The GM series DC molded case circuit breaker is a new type of circuit breaker developed by Beijing People's Electric Appliance Factory using international advanced design and manufacturing technology. Its rated working voltage is DC250V, DC440V, DC660V, DC1140V, and rated working current is up to 1250A in circuits. Circuit breakers have short-circuit, overload, and undervoltage protection functions, which can protect the circuit and power equipment from damage.

[Compliant with standards]
IEC60947-1 GB14048.1 General Provisions
IEC60947-2 GB14048.2 Low Voltage Circuit Breakers

[Features]
The GM series molded case circuit breaker adopts patented arc extinguishing technology CCV, which includes quadruple acceleration and narrow gap breaking to eliminate free arc extinguishing technology, achieving zero arcing and higher breaking capacity (DC250V) 20kA, (DC440) 15kA, and Ics=100% Icu. In terms of anti-corrosion performance, the most advanced international process of increasing hardness and anti-corrosion surface treatment, soft nitriding and matte electroplating, is adopted to make the product's anti-corrosion performance higher than nickel plating, suitable for high protection level use, small size, and beautiful appearance. The world's first GM100 series with load indicator lights eliminates the need for dedicated indicator lights on the screen panel, saving space and simplifying the wiring inside the screen.

[Basic Parameters]
Rated current of shell level: 1002254008001250A
Polar numbers: 2P, 3P, 4P
Rated working voltage: DC250V, DC440V, DC660V, DC1140V
Ultimate short-circuit breaking capacity: M standard type, H high type, R advanced type
Operation mode: direct operation of the body, P electric operating mechanism, Z rotating handle operation;
Wiring methods: front board wiring, B-board rear wiring, C plug-in wiring

[Model meaning]
GM 225 M/2 3 00R 125A
That is, the GM series shell level rated current is 225A, the ultimate short-circuit breaking capacity is M standard type two pole DC plastic shell circuit breaker, using a compound release (overload long delay+short circuit instantaneous), the rated working current is 125A, and the wiring is in front of the board.

[Operating Environment]
Altitude of 2000m and below;
The temperature of the surrounding medium should not be lower than -5 ℃ and not higher than 40 ℃. If it is higher than 40 ℃, it can be used with reduced capacity;
Can withstand the influence of humid air;
Capable of withstanding the effects of salt spray and oil mist;
Can tolerate the influence of mold;
Can work reliably under normal ship vibration;
In a medium without explosive hazards, and where there is no gas or conductive dust that can corrode metals or damage insulation;
In a place without rain or snow invasion.