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JBTB1L-63 Residual Current Circuit Breaker


JBTB1L-63 series Residual Current Circuit Breaker is suitable for AC 50Hz, rated working voltage of 230V for single-pole two-wire and two-pole product, 400V for three-pole and three-pole four-wire and four-pole product, and for rated current up to 63A. 



This product is used for indirect contact protection of people and overcurrent protection of wiring in buildings and similar applications. It can also provide protection against fires caused by ground faults that persist due to inactive overcurrent protection devices. The leakage circuit breaker with overvoltage can also protect the overvoltage due to grid fault.

This series of products has been used more and more in the low-voltage power distribution system as the backup protection for ground fault and direct contact and indirect contact electric shock.


Applicable standard



Model Explanation

Product Categories

According to the rated current, there are: 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A;

According to the pole number, there are: 1P, 1P+N, 2P, 3P, 3P+N, 4P;

According to the instantaneous trip type, there are: C type, D type;