Overview of Electronic Moulded Case Circuit Breakers

Date | 2022-09-20 13:42:28

The electronic moulded case circuit breaker is a new generation circuit breaker developed using advanced design and manufacturing technology with a rated insulation voltage of 400V, AC 50Hz, rated operating voltage of 400V, rated current infrequent conversion to 800A and infrequent motor start. The circuit breaker has overload long delay time limit, short circuit short delay time limit, short circuit short delay time limit, short circuit instantaneous and low voltage protection functions to protect circuits and power supply equipment from damage.


Electronic moulded case circuit breakers incorporate intelligent, high-tech electronic tripping devices based on digital electronics for faster and safer protection. A wide range of adjustments makes it easy to upgrade the system. The outstanding computing power of the processor and the patented transformer technology enable the user to provide measurement information and operational management functions which enable the user to avoid or deal more effectively with disturbances occurring in the system and to monitor the operation of the system more actively.


塑壳断路器

Protection functions can be set by adjusting the adjustment knob


Overload protection: long delay protection


Overload protection with inverse time characteristic, adjustable overload protection current value Ir, adjustable overload protection operating time Tr.


Short-circuit short-delay protection


Short circuit short delay current value Isd adjustable, delay time adjustable very short delay after circuit breaker trips, can be used for selective fitting with sub-breakers (class B closing)


Short-circuit momentary protection


Momentary short-circuit protection current value adjustable