Product Details:

Application

GNM1 series moulded case circuit breaker is one of products developed and manufactured by adopt-ing international advanced technology. It is supplied with rated insulating voltage 500 and 800V and used for the circuit of AC 50/60Hz, rated operating voltage AC 400V (or below), rated operat-ing current up to 1600A for infrequently changing over and starting of the motors. The products con-forms to 1EC60947-2 standard.

Main Technical Specification

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-release 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.

4. Accessories of Circuit Breaker

4.1 The external accessories of the breaker

●Electromagnetic operation device and Motor-driven operation device

1) Wiring diagram of type CDM electromagnetic operation device(itting HM 1-63, 100,250) see the following drawing (wiring diagram of the external accessories of the breaker in the dotted frame)

Code description: SB1, SB2 stand for push button.(provided by users themselves) Number“1”、“2”、 “3” stand for number of wiring terminals.

Voltage rating: AC50/60Hz 230V 400V, DC 220V

2) Wiring diagram of type CD Electromagnetic operation device and motor-driven operation device (ittingHM1-400、 630、 800) see belows (wiring diagram of the external accessories of the breaker in the dotted frame)

Code description: SB1, SB2 stand for push button. (provided by users themselves)“X”stands for line connection terminals Voltage rating: AC50/60Hz 230V 400V, DC220V

●Rotary handle operation device

The mechanism is used with moulded case circuit breaker to operate the draw-out panel.

Power distribution panel and supply box outside the panel by turning the handle ,and to ensure the door 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" model square handle , the other is“B" model round handle.

4.2 Release pattern and accessories code

According to user's demands, accessories could lead to direct wire outcoming or line wiring terminals could be added(please mark out in case of placing order).

●Under-voltage release

Wring diagram of the under-voltage release connected externally (the internal accessories in the dotted frame)

Ue: AC230V, 400V

When the operation voltage is 35%~ 70% of the rated voltage, the under-voltage release should make the breaker trip correctly.

When the operation voltage is 85%~110% of the rated voltage, the under-voltage release should make the breaker close.

In case of the operation voltage less than 35% of the rated voltage, the under-voltage should prevent the breaker from closing.

Note: Only the under-voltage release should be energized in advance , the breaker could be recramped and turned-on, otherwise the breaker will be damaged.

●Shunt release

Wring diagram of the shunt release (the internal accessories in the dotted frame)

“K" is the slow motion switch normal-close contact connect the coil in series in the shunt release.

It turns-on or turns-off automatically as soon as the breaker on or off.

Voltage rating: AC230V 400V, DC 110V 220V

The shunt release should make the breaker trip reliably when the operation voltage is 70%~110% of the rated control voltage.

Outline and Installation Dimensions (mm)