For starting small engines, including lawn tractors, golf carts and sweepers. 12V DC. SPST normally open contacts. 200A make and break, 5 secs On, 5 secs Off, 300A inrush. 

 Allow at least 40 secs cooling after maximum On time. Copper contacts. Maximum operating voltage 14V DC. Cycle life: 10,000 minimum. Sealed against ingress of contaminants such as oil or gasoline, dirt and moisture. Bracket mounting holes 5/16" x 19/32" (7.9 x 15.1) on 2 13/64" centers (56.0mm).