SEACHOICE Dual Battery Select Switch 12–50V (Red) — 250A Continuous, UL Listed

The SEACHOICE Battery Select Switch is a UL-listed, ignition-protected dual battery isolator that safely selects, disconnects, or parallels two or more 12–50V batteries for starting, charging, and onboard power management.

Small boats and larger vessels alike need a reliable way to manage multiple battery banks without complex wiring. This Seachoice dual battery selector switch (MPN 50-11501) combines a bright red polycarbonate housing with an easy-turn black knob to give clear, durable control over two or more batteries. Rated for systems up to 50V, the unit is CE approved and UL listed for ignition-protected marine use, making it suitable for typical starting, charging, and accessory circuits.

How does this switch simplify starting and charging?

The switch lets you choose which battery supplies starter power or set both batteries to charge together. That provides flexibility for conserving a dedicated starting battery or combining banks when extra current is needed for charging or heavy loads.

• Select individual battery banks for starting or accessory use
• Parallel position allows simultaneous charging of multiple batteries
• Manual knob offers fast, tactile switching without tools
• Useful for engine starts, charging from alternators or shore power

Is it durable and safe for marine environments?

Yes—Seachoice built this unit with marine conditions in mind, using a bright, impact-resistant polycarbonate housing that resists corrosion and UV exposure. Certification and ratings show it meets common safety expectations for onboard electrical components.

• UL listed and CE approved for marine electrical use
• Ignition-protected design reduces risk near fuel vapors
• Polycarbonate body resists saltwater and sun damage
• 250A continuous, 360A intermittent capacity for heavy loads

What installation and sizing details should I know?

The switch is compact and straightforward to mount, with clear sizing and amp ratings to match typical boat battery systems. Confirm your system voltage and conductor sizing before installation to ensure safe performance up to 50V.

• Supports systems from 12V up to 50V
• Dimensions: 5-1/4 inch × 2-5/8 inch for small-footprint mounting
• Rated 250A continuous, 360A intermittent for heavy draw events
• Manufacturer part number: 50-11501 for parts and replacements

How will this switch integrate with my boat’s electrical layout?

The dual switch connects inline with battery banks and alternator or charger outputs, letting you route power manually between batteries or tie them together. It’s suited for both simple two-battery setups and multi-battery systems where manual control is preferred.

• Use to isolate a dedicated start battery from house loads
• Create a parallel charging position for faster recharge when needed
• Works with two or more batteries and common marine charging systems
• Knob and housing design provide quick visual and tactile feedback

Who is this for: Boat owners, fishermen, watersports operators, and marine technicians who need a rugged, easy-to-use manual battery selector for managing multiple battery banks. The SEACHOICE Dual Battery Select Switch is ideal for vessels requiring a compact, ignition-protected isolation switch with clear positions for selecting batteries or paralleling them for starting and charging. If you want a proven, serviceable solution with UL and CE recognition and a high amperage rating in a compact package, this switch is designed to meet those needs.