DC Contactor for Locomotive

OV195SE low voltage series DC contactors can be applied for railway diesel locomotives, subway rolling stocks, EMU (electronic multiple units), DMU (diesel multiple units) and other industrial electric automation control equipment. Such DC contactors are used to control circuit in locomotives and rolling stocks. The production standards comply with GB/T 21413.1-2008/IEC 60077-1:1999; GB/T 21413.2-2008/IEC 60077-2:1999; and TB/T 2767-1996. Magnetic coil of such DC contactors is equipped with voltage suppressor which can inhibit the self-induced electromotive force of the coil. Auxiliary contact is fast-moving, self-cleaning and sealing OV870W1D1a. Technical Parameters Main Contact Rated Voltage (Ue) DC 110V Rated Current (Ie) (DC-1) DC 250A Auxiliary Contact OV870W1D1a Rated Voltage (Ue) DC 110V Conventional Thermal Current (Ith) DC 5A Rated Current (Ie) (DC-13) DC 0.3A Protection Class (Pollution Level 3) Whole Contactor & Auxiliary Contact Wiring IP00 Auxiliary Contact IP40 Coil Power About 25W Weight (excluding mounting base) OV195SE About 1.6 Kg OV195WE About 1.8 Kg Mechanic Life Over106 times Electric Life Over105 times Models Selection 1- OV195SE series low voltage DC contactors are currently used as contactors of start pumps (QBC) in diesel locomotives. 2- Coil control voltage of OV195SE series low voltage DC contactors can be DC 12V, 24V, 48V and 80V, and coil working voltage is between 80% and 110%. 3- External wiring mode is below: Main Contact: M8 Screw Coil Wiring: M4 Screw Auxiliary Contact: A 6.3/0.8 insert (DIN 41636) 4- When 96V storage battery is used for contactor coil power supply, coil control voltage of the contactor should be 80V which can ensure enough contact pressure. 5- At most 2 sets of auxiliary contact (2 NO + 2 NC) can be installed (Note: OV195WE series DC contactors have no auxiliary contact). 6- When voltage suppressor is parallel connected to two ends of coil, wiring should be as per polarity signs. 7- If main contact of the contactor is permanent magnet and in arc distinguishing mode, wiring should be as per polarity signs. 8- Auxiliary contact OV870W1D1a is conversion type, and NO and NC of a same contact cannot be for a different electric potential. Otherwise, arc short circuit will occur. Please contac us if you are interested in such contactors. Wiring Diagram andStructural Size information is available.