ABB Switches Change-over and transfer switches
High performance levelIn change-over applications where the loaded switch may
need to be operated remotely, adequate durability has been
ensured by testing against the IEC 60947-6-1 standard in the
specification of endurance requirements.
Utilization categories:
– AC-31 for non-inductive or slightly inductive load
– AC-33 for motor loads or mixed loads including motors
ABB change-over switches are rated according to IEC
60947-6-1 standard
Easy installation for local or remote control
ABB change-over switches are very easy to install: the
manually operated switch is operated via a handle fixed
directly on the switch or on the panel door. The 16 to 125
Ampere sizes can be snapped on to a DIN rail and the front
fits in the 45 mm consumer unit cut-out.
The motorized change-over switches have snap-on control
wire connections. Auxiliary contacts can be snapped on to
the sides of the switches and the power terminals can be
connected in parallel with bridging bars.
The automatic transfer switches feature the automatic control
unit, which can be adjusted according to the mounting depth
of the panel. The voltage sensing kit is installed at the factory
thus reducing the expensive and time consuming installation
work.
Quick and easy installation
– savings in time and expenses

As industrial processes and IT applications diversify, a secure
power supply is increasingly important to cut production and
maintenance costs. In emergency situations, the system logic
of power distribution can become complex with mechanical
devices looking after making, breaking, conducting and isolating
power. Loads need to be transferred from one supply to another
— this will be the case when energy use is restricted or when
the supply source is overloaded.
Safe and reliable
ABB automatic transfer switches ensure service continuity
with a number of built-in, integrated safety features. The
change-over mechanism, for example, offers three stable
positions which ensure isolation of the two asynchronous
power supplies. This eliminates any risk of short-circuit
between them, even in the presence of transient voltages.
The automatic transfer switches are equipped with a handle
for manual operation in case of emergency.
Inbuilt safety
Compact design
The design of ABB change-over switches is advanced
and compact, allowing installation in confined spaces at
considerable savings. Compact double layer construction.
Minimizing the need for space
Data according to IEC 60947-3 Switch size
Rated insulation voltage and rated
operational voltage AC20/DC20 Pollution degree 3 V
Dielectric strength 50 Hz 1min. kV
Rated impulse withstand voltage kV
Rated thermal current and rated operational / ambient 40°C In open air A
current AC20/DC20 / ambient 40°C In enclosure A
/ ambient 60°C In enclosure A
..with minimum conductor cross section Cu mm2
Rated operational current, AC-21A up to 500 V A
690 V A
Rated operational current, AC-22A up to 500 V A
690 V A
Rated operational current, AC-23A up to 415 V A
440 V A
500 V A
690 V A
Rated operational current / poles in series, DC-21A up to 48 V1) A
110 V A
220 V A
440 V A
500 V A
Rated operational current / poles in series, DC-22A up to 48 V1) A
110 V A
220 V A
440 V A
Rated operational current / poles in series, DC-23A up to 48 V1) A
110 V A
220 V A
440 V A
Rated operational power, AC-23A2) 230 V kW
The kW-ratings are accurate for 3-phase 1500 400 V kW
R.P.M. standard asychronous motors 415 V kW
500 V kW
690 V kW
Rated breaking capacity in up to 415 V A
category AC-23 500 V A
690 V A
Rated conditional short-circuit current Ip (r.m.s.) and I
p (r.m.s.) 50 kA, 415 V î
c
(peak) kA
corresponding max. allowed cut-off current îc
(peak) Max. OFA_ fuse size gG/aM A/A
value. The cut-off current îc
refers to values listed by I
p (r.m.s.) 100 kA, 500 V î
c
(peak) kA
fuse manufacturers (single phase test acc. to IEC60269). Max. OFA_ fuse size gG/aM A
Rated short-time withstand current I
cw (r.m.s.) 690 V 1s kA
Rated short-time making capacity3) I
cm (peak) 690 V kA
Power loss / pole With rated current W
Mechanical endurance Number of oper. cycles4) Cycles
Mechanical endurance / switch Number of operations Oper.
Cable size Cu-wire size suitable for mm2
terminal clamps AWG
Terminal tightening torque Counter torque required Nm
Operating torque Typical for 3-pole switches Nm
Weight without accessories 3-pole switch kg
4-pole switch kg
Data according to UL508 (Listed)
Current A
Horsepower, 3-phase 200 V HP
208 V HP
240 V HP
480 V HP
600 V HP

Data according to IEC 60947-3 Switch size
Rated insulation voltage and rated operational voltage AC20/DC20 Pollution degree 3 V
Dielectric strength 50 Hz 1min. kV
Rated impulse withstand voltage kV
Rated thermal current and rated operational / ambient 40°C In open air A
current AC20/DC20 / ambient 40°C In enclosure A
/ ambient 60°C In enclosure A
..with minimum conductor cross section Cu mm2
Rated operational current, AC-21A up to 500 V A
690 V A
Rated operational current, AC-22A up to 500 V A
690 V A
Rated operational current, AC-23A up to 415 V A
500 V A
690 V A
Rated operational current / poles in series, DC-21A up to 48 V A
110 V A
220 V A
Rated operational current / poles in series, DC-22A up to 48 V A
110 V A
220 V A
Rated operational current / poles in series, DC-23A up to 48 V A
110 V A
220 V A
Rated operational power, AC-23A1) 230 V kW
The kW-ratings are accurate for 3-phase 1500 400 V kW
R.P.M. standard asychronous motors 415 V kW
500 V kW
690 V kW
Rated breaking capacity in up to 415 V A
category AC-23 500 V A
690 V A
Rated conditional short-circuit current Ip (r.m.s.) and corresponding max. I
p (r.m.s.) 50 kA, 415 V î
c
(peak) kA
allowed cut-off current îc
(peak) value. The cut-off current îc
refers to Max. OFA_ fuse size gG/aM A/A
values listed by fuse manufacturers (single phase test acc. to IEC60269). Ip (r.m.s.) 18 kA, 690 V î
c
(peak) kA
Max. OFA_ fuse size gG A
I
p (r.m.s.) 50 kA, 690 V î
c
(peak) kA
Max. OFA_ fuse size gG/aM A/A
Rated short-time withstand current I
cw (r.m.s.) 690 V 1s kA
Rated short-time making capacity2) Icm (peak) 690 V kA
Power loss / pole With rated current W
Mechanical endurance Number of oper. cycles3) Cycles
Mechanical endurance / switch Number of operations Oper.
Cable size Cu-wire size suitable mm2
for terminal clamps AWG
Terminal tightening torque Counter torque required Nm
Operating torque Typical for 3-pole switches Nm
Weight without accessories 3-pole switch kg
4-pole switch kg
Data according to IEC 60947-6-1
Class of equipment
Rated short-time withstand current Icw (r.m.s.) 690 V 0.1s kA
Conditional short-circuit current Icc (r.m.s.) 415 V kA
Corresponding fuse rating gG/aM fuse 415 V A
Rated operational current, AC-31B up to 415 V A
Rated operational current, AC-32B up to 415 V A
Rated operational current, AC-33B up to 415 V A
OTM630E_C
OTM1000E_C
OTM1600E_C
OTM2000E_C
OTM800E_C
OTM1250E_C
OTM2500E_C
OTM315E_C_D
OTM630E_C_D
OTM1000E_C_D
OTM1600E_C_D
OTM400E_C_D
OTM800E_C_D
OTM1250E_C_D