Aug 19, 2020 · The circuit breaker text symbol is: QF. The graphic symbol of the circuit breaker is: Contactors. Contactors are divided into AC contactors (voltage AC) and DC contactors (voltage DC). They areposed of electromagnetic mechanism and contact system. The mostmon coil voltages are AC220V, AC380V and DC220V.DC contactor as a key EV parts, it is used to switch power of DC loads supplied by the traction battery in an EV. From the volume of the coil, it can be distinguished that for the case where the main circuit current is too large (Ie> 250A), the contactor should uses double series windings coil. Fa Yuen Commercial Building, FA Yuen Contactor relays in the Automation24 product range Automation24 offers Siemens contactor relays in various versions with different control voltages such as: contactor relay Siemens 3RBB40 and contactor relay Siemens 3RAP00 . Inquiry Online Leave a Message. Eaton 30-Amp 2-Pole 240V Definite Purpose Contactor at Menards®Alibaba offers 15 Schneider Isol Suppliers, and Schneider Isol Manufacturers, Distributors, Factories, Companies. There are 11 OEM, 12 ODM, 5 Self Patent. Find high quality Schneider Isol Suppliers on Alibaba.