The circuit breaker for transformer protection MS132-12T is a compact 45 mm width device designed to protect control transformers on the primary side. This device has a rated operational current of Ie = 12 A. It allows fuse-less protection against overload and short-circuit. The short-circuit current setting is fixed to 20 times the rated operational current to handle the high inrush current generated by transformers. The device allows manually connect and disconnect the transformer from the mains thanks of its built-in disconnection function. The circuit breaker for transformer protection offers a rated service short-circuit breaking capacity of Ics = 100 kA at 400 VAC and a trip class 10. Further features are temperature compensation, trip-free mechanism, rotary handle with a clear switch position indication and short circuit trip indicator. The handle is lockable to protect against unauthorized changes. Auxiliary contacts, signalling contacts, undervoltage releases, shunt trips, power in-feed blocks and terminal spacers are available as accessory.
Cutting and Protection Devices
MS132-12T Circuit Breaker for Primary Transformer Protection 8.0 ... 12 A
Nortécnica Ref:
EAN:
4013614485015
Description
Technical Information
Attributes
Número de contatos auxiliares como contato normalmente aberto
0
Número de contatos auxiliares como contato normalmente fechado
0
Corrente permanente nominal Iu
12
With integrated under voltage release
-
Number of poles
3
Overload release current setting
8.0
12
Número de contatos auxiliares como contato de comutação
0
Rated voltage
690
690
Potência dissipada
6.0
Degree of protection IP
IP20
Position of connection for main current circuit
Front side
Motor drive integrated
No
Type of electrical connection of main circuit
Screw connection
Type of control element
Turn button
With switched-off indicator
Yes
Corrente nominal de comutação de curto-circuito Icu a 400 V, 50 Hz
100
Adjustment range short-term delayed short-circuit release
-
-
Adjustment range undelayed short-circuit release
240
240
Suitable for DIN rail top hat rail mounting
Yes
Integrated earth fault protection
No
Motor drive optional
No
Device construction
Complete device in housing
DIN rail top hat rail mounting optional
Yes
Complete device with protection unit
Yes
Brands
ABB
Long Description
The circuit breaker for transformer protection MS132-12T is a compact 45 mm width device designed to protect control transformers on the primary side. This device has a rated operational current of Ie = 12 A. It allows fuse-less protection against overload and short-circuit. The short-circuit current setting is fixed to 20 times the rated operational current to handle the high inrush current generated by transformers. The device allows manually connect and disconnect the transformer from the mains thanks of its built-in disconnection function. The circuit breaker for transformer protection offers a rated service short-circuit breaking capacity of Ics = 100 kA at 400 VAC and a trip class 10. Further features are temperature compensation, trip-free mechanism, rotary handle with a clear switch position indication and short circuit trip indicator. The handle is lockable to protect against unauthorized changes. Auxiliary contacts, signalling contacts, undervoltage releases, shunt trips, power in-feed blocks and terminal spacers are available as accessory.