An Earth-leakage circuit breaker (ELCB) is a safety device used in electrical installations with high earth impedance to prevent shock . It detects small stray voltages on the metal enclosures of electrical equipment and interrupts the circuit if the voltage level exceeds the danger threshold. Specifications: Brand Name: CHNT Origin: CN(Origin) Type: Mini is_customized: Yes Model Number: NXBLE-125 3P+N Package Includes: 1 x CHNT CHINT NXBLE-125 3P+N