Sea-Dog 420218-1 Illuminating Contura Rocker Switch, On/Off/On DPDT, 12V 20A

The Sea-Dog 420218-1 is an illuminating Contura-style rocker switch built for marine electrical panels that need a compact, reliable On/Off/On control. Wired DPDT (double pole, double throw), this switch lets a single rocker control two separate circuits or reverse polarity applications from one panel cutout, making it a common choice for bilge pumps, navigation light switching, trim tabs, and other dual-circuit marine accessories. The switch is rated 12 Volts at 20 Amps and is ignition protected, meaning it is safe to install in engine compartments and other areas where spark-producing devices must meet marine ignition protection standards. It is also water resistant, carrying an IP54 ingress protection rating, so it holds up to spray and damp helm environments better than a standard household rocker switch.

Construction is stamped brass switching hardware combined with an injection molded nylon and polycarbonate housing and actuator, giving the switch corrosion resistance at the contacts along with a durable, UV- and impact-resistant body. The rocker measures 13/16 inch by 1-7/16 inch at the panel cutout, a standard Contura profile that fits common marine switch panel layouts. At 0.088 pounds, it is a lightweight, drop-in component for new panel builds or for replacing a worn or failed rocker switch of the same style.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 420218-1
• Switch Type: Rocker
• Switch Configuration: On/Off/On
• Contact Type: DPDT (double pole, double throw)
• Current Rating: 20 Amps
• Operating Voltage: 12 Volts
• Illumination: Illuminating, Contura style
• Ignition Protection: Ignition protected
• Water Resistance: Water resistant, IP54
• Material: Stamped brass, injection molded nylon and polycarbonate
• Dimensions: 13/16 inch x 1-7/16 inch
• Weight: 0.088 pounds
• Mounting Type: Panel mount
• Color: Black
• UPC: 035514421263

Frequently Asked Questions

What does On/Off/On DPDT mean on the Sea-Dog 420218-1? It means the 420218-1 rocker has three switch positions (on, off, on) and uses a double pole, double throw contact arrangement, so it can control two separate circuits or run one circuit in either of two directions from a single rocker.

Is the 420218-1 switch illuminated? Yes, the Sea-Dog 420218-1 is an illuminating Contura-style rocker switch, so the rocker lights up to show its status on a helm or accessory panel.

What voltage and amperage is this switch rated for? The 420218-1 is rated 12 Volts at 20 Amps, suitable for typical 12-volt marine DC circuits.

Is this switch safe to install near an engine? Yes, the Sea-Dog 420218-1 is ignition protected, which allows it to be mounted in engine compartments and other locations where ignition-protected components are required.

Will the 420218-1 hold up to water exposure? It is water resistant with an IP54 ingress protection rating, so the Sea-Dog 420218-1 is built to handle spray and damp conditions typical of a boat helm or panel.

What is the 420218-1 switch made of? The switch uses stamped brass internal contacts with an injection molded nylon and polycarbonate rocker and housing, a combination chosen for corrosion resistance and durability in a marine environment.

What size cutout does the 420218-1 need? The Sea-Dog 420218-1 rocker measures 13/16 inch by 1-7/16 inch, the standard Contura switch profile used on most marine panel layouts.

How much does the 420218-1 switch weigh? The Sea-Dog 420218-1 weighs 0.088 pounds.

What color is the 420218-1 rocker switch? The Sea-Dog 420218-1 rocker switch is black.

Can the 420218-1 replace a worn or failed rocker switch on my panel? Yes, the 420218-1 is a panel-mount Contura rocker switch designed to drop into a standard Contura cutout, making it a straightforward swap for a same-style illuminating On/Off/On DPDT switch.

What is the UPC for the Sea-Dog 420218-1? The UPC for the Sea-Dog 420218-1 illuminating rocker switch is 035514421263.