Sea-Dog Light Tip Toggle Switch 420121-1, SPST On/Off, 15 Amp 12 Volt

The Sea-Dog Light Tip Toggle Switch is an SPST On/Off toggle switch built for marine electrical panels where visibility at the helm matters. The toggle bat is lighted, glowing white when the switch is in the OFF position and red when switched ON, so the operator can identify circuit status at a glance even in low light. Construction is stamped brass and injection molded nylon with a polycarbonate toggle, and the switch uses a locking ring with a lever seal to resist water penetration, making it suitable for boat helms, dashboards, and other panel applications exposed to moisture and spray.

This switch is rated 15 Amps at 12 Volts and terminates on 4 quick-connect blade terminals for straightforward wiring. It mounts in a 15/32 inch hole and fits panels up to 1/4 inch thick, with an overall footprint of 3/8 inch by 1/2 inch. Installation is a simple drop-in through the panel cutout, secured with the included locking ring. The 420121-1 is the SPST On/Off version within the Sea-Dog Light Tip Toggle Switch line, which also includes momentary and SPDT/DPDT circuit variants for different switching needs.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 420121-1
• Circuit Type: SPST On/Off
• Terminals: 4 Blades
• Amperage Rating: 15 Amps
• Voltage Rating: 12 Volts DC
• Dimension A: 3/8 inch
• Dimension B: 1/2 inch
• Weight: 0.062 pounds
• Material: Stamped Brass/Injection Molded Nylon/Polycarbonate
• Mounting Hole Size: 15/32 inch
• Maximum Panel Thickness: 1/4 inch
• Toggle Light Color (Off): White
• Toggle Light Color (On): Red
• UPC: 035514420006

Frequently Asked Questions

What circuit type is the Sea-Dog 420121-1? The 420121-1 is an SPST On/Off switch, meaning it is a simple single-pole single-throw toggle that opens or closes one circuit.

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

Why does the toggle light up different colors? The lighted tip on the 420121-1 glows white when the switch is in the OFF position and red when it is switched ON, giving a quick visual check of circuit status.

What is the mounting hole size for this switch? The Sea-Dog 420121-1 requires a 15/32 inch mounting hole and fits panels up to 1/4 inch thick.

What are the physical dimensions of the switch? The 420121-1 measures 3/8 inch by 1/2 inch and weighs 0.062 pounds.

What is the switch made of? It is constructed of stamped brass and injection molded nylon, with a polycarbonate toggle bat.

Is this switch water resistant? The 420121-1 uses a locking ring and lever seal designed to resist water penetration, making it suitable for marine panel and helm applications.

How many terminals does this switch have? The Sea-Dog 420121-1 has 4 blade terminals for quick-connect wiring.

How is the 420121-1 installed? It installs through a 15/32 inch panel cutout and is secured in place with its locking ring, making for straightforward panel mounting.

How does the 420121-1 differ from other switches in the Sea-Dog Light Tip line? The 420121-1 is the SPST On/Off version; the same line also offers momentary On/Off, SPDT On/Off/On, and DPDT circuit variants with different terminal counts and functions.

What is the UPC for the Sea-Dog 420121-1? The UPC for the Sea-Dog Light Tip Toggle Switch, part number 420121-1, is 035514420006.