Motorized change-over and transfer 
switches OTM_C 
Installation and operating instructions 
34OTM_C / 1SCC303002M0204
Manual400 a800a 1scc303002m0204
Contents Installation and operating instructions, OTM_C 
Contents 
1. Introduction........................................................................................................................ 4 
1.1 Use of symbols..............................................................................................................................4 
1.2 Explanations of abbreviations and terms......................................................................................4 
2. Product overview............................................................................................................... 5 
3. Quick start.......................................................................................................................... 6 
3.1 Operating the motorized change-over switch electrically; remote control....................................6 
3.1.1 Locking electrical operation..........................................................................................................6 
3.2 Operating the motorized change-over switch manually; local operation......................................7 
4. Installation.......................................................................................................................... 8 
4.1 Mounting the motorized change-over switch................................................................................8 
4.2 Dimensional drawings.................................................................................................................10 
4.3 Mounting positions......................................................................................................................17 
4.4 Labelling......................................................................................................................................17 
5. Connecting....................................................................................................................... 18 
5.1 Control circuit..............................................................................................................................18 
6. Operating.......................................................................................................................... 19 
6.1 Electrical operation......................................................................................................................19 
6.1.1 Impulse control............................................................................................................................20 
6.1.2 Continuous control......................................................................................................................21 
6.2 Manual operation by using the handle........................................................................................22 
6.3 Locking........................................................................................................................................23 
6.3.1 Locking the electrical operation..................................................................................................23 
6.3.2 Locking the manual operation.....................................................................................................23 
7. Technical data.................................................................................................................. 25 
8. Accessories...................................................................................................................... 27 
8.1 Terminal clamp sets.....................................................................................................................27 
8.2 Bridging bars...............................................................................................................................28 
8.3 Terminal shrouds..........................................................................................................................31 
8.4 Auxiliary contacts........................................................................................................................34 
8.5 Voltage sensing connectors........................................................................................................35 
8.6 Handle and spare fuse storage....................................................................................................36 
9. UL standard switches...................................................................................................... 37 
9.1 Phase barriers..............................................................................................................................38 
3 
1SCC303002M0204, rev. D
Installation and operating instructions, OTM_C 1. Introduction 
1. Introduction 
This manual describes the installation and the basic operation of the motorized change-over and transfer 
switches, types OTM_C. The instructive part is followed by a section on available accessories. 
1.1 Use of symbols 
1.2 Explanations of abbreviations and terms 
OTM_C: Motorized change-over switch, the type name 
OME_: Motor operator, the type name 
OT_C: Change-over switch, the type name 
OZXB_ and OZXA_: Terminal clamp sets, the type name, accessories 
OTZC_: Bridging bars, the type name, accessories 
OTS_: Terminal shrouds, the type name, accessories 
OA_: Auxiliary contacts, the type name, accessories 
4 
Hazardous voltage: warns about a situation where a hazardous voltage may cause 
physical injury to a person or damage to equipment. 
General warning: warns about a situation where something other than electrical 
equipment may cause physical injury to a person or damage to equipment. 
Caution: provides important information or warns about a situation that may 
have a detrimental effect on equipment. 
Information: provides important information about the equipment. 
1SCC303002M0204, rev. D
2. Product overview Installation and operating instructions, OTM_C 
2. Product overview 
Motorized change-over switches (type OTM_C) are suitable for remote control. You can operate the 
motorized change-over switches either electrically by using the motor operator or manually by using the 
handle. The operation, either electrical or manual, can be chosen by the selector switch “Motor/Manual” 
on the motor operator. Motorized change-over switches consist of the change-over switch and the motor 
operator. 
5 
Figure 2.1 Motorized change-over switch (type OTM_C) 
1 Change-over switch 
2 Motor operator 
3 Switch panel, the operating mechanism 
4 Handle for manual operation, double grip handle in sizes OTM1000-2500_C 
5 Motor/Manual selection 
6 Terminals for motor operator voltage supply 
7 Terminals for push-buttons 
8 Fuse (F1) of motor operator 
9 Locking latch for releasing the handle and locking electrical operation 
10 Locking clip for locking manual operation 
11 Terminals for locking state information 
12 Place for auxiliary contacts 
1SCC303002M0204, rev. D
Installation and operating instructions, OTM_C 3. Quick start 
3. Quick start 
This is a quick guide only meant for those who need a reminder of how to operate the unit. For more 
detailed instructions, see chapter 6. 
3.1 Operating the motorized change-over switch electrically; 
To operate the motorized change-over switch electrically: 
1. Remove the handle from the switch panel. You can remove the handle in all 
2. Turn the Motor/Manual selector to the Motor (M) position to enable electrical operation. 
Figure 3.1 Operating the motorized change-over switch electrically; remote control 
3.1.1 Locking electrical operation 
To disable electrical operation, lock the locking latch with a padlock. After the locking latch has been 
locked, the motorized change-over switch cannot be operated electrically. You can lock electrical 
operation in all positions (I, 0, II). 
Figure 3.2 Locking electrical operation 
6 
remote control 
positions (I, 0, II). 
1SCC303002M0204, rev. D
3. Quick start Installation and operating instructions, OTM_C 
7 
3.2 Operating the motorized change-over switch manually; 
1SCC303002M0204, rev. D 
local operation 
To operate the motorized change-over switch manually: 
1. Turn the Motor/Manual selector to the Manual (Man.) position to enable manual operation and to 
prevent electrical operation. 
2. Attach the handle to the switch panel. You can attach the handle in all positions 
(I, 0, II). 
Figure 3.3 Operating the motorized change-over switch manually 
To disable the manual (and at the same time also electrical) operation, lift up the locking clip to position 0 
and attach the padlock to the handle. 
Figure 3.4 Locking the manual operation
Installation and operating instructions, OTM_C 
4. Installation 
4.1 Mounting the motorized change-over switch 
Use protection against direct contact. 
