An ELCB (Earth Leakage Circuit Breaker), RCD (Residual Current Device), and RCCB (Residual Current Circuit Breaker) Tester Kit, Type SI/RCCB, is a specialized testing and calibration equipment used for verifying the correct operation and performance of these electrical safety devices. ELCB Testers, RCDs, and RCCBs are crucial components in electrical systems that protect against electrical faults, ground faults, and leakage currents