Cole Hersee Single Pole Brass Marine Battery Switch - 175 Amp - Continuous 800 Amp Intermittent

The Cole Hersee Single Pole Brass Marine Battery Switch is a UL-listed master disconnect switch engineered for marine electrical systems requiring reliable, high-capacity load control. With continuous rating of 175 amps and intermittent capacity of 800 amps, this brass-housed switch handles the demanding power distribution found in fishing boats, cruisers, and offshore vessels where electrical reliability directly impacts safety and equipment longevity.

Operating across 6–36 VDC, the switch delivers 250 amps at 6 volts and 125 amps at 12 volts in intermittent service—specifications that accommodate everything from single-engine sport boats to multi-system cruising vessels. The single-pole, two-position (Off-On) design uses a lever actuator for positive control, while silver or brass contact options provide flexibility based on electrical configuration. The compact 4 × 4 × 9 inch footprint fits standard panel mounting, and the brass case resists corrosion from salt spray and humid marine environments better than ferrous alternatives.

Weekend anglers upgrading battery systems or serious offshore fishermen running multiple batteries for extended range will appreciate the switch's ability to isolate main power cleanly without the voltage drop or contact resistance issues that plague undersized disconnect switches. Onboard redundancy—such as dual batteries for backup starting power or separate house and engine banks—depends on a master disconnect that operates without hesitation in rough seas or emergency conditions. The lever design provides tactile feedback and works reliably even when gloved or when salt accumulation requires occasional cleaning.