The CS5F-400 is a high-efficiency contactor produced by Fuji. It features a four-pole design with contact ratings of 400 amperes, an operating range of up to 600 volts, and a maximum switching capacity of 65,000 watts. It also features a low-profile design and a long MTBF of up to 150,000 operating hours. This contactor is designed to be used in harsh environments and is able to withstand extreme temperatures, dust, shock, and vibration.