BTEB SSC Vocational Practice Questions - Bangladesh Technical Education Board Secondary School Certificate (SSC) Vocational Examination Exam

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Which electrical protective device is specifically engineered to detect minute earth leakage currents (e.g., 30 mA) and rapidly trip to protect humans from fatal electrocution?

Miniature Circuit Breaker (MCB) Thermal Overload Relay (TOR) Residual Current Circuit Breaker (RCCB / ELCB) Cartridge Fuse

Correct Answer:

Residual Current Circuit Breaker (RCCB / ELCB)

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