Moulded Case Circuit Breaker

 

GYCM3 Series  Moulded Case Circuit Breaker (MCCB) 

General information 

GYCM3, GYCM3L, GYCM3E series circuit breaker, is the new upgraded product developed with advantages of similar 

international products and domestic and foreign market demand. 

Rated insulation voltage this series up to 1000V, suitable for power distribution network with AC 50Hz, rated voltage 

400V (690V), rated current to 800A , used for distribution of electrical energy and protection the circuit and power 

equipment from overload, short circuit, undervoltage and other faults. At the same time, it can also be used as the 

infrequent start and overload, short circuit, undervoltage protection of the motor. 

The circuit breaker has the characteristics of small size, high breaking capability and short flying arc. The circuit 

breaker can be installed vertically or horizontally. 

This product conforms to iec60947-2, GB/T14048.2 and other standards. 

Product features 

 Compact design 

Size of the product is more compact, meets different installation requirements of customers. 

 Uniform size 

Under same case grade, unformed installation dimension for different breaking capability (S, H), different function (air, 

leakage). 

 Optimized function parameter setting 

Applicable working and installation condition 

 Attitude below 2000 meters 

 Ambient temperature is < +40℃(+45℃ for Marine products) and > -5℃ 

 Resistance against humidity 

 Resistance against mold 

 Resistance against nuclear radiation 

 Maximum inclination 22.5° 

 Work reliably under normal vibration of the ship 

 Work reliably in case of earthquake (4g) 

◆To be installed in an environment without conductive dust, explosion risk, and metal parts and insulation shall 

be protected against corrosion. 

 Protected against rain and snow

   

ZHEJIANG GEYA ELECTRICAL CO.,LTD