1SCC303002M0206 l ABB Installation and operating instructions, 34OTM_C rev. F l 3
A06102
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
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.
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
ODPS_: Dual power source, the type name, accessories
4l 1SCC303002M0206 l ABB Installation and operating instructions, 34OTM_C rev. F
2. Product overview
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.
1 Change-over switch
2 Motor operator
3 Switch panel, the operating mechanism
4 Handle for manual operation, double grip handle in sizes OTM1000-3200_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
1SCC303002M0206 l ABB Installation and operating instructions, 34OTM_C rev. F l 5
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;
remote control
To operate the motorized change-over switch electrically:
1. Remove the handle from the switch panel. You can remove the handle in all
positions (I, 0, II).
2. Turn the Motor/Manual selector to the Motor (M) position to enable electrical operation.
I
II
M
M
Man.
Man.
M
M
M
M
an.
an.
an.
M
M
M
Man.
A04122
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).
I
II
A04136
M
M
M
M
an.
an.
M
M
Man.
Man.
2
1
Figure 3.2 Locking electrical operation
6 l 1SCC303002M0206 l ABB Installation and operating instructions, 34OTM_C rev. F
3. Quick start
3.2 Operating the motorized change-over switch manually;
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).
I
II
M
M
1
2
Man.
Man.
CLICK !
A04123
M
M
Man.
Man.
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.
I
II
A04137
M
M
M
M
Man.
Man.
Man.
Man.
Figure 3.4 Locking the manual operation
1SCC303002M0206 l ABB Installation and operating instructions, 34OTM_C rev. F l 7
D
4. Installation
4. Installation
4.1 Mounting the motorized change-over switch
Use protection against direct contact.
OMD
I
A04126
M
M
M
M
an.
an.
Man.
Man.
M
M
Figure 4.1 An example of using protection against direct contact
8 l 1SCC303002M0206 l ABB Installation and operating instructions, 34OTM_C rev. F