Sea-Dog SPST On/Off Toggle Switch, Stamped Brass, 12 Volt 15 Amp, 420465-1

The Sea-Dog 420465-1 is an SPST On/Off toggle switch built from stamped brass for durability and corrosion resistance in marine environments. It wires easily using two screw terminals, making it a straightforward addition or replacement for helm panels, accessory circuits, bilge pumps, lighting, and other basic on/off electrical controls aboard a boat. The switch is rated 12 Volts DC at a maximum of 15 Amps, and is designed for a maximum panel thickness of 3/8 inch, with a bushing diameter of 3/8 inch (A) and a mounting hex/nut dimension of 7/16 inch (B). Its all-brass construction resists the salt air and moisture exposure common on boats, and the simple SPST On/Off action makes it a reliable choice where a single-circuit switch is needed without momentary or multi-position functions. For installations exposed to spray or wash-down, a waterproof cap (Sea-Dog 420479-1) is available separately and fits over this switch to add a layer of protection against water intrusion. This toggle switch is a panel-mount design suited for standard marine electrical panels and small craft wiring projects where a compact, corrosion-resistant switch is required.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 420465-1
• Switch Type: SPST On/Off Toggle Switch
• Material: Stamped Brass
• Voltage: 12 Volts DC
• Maximum Amperage: 15 Amps
• Dimension A: 3/8 inch
• Dimension B: 7/16 inch
• Maximum Panel Thickness: 3/8 inch
• Mounting Type: Panel Mount
• Terminal Type: Two Screw Terminals
• Weight: 0.07 pounds
• UPC: 035514420075

Fitment

This is a universal panel-mount toggle switch and is not restricted to a specific boat make, model, or engine.

Replaces (OEM)

No manufacturer cross-reference numbers are specified for this part.

Frequently Asked Questions

What type of switch is the Sea-Dog 420465-1? It is an SPST On/Off toggle switch, meaning it has a single-pole, single-throw action with just two positions: on and off, no momentary or multi-circuit function.

What voltage and amperage is this switch rated for? The 420465-1 is rated 12 Volts DC with a maximum current of 15 Amps, suitable for typical marine accessory and lighting circuits.

What is the switch made of? Stamped brass, chosen for corrosion resistance and durability in the salt air and moisture exposure common on boats.

How do I wire the 420465-1 toggle switch? It wires easily using two screw terminals, so no soldering is required to connect the circuit leads.

What panel thickness does this switch support? The Sea-Dog 420465-1 is designed for a maximum panel thickness of 3/8 inch.

What are the mounting dimensions of this switch? The bushing diameter (A) is 3/8 inch and the mounting nut/hex dimension (B) is 7/16 inch.

Is a waterproof cap available for this switch? Yes, Sea-Dog offers a waterproof cap, part number 420479-1, sold separately, that fits over the 420465-1 to help protect it from water intrusion.

How much does the 420465-1 toggle switch weigh? It weighs 0.07 pounds.

Will this switch fit a specific boat make or model? The 420465-1 is a universal panel-mount toggle switch, not restricted to a specific boat make, model, or engine.

Does the switch include mounting hardware? The 420465-1 is the switch itself; the waterproof cap is a separate accessory (420479-1) and is not included.

Can this switch be used for bilge pumps or lighting circuits? Yes, the SPST On/Off design of the 420465-1 works well for basic single-circuit applications such as lighting, bilge pumps, and other on/off accessory controls.