Figure 4.1 An example of using protection against direct contact 
8 
1SCC303002M0204, rev. D 
4. Installation
Installation and operating instructions, OTM_C 
9 
Figure 4.2 Motorized change-over switches, drilling hole distances / screw-mounting, [mm/in] 
1SCC303002M0204, rev. D 
4. Installation
Installation and operating instructions, OTM160-2500_C 
4.2 Dimensional drawings 
mm 
Figure 4.3 OTM160-250E_C_M 
Figure 4.4 OTM160-250E_WC_M 
10 
1SCC303002M0204, rev. D 
4. Installation 
mm
Installation and operating instructions, OTM160-2500_C 
11 
1SCC303002M0204, rev. D 
4. Installation 
mm 
in 
Figure 4.5 OTM200U_C_M 
mm 
Figure 4.6 OTM315-400E_C_M
Installation and operating instructions, OTM160-2500_C 
mm 
Figure 4.7 OTM315-400E_WC_M 
Figure 4.8 OTM400U_C_M 
12 
1SCC303002M0204, rev. D 
4. Installation 
mm 
in
Installation and operating instructions, OTM160-2500_C 
13 
1SCC303002M0204, rev. D 
4. Installation 
mm 
Figure 4.9 OTM630-800E_C_M 
Figure 4.10 OTM600U_C_M
Installation and operating instructions, OTM160-2500_C 
mm 
Figure 4.11 OTM1000-1200E_C_M 
mm 
14 
1SCC303002M0204, rev. D 
4. Installation 
Figure 4.12 OTM1600E_C_M
4. Installation Installation and operating instructions, OTM160-2500_C 
15 
1SCC303002M0204, rev. D 
mm 
in 
Figure 4.13 OTM800-1200U_C_M 
mm 
Figure 4.14 OTM2000-2500E_C_M
Installation and operating instructions, OTM160-2500_C 
16 
1SCC303002M0204, rev. D 
4. Installation 
mm 
in 
Figure 4.15 OTM1600U_C_M
Installation and operating instructions, OTM_C 
4. Installation 
4.3 Mounting positions 
The recommended mounting positions for motorized change-over switches are horizontal, wall mounted 
or table mounted. 
17 
Figure 4.16 Mounting positions 
Do not install the motorized change-over switches in any other position than those 
described above. 
1SCC303002M0204, rev. D 
4.4 Labelling 
Figure 4.17 Labelling of the motorized change-over switches
Installation and operating instructions, OTM_C 
5. Connecting 
Only an authorised electrician may perform the electrical installation and maintenance 
of motorized change-over switches. Do not attempt any installation or maintenance 
actions when a motorized change-over switch is connected to the electrical mains. 
Before starting work, make sure that the change-over switch is de-energised. 
5.1 Control circuit 
Figure 5.1 Motorized change-over switch terminals 
1. Terminal for motor operator voltage supply 
2. Control terminal for push buttons or selector switch 
3. Terminal for state information of locking 
18 
Do not couple power for the control terminal. See the correct terminal for the power 
supply in Figure 5.1 
The control voltage (output C = 24Vdc) on the control terminal is non-isolated, see 
box 2 in Figure 5.1 
When relay outputs are used with inductive loads (such as relays, contactors and 
motors), they must be protected from voltage spikes using varistors, RC-protectors 
(AC current) or DC current diodes (DC current). 
1SCC303002M0204, rev. D 
5. Connecting
Installation and operating instructions, OTM_C 
19 
Never open any covers on the product. There may be dangerous external control 
voltages inside the motorized change-over switch even if the voltage is turned off. 
Never handle control cables when the voltage of the motorized change-over switch or 
external control circuits are connected. 
1SCC303002M0204, rev. D 
6. Operating 
Exercise sufficient caution when handling the unit. 
6.1 Electrical operation 
The motorized change-over switches are available for remote control. 
To operate the motorized change-over switch electrically: 
1. Release the handle from the switch panel by pressing down the locking latch under the 
switch panel and pulling the handle off, see Figure 6.1. 
Figure 6.1 Releasing the handle 
Electrical operation is disabled if the handle is attached to the switch panel. 
6. Operating
Installation and operating instructions, OTM_C 
2. Turn the Motor/Manual selection switch to the Motor (M) position, see Figure 6.2. 
Figure 6.2 Motor/Manual selection switch in the Motor (M) position 
3. Operate the motorized change-over switch with the push-buttons or selector switch via impulse 
control or continuous control. 
6.1.1 Impulse control 
When using impulse control, the change-over switch is operated by electric impulses. When you press 
the control button, the change-over switch is driven to the corresponding position (I, 0, II). The control 
impulse must last more than 100ms to take effect. A new command cannot be given until the change-over 
switch has reached the position of the previous command. Figure 6.3 shows the operation of the 
change-over switch with impulse control. 
Figure 6.3 Impulse control 
20 
The motor operator is protected from overloading by a fuse (F1) under the motor 
operator. Only use the same type of fuse that is described on the label close to the 
fuse. 
If a new command is given before the switch has reached the position of the 
previous command, the fuse (F1) may operate. 
1SCC303002M0204, rev. D 
6. Operating
Installation and operating instructions, OTM_C 
6.1.2 Continuous control 
When using continuous control, the control command is supplied to the switch continuously. When 
you press the control button, the change-over switch is driven to the corresponding position (I, 0, II). 
Operation of position 0 will over-run control of the other positions; that is, if you simultaneously give the 
0 command with another command, the change-over switch is driven to position 0. Figure 6.4 shows the 
operation of the change-over switch with continuous control. 
21 
The continuous control command can be given with push buttons, cam switches or 
with relays incorporated in PLC equipment or with other suitable contacts. 
1SCC303002M0204, rev. D 
6. Operating 
Figure 6.4 Continuous control
Installation and operating instructions, OTM_C 
Figure 6.6 Attaching the handle 
3. Operate the motorized change-over switch by turning the handle to the required position (I, 0, II). 
22 
Electrical operation is prevented when the handle is attached to the switch panel. 
1SCC303002M0204, rev. D 
6. Operating 
6.2 Manual operation by using the handle 
You can operate the motorized change-over switch manually by using the handle that is included in the 
delivery. 
