Blue Sea Battery mount switches 300A

Blue Sea Battery Mount Switches 2-position - Switches a single battery to a single load group. Ignition protected - safe for installation aboard gasoline powered boats

Case design allows surface, front panel, or rear panel mounting. Isolating cover with snap-on sections protects rear contacts.

A very high-quality traditional 2-position ON-OFF battery switch, especially suitable as the main switch between the engine and the starter battery, but also excellent as a main switch between the battery and electronics or between the battery and a bow-mount trolling motor.

• Especially suitable for 12V and 24V systems, but this battery switch can also be used in 36V and 48V systems
• Tinned copper terminal studs, a very high-quality switch that lasts for years
  Maximum conductivity and corrosion protection
• The studs accept M10 ring terminals

Blue Sea Battery Mount Switches 2-Position Main Features:

• Switch Type: Single Circuit ON-OFF
• Color: Black  
• Switch Positions: 2 
• Battery Combine: No  
• Alternator Field Disconnect: No  
• Maximum Voltage: 48V 
• Stud Size: 3/8" 
• Terminal Stud Torque: 120 in-lb (13.56 Nm) 
• Continuous Rating: 300A  
• Intermittent Rating: 500A 5min 
• Cranking Rating 30 sec: 900A 
• Battery Inputs: 1
• Cable Clearance For 4/0 AWG Cables: 1.12in (28.45 mm) 
• Cable Size to Meet Ratings: 4/0 AWG (120mm²) 4/0 AWG (130mm²) 
• Mounting Holes: Accept #10 Screw 
• Stud Material: Tinned Copper 
• Stud Torque: 120 in-lb (13.56 Nm) 
• Terminal Stud Size: 3/8" - 16 (M10) 
• Weight: 0.65lb (0.29 kg)  
• IP66

CE, Ignition Protected,  ISO 8846 Marine, SAE J1171 Marine, UL 1107, UL1500

Product text updated 26.9.2026.