Sea-Dog Light Tip Toggle Switch 420123-1, SPDT On/Off/On, 15 Amp 12 Volt Marine Switch

The Sea-Dog Light Tip Toggle Switch, part number 420123-1, is a marine-grade SPDT On/Off/On toggle switch built for 12-volt boat wiring and helm panels. It uses a lighted toggle tip that glows white when the switch is in the OFF position and turns red when switched ON, giving an instant visual indication of circuit status even in low light or at night. The switch is constructed of stamped brass and injection molded nylon with a polycarbonate toggle lever, materials chosen to hold up in the marine environment. A locking ring and lever seal help resist water penetration around the mounting point, an important feature for switches mounted on exposed panels or near the helm where spray is common.

This is an SPDT (single pole, double throw) On/Off/On switch with 5 blade terminals, rated 15 Amps at 12 Volts DC. It installs through a 15/32 inch mounting hole and fits panels up to 1/4 inch thick, making it a straightforward retrofit or new-install switch for dash panels, accessory circuits, bilge pumps, lighting, and other 12-volt boat systems wired through a standard toggle-style panel cutout.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 420123-1
• Circuit/Action: SPDT On/Off/On
• Terminals: 5 Blades
• Amperage: 15 Amps
• Voltage: 12 Volts DC
• Mounting Hole (A): 3/8 inch
• Panel Cutout/Bushing (B): 1/2 inch
• Maximum Panel Thickness: 1/4 inch
• Mounting Hole Diameter: 15/32 inch
• Material: Stamped brass and injection molded nylon with polycarbonate toggle
• Indicator: Lighted tip, white when OFF, red when ON
• Sealing: Locking ring and lever seal resist water penetration
• Weight: 0.062 pounds

Frequently Asked Questions

What does the light on this switch indicate? On the Sea-Dog 420123-1 toggle switch, the toggle tip glows white when the switch is in the OFF position and turns red when the switch is ON, giving a quick visual check of circuit status.

Is the 420123-1 an SPDT or SPST switch? It is an SPDT (single pole, double throw) switch with an On/Off/On circuit action and 5 blade terminals.

What amperage and voltage is this switch rated for? The 420123-1 is rated 15 Amps at 12 Volts DC, suitable for standard 12-volt marine circuits.

What size mounting hole do I need to install this switch? A 15/32 inch mounting hole is required to install the Sea-Dog 420123-1 toggle switch.

What is the maximum panel thickness this switch will fit? The switch fits panels up to 1/4 inch thick.

What is the switch body made of? The 420123-1 is constructed of stamped brass and injection molded nylon, with a polycarbonate toggle lever.

Is this toggle switch water resistant? Yes, a locking ring and lever seal on the 420123-1 help resist water penetration at the panel mount, which suits it for exposed helm or deck panel locations.

How much does this switch weigh? The Sea-Dog 420123-1 toggle switch weighs 0.062 pounds.

How many terminals does this switch have? It has 5 blade terminals, matching its SPDT On/Off/On circuit configuration.

What is the difference between the 420123-1 and Sea-Dog's other lighted toggle switches in this series? The 420123-1 is the SPDT On/Off/On version; other part numbers in Sea-Dog's Light Tip series cover different circuit actions such as SPST On/Off, SPST momentary, and DPDT configurations, each with its own part number.

Can this switch be used for accessory or bilge pump wiring on a boat? Yes, rated at 15 Amps and 12 Volts DC, the 420123-1 is sized for typical 12-volt boat accessory circuits wired through a standard toggle-style panel cutout.