To operate the motorized change-over switch manually: 
1. Turn the Motor/Manual selector to the Manual (Man.) position, see Figure 6.5. The motor operator is 
switched off and electrical operation is prevented. 
Figure 6.5 Motor/Manual selection in the Man. position 
2. Attach the handle by pressing it to the switch panel until it clicks into place. You can attach 
the handle in all positions (I, 0, II), see Figure 6.6.
Installation and operating instructions, OTM_C 
23 
6.3 Locking 
You can lock the motorized change-over switch to a specific position. 
6.3.1 Locking the electrical operation 
To disable electrical operation, lock the locking latch with a padlock. After the locking latch has been 
locked, the change-over switch cannot be operated electrically. You can lock the electrical operation in 
all positions (I, 0, II). 
To lock electrical operation: 
1. Pull up the locking latch under the change-over switch panel. 
2. Place the padlock under the latch, see Figure 6.7. 
1SCC303002M0204, rev. D 
6. Operating 
Figure 6.7 Locking the electrical operation 
The handle cannot be attached when electrical operation is locked. 
6.3.2 Locking the manual operation 
By default, manual operation can only be locked to position 0. Locking to position I and II is optional and 
possible only with modifications to the switch panel. 
To lock manual operation: 
1. Turn the handle to the required position. 
2. Pull out the clip from the handle and place the padlock on the handle; see Figure 6.8
Installation and operating instructions, OTM_C 6. Operating 
Figure 6.8 Locking the manual operation 
The handle cannot be removed when padlocked to position 0. 
The following chart shows the locking state information (the voltage on motor operator supply needed). 
Figure 6.9 Locking state information 
24 
1SCC303002M0204, rev. D
Installation and operating instructions, OTM_C 
25 
7. Technical data 
7. Technical data 
Motor operator, control circuit Value Cabling 
Rated operational voltage U [V] 220-240 Vac 50-60 Hz 
1SCC303002M0204, rev. D 
110-125 Vac/dc 50-60 Hz 
48 Vdc 
24 Vdc 
Operating voltage range 0.85... 1.1 x U 
Operating angle 90° 0-I, I-0, 0-II, II-0; 180° I-0-II 
Operating time See the Table 7.2 
Protection degree IP 20, front panel 
Rated impulse withstand voltage Uimp 4 kV 
Voltage supply PE N L 1,5 -2,5 mm2 
F2 Max. MCB 16 A 
Cable of the push-buttons (no SELV) C II I 0 1,5 -2,5 mm2 
Maximum cable length 100 m 
State information of locking (no SELV) 
Handle attached or motor operator locked 11-12-14 (C/O) 1,5 -2,5 mm2 
Locking motor operator 23-24 (NO) 1,5 -2,5 mm2 
Operating temperature -25... +55 °C 
Transportation and storage temperature -40... +70 °C 
Altitude Max. 2000 m 
Table 7.1 General technical data of motor operators
Installation and operating instructions, OTM_C 
a) Under nominal conditions 
Table 7.2 Specified technical data of motor operators 
Table 7.3 State information 
26 
1SCC303002M0204, rev. D 
7. Technical data 
Type Voltage 
Ue 
[V] 
Nominal 
current a) 
In 
[A] 
Current 
Inrush a) 
[A] 
Operating 
time a) 
I-0, 0-I, 
0-II, II-0 
[s] 
Operating 
transfer 
time a) 
I-II or II-I 
[s] 
OFF-time 
when 
operating 
a) 
I-II or II-I 
[s] 
OTM160...250_C 220-240 Vac 0,2 1,3 0,4 - 1,0 1,0 - 2,0 0,4 - 1,0 
OTM160...250_C 110-125 Vac/dc 0,45 2,1 0,5 - 1,2 1,1 - 2,5 0,5 - 1,1 
OTM160...250_C 48 Vdc 1,1 4,4 0,5 - 1,2 1,1 - 2,5 0,5 - 1,1 
OTM160...250_C 24 Vdc 3,3 16,8 0,5 - 1,0 1,0 - 2,0 0,4 - 1,0 
OTM315...400_C 220-240 Vac 0,5 2,1 0,4 - 1,0 0,9 - 2,0 0,4 - 1,0 
OTM315...400_C 110-125 Vac/dc 0,6 2,5 0,5 - 1,5 1,2 - 2,6 0,5 - 1,5 
OTM315...400_C 48 Vdc 2,1 8,3 0,4 - 1,0 1,0 - 2,0 0,4 - 1,0 
OTM315...400_C 24 Vdc 4,2 17,5 0,4 - 1,0 1,0 - 2,0 0,4 - 1,0 
OTM600…800_C 220-240 Vac 0,7 2,8 0,4 - 1,0 0,9 - 2,0 0,4 - 1,0 
OTM600…800_C 110-125 Vac/dc 0,8 4,6 0,6 - 1,5 1,2 - 3,0 0,6 - 1,5 
OTM600…800_C 48 Vdc 2,6 8,4 0,6 - 1,6 1,2 - 3,0 0,6 - 1,6 
OTM600…800_C 24 Vdc 4,0 22,4 0,5 - 1,5 1,1 - 2,5 0,5 - 1,5 
OTM1000…1600_C 220-240 Vac 1,8 7,7 0,5 - 1,5 1,5 - 3,0 0,5 - 1,5 
OTM1000…1600_C 110-125 Vac/dc 3,0 13,3 0,5 - 1,5 1,5 - 3,0 0,5 - 1,5 
OTM1000…1600_C 48 Vdc 5,3 22,4 0,5 - 1,5 1,5 - 3,0 0,5 - 1,5 
OTM1000…1600_C 24 Vdc 8,0 26,6 1,0 - 2,0 2,0 - 3,5 0,8 - 1,7 
OTM2000…2500_C 220-240 Vac 1,8 7,7 0,5 - 2,0 1,5 - 3,5 0,5 - 1,5 
OTM2000…2500_C 110-125 Vac/dc 3,0 13,3 0,5 - 2,0 1,5 - 3,5 0,5 - 1,5 
