The 12 V 200 A Continuous-Duty SPST Series Insulated Solenoid Relay (24213-01) is designed with a plated steel housing, single-pole, single-throw (SPST) circuitry, and normally open contacts. This model features a 12 V coil and a coil impedance of 17.5 ohms. This insulated solenoid features studs that are electrically isolated from the housing. The heavy-duty, durable contacts and the high contact force developed by the solenoid allow this relay to handle high current loads. Where vehicle vibration is a problem, we recommend the 24213-01 in which the internal windings are potted for added protection of coil leads and studs.