Profile: Tianshui 213 Electrical Apparatus Co., Ltd. is a manufacturer & exporter of low-voltage apparatus devices and automation devices. We are an ISO 9001:2000, ISO 14001:2004 and OHSAS 18001:1999 certified company. Our main products include AC contactor, DC contactor, thermal overload relay, time relay, MCB, MCCB, ACB, master switch and wired cabinets. JRS4-d series thermal overload relay is used in AC circuit 50/60 Hz, rated operational voltage up to AC 660V, for the purpose of overload protection and phase-failure protection of the motor. GSZ2 series single pole normally open DC contactors are mainly applied to DC circuit with rated current from DC 50 A to DC 400 A, and rated operational voltage DC 48V & rated insulation voltage up to 60V DC. GSB1Z-40 series miniature circuit breaker is mainly used in DC circuit with rated operational voltage up to DC 250V, with operational current up to 40A. It can be attached with auxiliary contact, alarming contact, and shunt release.