OTM2000…2500_C 48 Vdc 5,3 22,4 0,5 - 2,0 1,5 - 3,5 0,5 - 1,5 
OTM2000…2500_C 24 Vdc 8,0 26,6 1,0 - 2,0 2,0 - 3,5 0,8 - 1,7 
Measurement Value 
Handle attached or motor operator locked 11-12-14 (C/O): 5 A AC-1 / 250 V 
Locking motor operator 23-24 (NO): 5 A AC-1 / 250 V 
SCPD Max. MCB C2A
Installation and operating instructions, OTM_C 
27 
1SCC303002M0204, rev. D 
8. Accessories 
8. Accessories 
8.1 Terminal clamp sets 
Figure 8.1 Mounting of the terminal clamp sets, types OZXB_ and OZXA_
Installation and operating instructions, OTM_C 
8.2 Bridging bars 
28 
1SCC303002M0204, rev. D 
8. Accessories 
Figure 8.2 Mounting of the bridging bars (type OTZC_) to the motorized change-over switches 
OTM160-800E_C_
Installation and operating instructions, OTM_C 
29 
Figure 8.3 Mounting of the bridging bars (type OTZC_) to the motorized change-over switches 
1SCC303002M0204, rev. D 
OTM1000-1600E_C_ and OTM800-1200U_C_ 
8. Accessories
Installation and operating instructions, OTM_C 
Figure 8.4 Mounting of the bridging bars (type OTZC_) to the motorized change-over switches 
30 
OTM2000-2500E_C_ and OTM1600U_C_ 
1SCC303002M0204, rev. D 
8. Accessories
8. Accessories Installation and operating instructions, OTM_C 
31 
1SCC303002M0204, rev. D 
8.3 Terminal shrouds 
Figure 8.5 Mounting of the terminal shrouds (type OTS_ ) to the motorized change-over switches 
OTM160-800E_C_
Installation and operating instructions, OTM_C 
Figure 8.6 Mounting of the terminal shrouds (type OTS_ ) to the motorized change-over switches 
32 
OTM1000-1600E_C_ and OTM800-1200U_C_ 
1SCC303002M0204, rev. D 
8. Accessories
Installation and operating instructions, OTM_C 
33 
Figure 8.7 Mounting of the terminal shrouds (type OTS_ ) to the motorized change-over switches 
1SCC303002M0204, rev. D 
OTM2000-2500_C_ and OTM1600U_C_ 
8. Accessories
Installation and operating instructions, OTM_C 8. Accessories 
8.4 Auxiliary contacts 
Figure 8.8 Mounting of the auxiliary contacts, type OA_ 
34 
1SCC303002M0204, rev. D
8. Accessories Installation and operating instructions, OTM_C 
35 
1SCC303002M0204, rev. D 
8.5 Voltage sensing connectors 
Figure 8.9 Mounting of the voltage sensing connectors, type OMZB_
Installation and operating instructions, OTM_C 8. Accessories 
8.6 Handle and spare fuse storage 
Figure 8.10 Handle and spare fuses can be stored on the motorized change-over switch by mounting 
36 
the accessory OTVS_ . 
1SCC303002M0204, rev. D
Installation and operating instructions, OTM_C 
9. UL standard switches 
Current Height Width Depth 
OTM200U_C 406 mm/16 in 305 mm/12 in 203 mm/8 in 
OTM400U_C 610 mm/24 in 356 mm/14 in 254 mm/10 in 
OTM600U_C 610 mm/24 in 700 mm/28 in 400 mm/16 in 
OTM800-1200U_C 1220 mm/48 in 610 mm/24 in 400 mm/16 in 
OTM1600U_C 1200 mm/47 in 750 mm/30 in 400 mm/16 in 
A B D 
OTM200-1600U_C 0 13 mm/0,5 in 13 mm/0,5 in 
AWG C MCM C 
2 100 mm/4 in 250 250 mm/8 in 
1 100 mm/4 in 300 250 mm/10 in 
1/0 125 mm/5 in 350 350 mm/12 in 
2/0 150 mm/6 in 
3/0-4/0 175 mm/7 in 
37 
OTM400U_C 
Cable size Cable size 
1SCC303002M0204, rev. D 
9. UL standard switches 
OTM200U_C 
Cable size Cable size 
AWG C MCM C 
4-3 100 mm/4 in 250 200 mm/8 in 
2 100 mm/4 in 300 250 mm/10 in 
1 100 mm/4 in 
1/0 125 mm/5 in 
2/0 150 mm/6 in 
3/0-4/0 175 mm/7 in 
OTM600-1200U_C 
Cable size Cable size 
AWG C MCM C 
2 100 mm/4 in 250 200 mm/8 in 
1 100 mm/4 in 300 250 mm/10 in 
1/0 125 mm/5 in 350 300 mm/12 in 
2/0 150 mm/6 in 400 330 mm/13 in 
3/0-4/0 175 mm/7 in 500 356 mm/14 in 
600 381 mm/15 in 
OTM1600U_C 
Cable size 
MCM C 
250 200 mm/8 in 
300 250 mm/10 in 
350 300 mm/12 in 
400 330 mm/13 in 
500 356 mm/14 in 
600 381 mm/15 in 
Figure 9.1 Clearances per UL 98, minimum enclosure size or equivalent volume
Installation and operating instructions, OTM_C 
9.1 Phase barriers 
Phase barriers or shrouds (see section 8.3) must be used to maintain a clearance of 1 inch on the 
motorized change-over switch types: OTM600U_C_, if the conductors are wider than 39 mm /1,54 in 
(phase barrier 68838), on OTM800-1200U_C_, if the lugs are wider than 54 mm /2,13 in (phase barrier 
68912) and on OTM1600U_C_, if the lugs are wider than 100 mm / 3,94 in (phase barrier 68912). 
Phase barriers 68912 must be used on motorized change-over switches types OTM1000-2500_C_ if the 
voltage is > 415 V. 
The types for the package of 6 barriers are: 68838 = OTB800/6C and 68912 = OTB1600/6C . 
