Molded Case Circuit Breaker MCCB AM1 CM1 Model

It is supplied with rated insulating voltage 550 and 800V and used for circuit of AC 50/60Hz, rated operating voltage AC 400V (or below), rated operating current up to 1600A for infrequent changing over and starting of the motors. The products conforms to IEC60947-2 standard.

Main Technical Specification(table1)

Molded Case Circuit Breakers MCCB ABB Specification 001 Molded Case Circuit Breakers MCCB ABB Specification 002

Note: 6A without thermal protection
The N-pole of four-poles breaker is sited at the right side of the product has four types:
Type A: Without current trip-lease on N pole which making all the time, not closing and opening with the other three poles.
Type B: Without current trip-release on N pole which closing and opening with the other poles.
Type C: With current trip-release which closing and opening with the other three poles.
Type D: With current trip-release which making all the time not closing and opening with the other three poles.

Protection Characteristic

The thermodynamic release of a circuit breaker provides the feature of inverse time-delay, while the magnetic release is the instantaneous operation as shown on table 2(distribution circuit breaker) and table 3 (motor protection circuit breaker).

Molded Case Circuit Breakers MCCB ABB Specification 003

Accessories of Circuit breaker

The external accessories of the breaker
Motor-driven operation device
1) Wiring diagram of type CDM electromagnetic operation device(fitting AM1-63,100,225) seethe following drawing (wiring diagram of the external accessories of the breaker in the dotted frame)

Molded Case Circuit Breakers MCCB ABB Specification 004

Code description: SB1 SB2 stand for push button. (provided by users themselves) “X” stands for line connection terminals
Voltage rating: AC50Hz 230V 400V DC 220V

Rotary handle operation device
The mechanism is used in moulded case circuit breaker to operate the draw-out panel. Powerdistribution panel and supply box outside the panel by turning the handle ,and to ensure thedoor of panel would not be openned when the breaker being on. The hand-drive mechanism can be equiped with two types of operation, one is “A” modelsquare handle , the other is “B” model round handle.

Molded Case Circuit Breakers MCCB ABB Specification 005

Release pattern and accessories code

Molded Case Circuit Breakers MCCB ABB Specification 006

SHT: Shunt release; UVR: Under-voltage release;AX: Auxiliary contact; AL: Alarm contact

Molded Case Circuit Breakers MCCB ABB Specification 007 Molded Case Circuit Breakers MCCB ABB Specification 008

According to user’s demands, accessories could lead to direct wire outcoming or line wiringterminals could be added(please mark out in case of making order).

Under-voltage release
Wring diagram of the under-voltage module connected externally (the internal accessories inthe dotted frame)Ue: AC50Hz 230V, 400V

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