... break moving contact bridge with permanent magnet; relatively large breaking capacity. OV137 series DC contactors can be applied for railway diesel ... ) and other industrial electric automation control equipment. Such DC contactors are used to control circuit in locomotives and rolling ... times Models Selection1- Coil control voltage of OV137 series DC contactors can be DC 12V, 24V, 36V, 48V, 72V, 80V and ...