Scope of application 

SMGB2-63 series of small circuit breakers are mainly used in AC 50Hz / 60Hz, rated voltage of 230V / 400V and below, rated current to 63A of the circuit for overload, short circuit protection, but also under normal circumstances for the line Do not frequently use the conversion. The circuit breaker is mainly used for modern construction of electrical wiring and equipment overload, short circuit protection, is also applicable to the line of infrequent operation and isolation.

This product complies with GB10963.1 standards, access to CCC compulsory certification.

Model and meaning 

Structure characteristics

SMGB2-63 series of small circuit breakers from the plastic housing, operating mechanism, contact, interrupter system, trip mechanism and other components. The shell adopts the special plastic with high flame-retardant and high strength, which has strong impact resistance and light weight. The parts of the circuit breaker operating mechanism adopt the high-strength plastic products, which ensures the sensitive and reliable while obtaining the lowest moment of inertia, The time it takes for the fault to start to trip is short. The tripping mechanism is composed of a bimetal over-load reverse-time trip mechanism and a short-circuit instantaneous electromagnetic mechanism. The arc-extinguishing system uses a special arc-guiding grating and an arc-extinguishing chamber, which has significant current limiting characteristics.

The main technical parameters 

Outline and mounting dimensions (mm)