Figure 9.2 OTM600U_C, OTM800-1600U_C_ and OTM1000-2500E_C_ mounting of phase barriers 
38 
1SCC303002M0204, rev. D 
9. UL standard switches
Manual400 a800a 1scc303002m0204
Printed by: Waasa Graphics Oy, Vaasa Finland 
Producted by: GRAFIMER, Vaasa Finland 
ABB Oy The technical data and dimensions are valid 
Low Voltage Switches 
P.O Box 622 
FI-65101 VAASA, Finland 
Telephone +358 10 22 11 
Telefax +358 10 22 45708 
www.abb.com 
at the time of printing. We reserve the right to 
subsequent alterations.

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Manual400 a800a 1scc303002m0204

  • 1. Motorized change-over and transfer switches OTM_C Installation and operating instructions 34OTM_C / 1SCC303002M0204
  • 3. Contents Installation and operating instructions, OTM_C Contents 1. Introduction........................................................................................................................ 4 1.1 Use of symbols..............................................................................................................................4 1.2 Explanations of abbreviations and terms......................................................................................4 2. Product overview............................................................................................................... 5 3. Quick start.......................................................................................................................... 6 3.1 Operating the motorized change-over switch electrically; remote control....................................6 3.1.1 Locking electrical operation..........................................................................................................6 3.2 Operating the motorized change-over switch manually; local operation......................................7 4. Installation.......................................................................................................................... 8 4.1 Mounting the motorized change-over switch................................................................................8 4.2 Dimensional drawings.................................................................................................................10 4.3 Mounting positions......................................................................................................................17 4.4 Labelling......................................................................................................................................17 5. Connecting....................................................................................................................... 18 5.1 Control circuit..............................................................................................................................18 6. Operating.......................................................................................................................... 19 6.1 Electrical operation......................................................................................................................19 6.1.1 Impulse control............................................................................................................................20 6.1.2 Continuous control......................................................................................................................21 6.2 Manual operation by using the handle........................................................................................22 6.3 Locking........................................................................................................................................23 6.3.1 Locking the electrical operation..................................................................................................23 6.3.2 Locking the manual operation.....................................................................................................23 7. Technical data.................................................................................................................. 25 8. Accessories...................................................................................................................... 27 8.1 Terminal clamp sets.....................................................................................................................27 8.2 Bridging bars...............................................................................................................................28 8.3 Terminal shrouds..........................................................................................................................31 8.4 Auxiliary contacts........................................................................................................................34 8.5 Voltage sensing connectors........................................................................................................35 8.6 Handle and spare fuse storage....................................................................................................36 9. UL standard switches...................................................................................................... 37 9.1 Phase barriers..............................................................................................................................38 3 1SCC303002M0204, rev. D
  • 4. Installation and operating instructions, OTM_C 1. Introduction 1. Introduction This manual describes the installation and the basic operation of the motorized change-over and transfer switches, types OTM_C. The instructive part is followed by a section on available accessories. 1.1 Use of symbols 1.2 Explanations of abbreviations and terms OTM_C: Motorized change-over switch, the type name OME_: Motor operator, the type name OT_C: Change-over switch, the type name OZXB_ and OZXA_: Terminal clamp sets, the type name, accessories OTZC_: Bridging bars, the type name, accessories OTS_: Terminal shrouds, the type name, accessories OA_: Auxiliary contacts, the type name, accessories 4 Hazardous voltage: warns about a situation where a hazardous voltage may cause physical injury to a person or damage to equipment. General warning: warns about a situation where something other than electrical equipment may cause physical injury to a person or damage to equipment. Caution: provides important information or warns about a situation that may have a detrimental effect on equipment. Information: provides important information about the equipment. 1SCC303002M0204, rev. D
  • 5. 2. Product overview Installation and operating instructions, OTM_C 2. Product overview Motorized change-over switches (type OTM_C) are suitable for remote control. You can operate the motorized change-over switches either electrically by using the motor operator or manually by using the handle. The operation, either electrical or manual, can be chosen by the selector switch “Motor/Manual” on the motor operator. Motorized change-over switches consist of the change-over switch and the motor operator. 5 Figure 2.1 Motorized change-over switch (type OTM_C) 1 Change-over switch 2 Motor operator 3 Switch panel, the operating mechanism 4 Handle for manual operation, double grip handle in sizes OTM1000-2500_C 5 Motor/Manual selection 6 Terminals for motor operator voltage supply 7 Terminals for push-buttons 8 Fuse (F1) of motor operator 9 Locking latch for releasing the handle and locking electrical operation 10 Locking clip for locking manual operation 11 Terminals for locking state information 12 Place for auxiliary contacts 1SCC303002M0204, rev. D
