Features 1、Heavy duty rated 2500 Amps intermittent, 275 Amps continuous at max.48V DC. 2、Compact size, sleek modern appearance, sturdy and durable. 3、Waterproof cover can better protect key hole. 4、Universal for cars, offroad vehicle, truck, motorcycle, boat, etc. 5、Professional characteristics, high reliability. Specification Features: 1. Heavy duty rated 2500 Amps intermittent, 275 Amps continuous at max.48V DC. 2. Compact size, sleek modern appearance, sturdy and durable. 3. Waterproof cover can better protect key hole. 4. Universal for cars, offroad vehicle, truck, motorcycle, boat, etc. 5. Professional characteristics, high reliability. Specification: Rated current: 300A Instantaneous current: 1000A Continuous current: 275Amps DC Intermittent current: 2500Amps DC Starting current: 1000Amps DC Maximum voltage: 12V-48Volts DC Dielectric strength: 1500VAC/1min Electrical life: 10,000 times Screw diameter: 10mm Screw distance: 30mm Pitch: 55mm Operation: On/Off Installation: back / surface Terminal bolt size: 2 * 10 mm Weight: about 213g/7.51oz Package Size: about 8*7.5*7.5cm/3.15*2.95*2.95in Package List: 1 * Battery Switch 1 * Accessories Kit Package List