Sea-Dog Light Tip Toggle Switch 420125-1, SPDT Mom. On/Off/On, 15A 12V

The Sea-Dog 420125-1 is a Light Tip Toggle Switch built for marine electrical panels where a quick, at-a-glance status check matters. The toggle bat carries an illuminated tip that glows white when the switch is in the OFF position and red when it is ON, so the switch state is visible even in low light. It is configured as an SPDT circuit with a Momentary On/Off/On function and uses 5 blade terminals for wiring into a panel circuit.

Electrically, the switch is rated 15A at 12VDC, suiting it to typical 12-volt boat lighting, pump, and accessory circuits. To resist the wet, splash-prone environment of a boat, the switch incorporates a locking ring and a lever seal that guard against water penetration around the toggle shaft. Construction is stamped brass and injection molded nylon, with a polycarbonate toggle bat, giving the switch corrosion resistance along with the durability needed for repeated cycling.

Installation is straightforward: the switch fits panels up to 1/4 inch thick and requires a 15/32 inch mounting hole, and it can be panel mounted or surface mounted. It is a direct fit for builders and owners upgrading or replacing lighted toggle switches on helm panels, dashboards, and accessory panels.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 420125-1
• Switch Type: Toggle
• Circuit Function: SPDT Mom. On/Off/On
• Number of Blades: 5
• Amperage Rating: 15 amps
• Voltage Rating: 12 volts DC
• Mounting Hole Diameter: 15/32 inch
• Maximum Panel Thickness: 1/4 inch
• Mounting Type: Panel Mount or Surface Mount
• Terminal Type: Screw, Quick Connect
• Contact Type: Normally Open
• Insulation Resistance: 100 Megaohms
• Material: Stamped brass and injection molded nylon with polycarbonate toggle
• Contact Material: Brass
• Toggle Indicator: Illuminated tip, white when off, red when on
• Weight: 0.04 pounds
• UPC: 035514422611

Frequently Asked Questions

What circuit function does the Sea-Dog 420125-1 switch have? It is an SPDT switch wired as Momentary On/Off/On, meaning it springs back to the center OFF position from one of its momentary ON positions and holds in the other. The switch uses 5 blade terminals for this circuit.

What is the amp and voltage rating? The 420125-1 toggle switch is rated 15 amps at 12 volts DC, making it suitable for typical 12-volt boat lighting, pump, and accessory circuits.

How does the illuminated tip work? The toggle bat on the 420125-1 has a lighted tip that shows white when the switch is in the OFF position and red when it is switched ON, giving a quick visual status check on the panel.

What size mounting hole does this switch need? The 420125-1 requires a 15/32 inch mounting hole and fits panels up to 1/4 inch thick.

Can this switch be surface mounted instead of panel mounted? Yes, the Sea-Dog 420125-1 can be installed as either a panel mount or a surface mount switch.

What is the switch body made of? It is constructed of stamped brass and injection molded nylon, with a polycarbonate toggle bat, for corrosion resistance in a marine environment.

Is this toggle switch waterproof? The 420125-1 includes a locking ring and a lever seal designed to resist water penetration around the toggle, though it is not rated as fully submersible.

What terminal connection type does it use? The 420125-1 uses screw and quick connect terminals across its 5 blade terminals.

What is the contact type on this switch? The 420125-1 has normally open contacts as part of its SPDT Mom. On/Off/On configuration.

How much does the Sea-Dog 420125-1 switch weigh? It weighs 0.04 pounds.

What is the difference between the 420125-1 and the similar 420123-1 or 420124-1 switches? The 420125-1 is an SPDT Mom. On/Off/On switch with 5 blades, while the 420123-1 is a standard SPDT On/Off/On and the 420124-1 is an SPDT Mom. On/Off/Mom. On; the momentary behavior and terminal count differ between these part numbers.

What is the UPC for this part? The Sea-Dog 420125-1 Light Tip Toggle Switch carries UPC 035514422611.