  • 6. Installation and operating instructions, OTM_C 3. Quick start 3. Quick start This is a quick guide only meant for those who need a reminder of how to operate the unit. For more detailed instructions, see chapter 6. 3.1 Operating the motorized change-over switch electrically; To operate the motorized change-over switch electrically: 1. Remove the handle from the switch panel. You can remove the handle in all 2. Turn the Motor/Manual selector to the Motor (M) position to enable electrical operation. Figure 3.1 Operating the motorized change-over switch electrically; remote control 3.1.1 Locking electrical operation To disable electrical operation, lock the locking latch with a padlock. After the locking latch has been locked, the motorized change-over switch cannot be operated electrically. You can lock electrical operation in all positions (I, 0, II). Figure 3.2 Locking electrical operation 6 remote control positions (I, 0, II). 1SCC303002M0204, rev. D
  • 7. 3. Quick start Installation and operating instructions, OTM_C 7 3.2 Operating the motorized change-over switch manually; 1SCC303002M0204, rev. D local operation To operate the motorized change-over switch manually: 1. Turn the Motor/Manual selector to the Manual (Man.) position to enable manual operation and to prevent electrical operation. 2. Attach the handle to the switch panel. You can attach the handle in all positions (I, 0, II). Figure 3.3 Operating the motorized change-over switch manually To disable the manual (and at the same time also electrical) operation, lift up the locking clip to position 0 and attach the padlock to the handle. Figure 3.4 Locking the manual operation
  • 8. Installation and operating instructions, OTM_C 4. Installation 4.1 Mounting the motorized change-over switch Use protection against direct contact. Figure 4.1 An example of using protection against direct contact 8 1SCC303002M0204, rev. D 4. Installation
  • 9. Installation and operating instructions, OTM_C 9 Figure 4.2 Motorized change-over switches, drilling hole distances / screw-mounting, [mm/in] 1SCC303002M0204, rev. D 4. Installation
  • 10. Installation and operating instructions, OTM160-2500_C 4.2 Dimensional drawings mm Figure 4.3 OTM160-250E_C_M Figure 4.4 OTM160-250E_WC_M 10 1SCC303002M0204, rev. D 4. Installation mm
  • 11. Installation and operating instructions, OTM160-2500_C 11 1SCC303002M0204, rev. D 4. Installation mm in Figure 4.5 OTM200U_C_M mm Figure 4.6 OTM315-400E_C_M
  • 12. Installation and operating instructions, OTM160-2500_C mm Figure 4.7 OTM315-400E_WC_M Figure 4.8 OTM400U_C_M 12 1SCC303002M0204, rev. D 4. Installation mm in
  • 13. Installation and operating instructions, OTM160-2500_C 13 1SCC303002M0204, rev. D 4. Installation mm Figure 4.9 OTM630-800E_C_M Figure 4.10 OTM600U_C_M
  • 14. Installation and operating instructions, OTM160-2500_C mm Figure 4.11 OTM1000-1200E_C_M mm 14 1SCC303002M0204, rev. D 4. Installation Figure 4.12 OTM1600E_C_M
  • 15. 4. Installation Installation and operating instructions, OTM160-2500_C 15 1SCC303002M0204, rev. D mm in Figure 4.13 OTM800-1200U_C_M mm Figure 4.14 OTM2000-2500E_C_M
  • 16. Installation and operating instructions, OTM160-2500_C 16 1SCC303002M0204, rev. D 4. Installation mm in Figure 4.15 OTM1600U_C_M
  • 17. Installation and operating instructions, OTM_C 4. Installation 4.3 Mounting positions The recommended mounting positions for motorized change-over switches are horizontal, wall mounted or table mounted. 17 Figure 4.16 Mounting positions Do not install the motorized change-over switches in any other position than those described above. 1SCC303002M0204, rev. D 4.4 Labelling Figure 4.17 Labelling of the motorized change-over switches
  • 18. Installation and operating instructions, OTM_C 5. Connecting Only an authorised electrician may perform the electrical installation and maintenance of motorized change-over switches. Do not attempt any installation or maintenance actions when a motorized change-over switch is connected to the electrical mains. Before starting work, make sure that the change-over switch is de-energised. 5.1 Control circuit Figure 5.1 Motorized change-over switch terminals 1. Terminal for motor operator voltage supply 2. Control terminal for push buttons or selector switch 3. Terminal for state information of locking 18 Do not couple power for the control terminal. See the correct terminal for the power supply in Figure 5.1 The control voltage (output C = 24Vdc) on the control terminal is non-isolated, see box 2 in Figure 5.1 When relay outputs are used with inductive loads (such as relays, contactors and motors), they must be protected from voltage spikes using varistors, RC-protectors (AC current) or DC current diodes (DC current). 1SCC303002M0204, rev. D 5. Connecting
  • 19. Installation and operating instructions, OTM_C 19 Never open any covers on the product. There may be dangerous external control voltages inside the motorized change-over switch even if the voltage is turned off. Never handle control cables when the voltage of the motorized change-over switch or external control circuits are connected. 1SCC303002M0204, rev. D 6. Operating Exercise sufficient caution when handling the unit. 6.1 Electrical operation The motorized change-over switches are available for remote control. To operate the motorized change-over switch electrically: 1. Release the handle from the switch panel by pressing down the locking latch under the switch panel and pulling the handle off, see Figure 6.1. Figure 6.1 Releasing the handle Electrical operation is disabled if the handle is attached to the switch panel. 6. Operating
  • 20. Installation and operating instructions, OTM_C 2. Turn the Motor/Manual selection switch to the Motor (M) position, see Figure 6.2. Figure 6.2 Motor/Manual selection switch in the Motor (M) position 3. Operate the motorized change-over switch with the push-buttons or selector switch via impulse control or continuous control. 6.1.1 Impulse control When using impulse control, the change-over switch is operated by electric impulses. When you press the control button, the change-over switch is driven to the corresponding position (I, 0, II). The control impulse must last more than 100ms to take effect. A new command cannot be given until the change-over switch has reached the position of the previous command. Figure 6.3 shows the operation of the change-over switch with impulse control. Figure 6.3 Impulse control 20 The motor operator is protected from overloading by a fuse (F1) under the motor operator. Only use the same type of fuse that is described on the label close to the fuse. If a new command is given before the switch has reached the position of the previous command, the fuse (F1) may operate. 1SCC303002M0204, rev. D 6. Operating
  • 21. Installation and operating instructions, OTM_C 6.1.2 Continuous control When using continuous control, the control command is supplied to the switch continuously. When you press the control button, the change-over switch is driven to the corresponding position (I, 0, II). Operation of position 0 will over-run control of the other positions; that is, if you simultaneously give the 0 command with another command, the change-over switch is driven to position 0. Figure 6.4 shows the operation of the change-over switch with continuous control. 21 The continuous control command can be given with push buttons, cam switches or with relays incorporated in PLC equipment or with other suitable contacts. 1SCC303002M0204, rev. D 6. Operating Figure 6.4 Continuous control
  • 22. Installation and operating instructions, OTM_C Figure 6.6 Attaching the handle 3. Operate the motorized change-over switch by turning the handle to the required position (I, 0, II). 22 Electrical operation is prevented when the handle is attached to the switch panel. 1SCC303002M0204, rev. D 6. Operating 6.2 Manual operation by using the handle You can operate the motorized change-over switch manually by using the handle that is included in the delivery. To operate the motorized change-over switch manually: 1. Turn the Motor/Manual selector to the Manual (Man.) position, see Figure 6.5. The motor operator is switched off and electrical operation is prevented. Figure 6.5 Motor/Manual selection in the Man. position 2. Attach the handle by pressing it to the switch panel until it clicks into place. You can attach the handle in all positions (I, 0, II), see Figure 6.6.
