NJBK7 Description
Type designation N JBK 7 - 800 / □ Relay Protection Relay NJBK7 Motor protection delay 1. General NJBK7 series motor protection relay (hereinafter referred to as protector) is used to provide overload, locked rotor, phase failure, three-phase current unbalance, ground and PTC temperature protection for AC motors with a frequency of AC 50Hz, a rated insulation voltage of up to 690V and a rated operational current of...