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mb50 series

molded case circuit breaker
mb50 series molded case circuit breakers are suitable for distribution system with ac 50/60hz, rated current 16~800a and rated voltage ac400v for overload and short circuit protection. this series has optional leakage and dc molded case circuit breakers, which can be widely used in civil building, public building, industry, rail transit and other industries.

unique features for ultimate protection


● cbi (optional overload, alarm, non-trip function), ensuring the continuity of power supply for critical loads
● high breaking capacity for full series of icu280ka, ics255ka


box-mounted, double-insulated


● electrical accessories are installed in modular boxes, making it easy to operate, safe and reliable
● the circuit breaker adopts dual insulation to completely isolate the main energized parts from the shell part to ensure the safety of the operator


innovative structure with thermomagnetic adjustable


● innovative arc-extinguishing structure design, achieving zero flashover for the whole series of products, with excellent and stable arc-extinguishing performance
● adjustable thermomagnetic with 0.8-1 times in settable for long delay protection and 5-10 times in settable for instantaneous protection


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