  • 23. Installation and operating instructions, OTM_C 23 6.3 Locking You can lock the motorized change-over switch to a specific position. 6.3.1 Locking the electrical operation To disable electrical operation, lock the locking latch with a padlock. After the locking latch has been locked, the change-over switch cannot be operated electrically. You can lock the electrical operation in all positions (I, 0, II). To lock electrical operation: 1. Pull up the locking latch under the change-over switch panel. 2. Place the padlock under the latch, see Figure 6.7. 1SCC303002M0204, rev. D 6. Operating Figure 6.7 Locking the electrical operation The handle cannot be attached when electrical operation is locked. 6.3.2 Locking the manual operation By default, manual operation can only be locked to position 0. Locking to position I and II is optional and possible only with modifications to the switch panel. To lock manual operation: 1. Turn the handle to the required position. 2. Pull out the clip from the handle and place the padlock on the handle; see Figure 6.8
  • 24. Installation and operating instructions, OTM_C 6. Operating Figure 6.8 Locking the manual operation The handle cannot be removed when padlocked to position 0. The following chart shows the locking state information (the voltage on motor operator supply needed). Figure 6.9 Locking state information 24 1SCC303002M0204, rev. D
  • 25. Installation and operating instructions, OTM_C 25 7. Technical data 7. Technical data Motor operator, control circuit Value Cabling Rated operational voltage U [V] 220-240 Vac 50-60 Hz 1SCC303002M0204, rev. D 110-125 Vac/dc 50-60 Hz 48 Vdc 24 Vdc Operating voltage range 0.85... 1.1 x U Operating angle 90° 0-I, I-0, 0-II, II-0; 180° I-0-II Operating time See the Table 7.2 Protection degree IP 20, front panel Rated impulse withstand voltage Uimp 4 kV Voltage supply PE N L 1,5 -2,5 mm2 F2 Max. MCB 16 A Cable of the push-buttons (no SELV) C II I 0 1,5 -2,5 mm2 Maximum cable length 100 m State information of locking (no SELV) Handle attached or motor operator locked 11-12-14 (C/O) 1,5 -2,5 mm2 Locking motor operator 23-24 (NO) 1,5 -2,5 mm2 Operating temperature -25... +55 °C Transportation and storage temperature -40... +70 °C Altitude Max. 2000 m Table 7.1 General technical data of motor operators
  • 26. Installation and operating instructions, OTM_C a) Under nominal conditions Table 7.2 Specified technical data of motor operators Table 7.3 State information 26 1SCC303002M0204, rev. D 7. Technical data Type Voltage Ue [V] Nominal current a) In [A] Current Inrush a) [A] Operating time a) I-0, 0-I, 0-II, II-0 [s] Operating transfer time a) I-II or II-I [s] OFF-time when operating a) I-II or II-I [s] OTM160...250_C 220-240 Vac 0,2 1,3 0,4 - 1,0 1,0 - 2,0 0,4 - 1,0 OTM160...250_C 110-125 Vac/dc 0,45 2,1 0,5 - 1,2 1,1 - 2,5 0,5 - 1,1 OTM160...250_C 48 Vdc 1,1 4,4 0,5 - 1,2 1,1 - 2,5 0,5 - 1,1 OTM160...250_C 24 Vdc 3,3 16,8 0,5 - 1,0 1,0 - 2,0 0,4 - 1,0 OTM315...400_C 220-240 Vac 0,5 2,1 0,4 - 1,0 0,9 - 2,0 0,4 - 1,0 OTM315...400_C 110-125 Vac/dc 0,6 2,5 0,5 - 1,5 1,2 - 2,6 0,5 - 1,5 OTM315...400_C 48 Vdc 2,1 8,3 0,4 - 1,0 1,0 - 2,0 0,4 - 1,0 OTM315...400_C 24 Vdc 4,2 17,5 0,4 - 1,0 1,0 - 2,0 0,4 - 1,0 OTM600…800_C 220-240 Vac 0,7 2,8 0,4 - 1,0 0,9 - 2,0 0,4 - 1,0 OTM600…800_C 110-125 Vac/dc 0,8 4,6 0,6 - 1,5 1,2 - 3,0 0,6 - 1,5 OTM600…800_C 48 Vdc 2,6 8,4 0,6 - 1,6 1,2 - 3,0 0,6 - 1,6 OTM600…800_C 24 Vdc 4,0 22,4 0,5 - 1,5 1,1 - 2,5 0,5 - 1,5 OTM1000…1600_C 220-240 Vac 1,8 7,7 0,5 - 1,5 1,5 - 3,0 0,5 - 1,5 OTM1000…1600_C 110-125 Vac/dc 3,0 13,3 0,5 - 1,5 1,5 - 3,0 0,5 - 1,5 OTM1000…1600_C 48 Vdc 5,3 22,4 0,5 - 1,5 1,5 - 3,0 0,5 - 1,5 OTM1000…1600_C 24 Vdc 8,0 26,6 1,0 - 2,0 2,0 - 3,5 0,8 - 1,7 OTM2000…2500_C 220-240 Vac 1,8 7,7 0,5 - 2,0 1,5 - 3,5 0,5 - 1,5 OTM2000…2500_C 110-125 Vac/dc 3,0 13,3 0,5 - 2,0 1,5 - 3,5 0,5 - 1,5 OTM2000…2500_C 48 Vdc 5,3 22,4 0,5 - 2,0 1,5 - 3,5 0,5 - 1,5 OTM2000…2500_C 24 Vdc 8,0 26,6 1,0 - 2,0 2,0 - 3,5 0,8 - 1,7 Measurement Value Handle attached or motor operator locked 11-12-14 (C/O): 5 A AC-1 / 250 V Locking motor operator 23-24 (NO): 5 A AC-1 / 250 V SCPD Max. MCB C2A
  • 27. Installation and operating instructions, OTM_C 27 1SCC303002M0204, rev. D 8. Accessories 8. Accessories 8.1 Terminal clamp sets Figure 8.1 Mounting of the terminal clamp sets, types OZXB_ and OZXA_
