Pro Installer 400A Double Pole Battery Switch - MC10A powerful new generation battery switch with outstanding performance and features for both the installer and end user. Three mounting options: surface, rear panel, and front panel mounting, plus optimized cable access makes installation a breeze. Pro Installer switches set the new benchmark with outstanding ergonomics, intuitive look/feel, and are engineered from the finest materials to withstand the harsh marine environment. Same industry standard mounting with On/Off operation. Used where positive and negative supplies must be isolated at the same time. SAFETY NOTE: BEP does not recommend this for switching house and start battery systems at the same time, for safety reasons. You may need to isolate your engine battery in an emergency, but not your house battery which typically powers the communicationsSpecificationsMounting: Surface, Rear or FrontVoltage: 48v DC (for 12-48v systems)Rating: 400 Cont / 600 Inter / 1500 CrankDims: 3.85" x 3.85" x 3.62"Operation: On/OffStud: 4x 10 mm (3.8")WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.