Chint NJBK7 Motor Protection Relay

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NJBK7-800 series motor protection relay (hereinafter referred to as “Protector”) is applicable for overload protection,locked rotor protection,phase failure protection, three-phase imbalance protection,undercurrent protection,grounding protection , PTC temperature protection and communication failure protection for AC electromotors of a frequency of 50Hz with a rated insulation voltage of up to 690V and a rated operating current of 1A~800A during long-term and discontinuous operation,
This protector is provided with RS485 interface and 4mA~20mA current loop transmitter interface for network communication and performs remote monitor control on the motor and fault query through opper computer. This protector is usually used to combine with AC contactor.
This product conforms to IEC60947-4-1.

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