Off/On Combine Battery Switch without Base - Surface Mount - RedThe Dual Circuit Plus switch builds on the standard dual circuit configuration by adding an emergency parallel function. This allows both circuits to combine instantly in the event of a start battery failure-delivering backup power when you need it most.Smart Power Management Provides secure isolation during normal operation Emergency parallel mode ensures dependable backup starting power Ideal for both marine switch panels and RV electrical systems Durable Marine-Grade Construction Non-corrosive marine-grade metals and reinforced polycarbonate housing Ignition protected for safe use aboard gasoline-powered boats Built to withstand vibration, salt spray, and harsh environments High-Performance Connections 3/8"-16 tin-plated copper studs maximize conductivity and resist corrosion Compatible with both 3/8" and M10 ring terminals 7/8" stud length fits multiple cable terminals with ease User-Friendly Design Tactile knob textures make the switch position easy to feel International ON/OFF legends and ICON label set included Versatile mounting options: surface, front panel, or rear panel Why Choose the Dual Circuit Plus Switch?This switch combines isolation, emergency backup, and rugged construction in one unit. Whether upgrading a boat or RV, the Dual Circuit Plus delivers reliable performance and peace of mind on the water or on the road.Specifications: Continuous Rating: 300 Amps DC Intermittent Rating: 450 Amps DC (5 min) Cranking Rating: 675 Amps DC (30 sec) Max Voltage: 32VDC Cable Size: 4/0 AWG