The 214A511-3-0 is a TE Connectivity DEUTSCH, 4-Way Rectangular Connector, with a Wire-to-Wire connection. The connector has a shell size of 21, with 4 #20 AWG contacts and a silver-plated copper alloy contact material. It is suitable for use in airframe, medical and medium-power applications. Its mating system is designed to provide superior connection integrity and resistance to vibration and shock. The connector is rated for operating temperatures from -55°C to +125°C, and has an insulation resistance of >500 MOhm.