Sea-Dog Toggle Switch 420105-1, SPDT Momentary On/Off/On, 15 Amp 12 Volt Panel Mount

The Sea-Dog 420105-1 is a panel-mount toggle switch built for marine electrical circuits that need a momentary contact position. It is configured as SPDT Momentary On/Off/On with 3 blade terminals, rated 15 amps at 12 volts. The housing is constructed of stamped brass, injection molded nylon, and polycarbonate, and the switch uses a locking ring with a lever seal plus a protruding cap nut to resist water penetration, making it suitable for helm panels, accessory switching, and other 12 volt DC circuits aboard a boat. It mounts through a panel opening sized to the switch's 3/8 inch and 1/2 inch dimensions, and installs with standard blade-terminal wire connections at the back of the switch. This model is easy to install and is intended as a direct, drop-in style toggle switch for panels already cut for this switch pattern. A matching waterproof cap (sold separately as 420479-1) is available for additional splash protection at the switch face. Note that this is the non-illuminating version; Sea-Dog also offers illuminating toggle switches in the same physical style that light up red in the ON position, which are different part numbers.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 420105-1
• Circuit Type: SPDT
• Switch Action: Momentary On/Off/On
• Terminals: 3 Blades
• Amperage Rating: 15 amps
• Voltage Rating: 12 volts DC
• Dimension A: 3/8 inch
• Dimension B: 1/2 inch
• Weight: 0.058 pounds
• Material: Stamped brass, injection molded nylon, and polycarbonate
• Mounting Type: Panel mount
• Contact Material: Brass
• Insulation Resistance: 100 megaohms
• Connector Type: Quick connect
• Number of Positions: 3
• Color/Finish: Brass
• UPC: 035514420839

Frequently Asked Questions

What is the circuit configuration of the Sea-Dog 420105-1 toggle switch? It is an SPDT (single pole, double throw) switch wired as Momentary On/Off/On, with 3 blade terminals for wiring connections.

What amperage and voltage is this switch rated for? The Sea-Dog 420105-1 is rated 15 amps at 12 volts DC, suitable for typical marine 12 volt accessory and switching circuits.

Is the 420105-1 toggle switch waterproof? The switch uses a locking ring with a lever seal and a protruding cap nut to resist water penetration at the panel. A separate waterproof cap (Sea-Dog 420479-1) is also available for additional protection at the toggle itself.

What material is the Sea-Dog 420105-1 made of? It is constructed of stamped brass, injection molded nylon, and polycarbonate, with brass contacts.

How much does this switch weigh? The Sea-Dog 420105-1 toggle switch weighs 0.058 pounds.

What are the mounting dimensions for panel installation? The 420105-1 has dimension A of 3/8 inch and dimension B of 1/2 inch for panel-mount installation.

How does the 420105-1 differ from Sea-Dog's illuminating toggle switches? The 420105-1 is a non-illuminating switch. Sea-Dog's illuminating toggle switches, such as 420111, 420113, and 420118, share the same physical style but light up red when in the ON position; those are separate part numbers.

What type of terminals does this switch use? The Sea-Dog 420105-1 uses 3 blade terminals with a quick connect style, allowing standard blade-terminal wire connectors to be used.

Is this switch a momentary or standard on/off switch? It is a momentary switch in the On/Off/On positions (Mom. On/Off/On), meaning one or both ON positions are spring-loaded to return to center when released, depending on wiring.

What is the insulation resistance rating of the 420105-1? The Sea-Dog 420105-1 has an insulation resistance rating of 100 megaohms.

What is the UPC for the Sea-Dog 420105-1 toggle switch? The UPC for this Sea-Dog toggle switch is 035514420839.