The thermal overload relay is designed with reasonable structure, small volume, large-capacity contact, and long service life. Temperature of each bimetal has been corrected precisely. Changsheng Electric has been dedicated to manufacturing electric safety device since 1997. There are now mainly 3 products provided in Changsheng: thermal overload relay, disc thermostat, and thermal fuse. We are committed to offering users reliable and comprehensive circuit safety and thermal protection solutions. &nb