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STLB Residual Current Circuit Breaker:
The STLB RCCB (residual current circuit breaker) provides the functions of isolation, switching and earth leakage protection of electrical circuits. It has residual
current operated electromechanical release. It can be operated without any auxiliary
source of supply to open a circuit automatically in the case of an earth leakage
fault between phase and earth greater than or equal to a threshold of 10m A,
30m A, 100m A, 300m A or 500m A.
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