KT Moulded case circuit 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, complete accessories & high break-ing capacity, used for power distribution and protecting the circuit and electrical equipment against overload and short circuit. It complies with standard of IEC947-2.

TRIPPING CHARACTERISTICS OF MCCB
Rated current of release (A) In <= 63 63< In<=250 25< In<=800
1.05In (cold state) inoperative time (h) >=1 >=2 >=2
1.30In (heat state) inoperative time (h) <1 <2 <2
Operational current of magnetic release(A) 10-50In± 20% 10In± 20% 5-10In± 20%