Product name: Differential relay
 Brand: ETEK
 Model: EKELR-30
 Contacts: 1NO+1NC
 Weight: 0.3KG
 Operation time: 15ms Max
 What is an earth leakage relay?
 An earth leakage relay is a device used to detect earth leakage and open a circuit breaker when the leakage current exceeds the preset value. It can protect humans from electrocution and prevent fire hazards. Earth leakage relays are used in combination with core balance current transformers (CBCT) or zero phase current transformers (ZCT).
EKELR-30 earth leakage relay is mainly used for type A residual current monitoring and fire alarm in 110/230VAC distribution circuits. The relay detects the residual current on the line through a Zero Sequence Transformer. This product has the function of 30mA-30A adjustable residual current and 50ms-5s adjustable action time. The output is switched and controlled by a group of 6A 250V 1NO+1NC relays, please refer to the instruction manual before use.