Sea-Dog 420111-1 Illuminating Toggle Switch, SPST On/Off, 15 Amp 12 Volt

The Sea-Dog 420111-1 is an illuminating toggle switch built for marine electrical panels where a quick visual confirmation of power status matters. The switch is an SPST design with a simple On/Off action, using 3 spade blade terminals for a fast, solderless connection. When switched to the ON position, the toggle illuminates red, giving an unmistakable indication at a glance that the circuit is live, which is especially useful at the helm or on a dash panel in low light.

Construction is stamped brass and injection molded nylon, with a polycarbonate toggle lever. A locking ring and lever seal are built in to resist water penetration, making the switch suitable for the wet, vibration-prone environment found on boats. The switch is rated 15 Amps at 12 Volts DC, and terminates with 1/4 inch spade connectors for easy wiring.

For installation, the 420111-1 fits panels up to 1/4 inch thick and requires a 15/32 inch mounting hole. It is designed as a direct panel-mount replacement switch for helm stations, accessory circuits, lighting, bilge pumps, and other 12 volt DC onboard systems.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 420111-1
• Product Type: Illuminating Toggle Switch
• Circuit Type: SPST
• Switch Action: On/Off
• Illumination: Illuminates red in the ON position
• Terminals: 3 spade blades, 1/4 inch
• Amperage Rating: 15 Amps
• Voltage Rating: 12 Volts DC
• Material: Stamped brass, injection molded nylon, polycarbonate toggle
• Water Resistance Features: Locking ring and lever seal
• Maximum Panel Thickness: 1/4 inch
• Required Mounting Hole: 15/32 inch
• Dimension A: 3/8 inch
• Dimension B: 1/2 inch
• Weight: 0.06 pounds

Fitment

Universal panel-mount toggle switch for 12 volt DC marine electrical systems; not specific to a single engine, make, or model.

Replaces (OEM)

• 702378

Frequently Asked Questions

What circuit type is the Sea-Dog 420111-1 toggle switch? It is an SPST (single pole, single throw) switch with a simple On/Off action, part number 420111-1.

Does this switch light up? Yes, the 420111-1 illuminates red when it is switched to the ON position, giving a clear visual indication that the circuit is live.

What is the amperage and voltage rating? The Sea-Dog 420111-1 is rated 15 Amps at 12 Volts DC.

What panel thickness and mounting hole does it require? The switch fits panels up to 1/4 inch thick and requires a 15/32 inch mounting hole.

What terminals does the 420111-1 use? It has 3 spade blade terminals sized at 1/4 inch, allowing quick solderless wiring connections.

Is this switch water resistant? The 420111-1 has a locking ring and lever seal designed to resist water penetration, suiting it to marine panel environments.

What materials is the switch made from? Construction is stamped brass and injection molded nylon, with a polycarbonate toggle lever.

How much does the 420111-1 weigh? The Sea-Dog 420111-1 toggle switch weighs 0.06 pounds.

Is there an OEM equivalent part number for the 420111-1? Yes, part number 702378 is listed as an equivalent for the Sea-Dog 420111-1.

Will this switch fit a specific boat make or engine model? The 420111-1 is a universal panel-mount toggle switch for 12 volt DC marine electrical systems and is not limited to a specific make, model, or engine.

What is the difference between the 420111-1 and the DPDT or SPDT versions Sea-Dog makes? The 420111-1 is the SPST On/Off version; Sea-Dog also offers a DPDT On/Off/On version (420113-1) and an SPDT On/Off/On version (420118-1) in the same illuminating toggle switch line, each with a different terminal count.

What comes in the box with the 420111-1? Each Sea-Dog 420111-1 order includes one illuminating SPST toggle switch.