This product uses 4.8W (30 minutes) and 2.4W continuous work. It can be applied to automobile and large vehicles such as truck, small sized crane, combine-harvester etc. And it is also widely used in automotive warm-up and startup switch. Features: 12V 100A heavy current start relay. 4.8W for 30 minutes work, 2.4W for continuous work. High quality: adopting red copper binding post, ensuring the maximum electric current can be transferred. Contact voltage is 1A, while rated voltage is 12V. Wide applications: It can be applied to automobile and large vehicles such as truck, small sized crane, combine-harvester etc. It can be served as startup switch. Specifications: Contact load: 100A Contact form: 1A Contact material: AgSnO Rated power: 12V Max switching voltage: 14VDC Max switching current: 100A Pin number: 4 pin Item size: 6.3 * 4.6 * 4.6cm / 2.5 * 1.8 * 1.8in (L * W * H) Item weight: 100g / 3.5oz Package size: 9 * 8 * 6cm / 3.5 * 3.1 * 2.3in (L * W * H) Package weight: 113g / 3.9oz Package List: 1 * Start relay