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Mini 4P Thermal Magnetic Molded Case Circuit Breaker With Electrical Generators

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WENZHOU SANTUO ELECTRICAL CO.,LTD.

Mini 4P Thermal Magnetic Molded Case Circuit Breaker With Electrical Generators

Country/Region	china
City & Province	wenzhou zhejiang
Categories	Battery Chargers

Product Details

Mini 4P Thermal Magnetic Molded Case Circuit Breaker With Electrical Generators

GENERAL

STM1 Moulded case ciecuit breaker is suitable for circuit AC 50HZ/60HZ, rated voltage up to AC 660V,rated operating current to 630A.It features normal structure,reliable performance,compete accessories & high breaking capacity, used foe power distribution and protecting the circuit and electrical equipment against overload and short circuit. It complies with standard of IEC 60947-2 and GB14048.2

Specifications

Frame size rated current(A)	Circuit rated current	Rated current at N-pole	Frame size rated current	Circult rated current	Rated current at N-pole
63	10	10	225	100	100
	16	16		125	100
	20	20		160	100
	25	25		180	100
	32	32		200	100
	40	40	400	225	125
	50	50		225	225
	63	63		250	225
100	25	25		315	225
	32	32		350	250
	40	40		400	250
	50	50		400	250
	63	63	630	500	315
	80	63		630	350
	100	63

Molded case circuit breakers can have very high current ratings, which allows them to be used in heavy duty applications. The following are some typical uses of an MCCB:

Main electric feeder protection – The electric feeder circuits that supply power to large distribution boards normally have very high currents, of hundreds of amperes. In addition, if more circuits are added to the system in the future, it may be necessary to adjust the circuit breaker trip settings. Therefore, a molded-case circuit breaker is required.
Capacitor bank protection – Capacitor banks are a very important component of commercial and industrial electrical systems, since they allow power factor correction – reducing line currents and preventing fees from the electric utility company. Large capacitor banks may draw high currents and will require MCCB protection.
Generator protection – Large electrical generators may provide an output of hundreds of amperes. In addition, gen-sets are normally very expensive. The high current ratings of molded case circuit breakers allow them to provide reliable protection in this application.
Welding applications – Some welding machines may draw very high currents that exceed the capabilities of miniature circuit breakers, requiring the use of an MCCB.
Low current applications that require adjustable trip settings – MCCBs are not only for high current applications. There are models rated below 100 amperes for when low current equipment requires the adjustable trip settings provided by MCCBs.

Motor protection – The reliable protection capabilities of MCCBs make them an adequate choice for motor protection. A molded case circuit breaker can be adjusted to provide overload protection without tripping during the inrush current of an electric motor