  • 28. Installation and operating instructions, OTM_C 8.2 Bridging bars 28 1SCC303002M0204, rev. D 8. Accessories Figure 8.2 Mounting of the bridging bars (type OTZC_) to the motorized change-over switches OTM160-800E_C_
  • 29. Installation and operating instructions, OTM_C 29 Figure 8.3 Mounting of the bridging bars (type OTZC_) to the motorized change-over switches 1SCC303002M0204, rev. D OTM1000-1600E_C_ and OTM800-1200U_C_ 8. Accessories
  • 30. Installation and operating instructions, OTM_C Figure 8.4 Mounting of the bridging bars (type OTZC_) to the motorized change-over switches 30 OTM2000-2500E_C_ and OTM1600U_C_ 1SCC303002M0204, rev. D 8. Accessories
  • 31. 8. Accessories Installation and operating instructions, OTM_C 31 1SCC303002M0204, rev. D 8.3 Terminal shrouds Figure 8.5 Mounting of the terminal shrouds (type OTS_ ) to the motorized change-over switches OTM160-800E_C_
  • 32. Installation and operating instructions, OTM_C Figure 8.6 Mounting of the terminal shrouds (type OTS_ ) to the motorized change-over switches 32 OTM1000-1600E_C_ and OTM800-1200U_C_ 1SCC303002M0204, rev. D 8. Accessories
  • 33. Installation and operating instructions, OTM_C 33 Figure 8.7 Mounting of the terminal shrouds (type OTS_ ) to the motorized change-over switches 1SCC303002M0204, rev. D OTM2000-2500_C_ and OTM1600U_C_ 8. Accessories
  • 34. Installation and operating instructions, OTM_C 8. Accessories 8.4 Auxiliary contacts Figure 8.8 Mounting of the auxiliary contacts, type OA_ 34 1SCC303002M0204, rev. D
  • 35. 8. Accessories Installation and operating instructions, OTM_C 35 1SCC303002M0204, rev. D 8.5 Voltage sensing connectors Figure 8.9 Mounting of the voltage sensing connectors, type OMZB_
  • 36. Installation and operating instructions, OTM_C 8. Accessories 8.6 Handle and spare fuse storage Figure 8.10 Handle and spare fuses can be stored on the motorized change-over switch by mounting 36 the accessory OTVS_ . 1SCC303002M0204, rev. D
  • 37. Installation and operating instructions, OTM_C 9. UL standard switches Current Height Width Depth OTM200U_C 406 mm/16 in 305 mm/12 in 203 mm/8 in OTM400U_C 610 mm/24 in 356 mm/14 in 254 mm/10 in OTM600U_C 610 mm/24 in 700 mm/28 in 400 mm/16 in OTM800-1200U_C 1220 mm/48 in 610 mm/24 in 400 mm/16 in OTM1600U_C 1200 mm/47 in 750 mm/30 in 400 mm/16 in A B D OTM200-1600U_C 0 13 mm/0,5 in 13 mm/0,5 in AWG C MCM C 2 100 mm/4 in 250 250 mm/8 in 1 100 mm/4 in 300 250 mm/10 in 1/0 125 mm/5 in 350 350 mm/12 in 2/0 150 mm/6 in 3/0-4/0 175 mm/7 in 37 OTM400U_C Cable size Cable size 1SCC303002M0204, rev. D 9. UL standard switches OTM200U_C Cable size Cable size AWG C MCM C 4-3 100 mm/4 in 250 200 mm/8 in 2 100 mm/4 in 300 250 mm/10 in 1 100 mm/4 in 1/0 125 mm/5 in 2/0 150 mm/6 in 3/0-4/0 175 mm/7 in OTM600-1200U_C Cable size Cable size AWG C MCM C 2 100 mm/4 in 250 200 mm/8 in 1 100 mm/4 in 300 250 mm/10 in 1/0 125 mm/5 in 350 300 mm/12 in 2/0 150 mm/6 in 400 330 mm/13 in 3/0-4/0 175 mm/7 in 500 356 mm/14 in 600 381 mm/15 in OTM1600U_C Cable size MCM C 250 200 mm/8 in 300 250 mm/10 in 350 300 mm/12 in 400 330 mm/13 in 500 356 mm/14 in 600 381 mm/15 in Figure 9.1 Clearances per UL 98, minimum enclosure size or equivalent volume
  • 38. Installation and operating instructions, OTM_C 9.1 Phase barriers Phase barriers or shrouds (see section 8.3) must be used to maintain a clearance of 1 inch on the motorized change-over switch types: OTM600U_C_, if the conductors are wider than 39 mm /1,54 in (phase barrier 68838), on OTM800-1200U_C_, if the lugs are wider than 54 mm /2,13 in (phase barrier 68912) and on OTM1600U_C_, if the lugs are wider than 100 mm / 3,94 in (phase barrier 68912). Phase barriers 68912 must be used on motorized change-over switches types OTM1000-2500_C_ if the voltage is > 415 V. The types for the package of 6 barriers are: 68838 = OTB800/6C and 68912 = OTB1600/6C . Figure 9.2 OTM600U_C, OTM800-1600U_C_ and OTM1000-2500E_C_ mounting of phase barriers 38 1SCC303002M0204, rev. D 9. UL standard switches
  • 40. Printed by: Waasa Graphics Oy, Vaasa Finland Producted by: GRAFIMER, Vaasa Finland ABB Oy The technical data and dimensions are valid Low Voltage Switches P.O Box 622 FI-65101 VAASA, Finland Telephone +358 10 22 11 Telefax +358 10 22 45708 www.abb.com at the time of printing. We reserve the right to subsequent alterations.