NR301 Three-phase Thermal Relay Tester
NR301 Three-phase Thermal Relay Tester is a new generation of tester developed by our company based on user feedback information from all over the country and years of practical experience. It is mainly used for setting and verifying various thermal relays and motor protection devices. Because of its reasonable design, convenient operation and large output power, it is widely used in the electrical test sites of power systems, railways, petrochemicals, metallurgy, mining and so on.