Sea-Dog 420249-1 Large Rocker Switch, SPDT Momentary On/Off/Momentary On, 15 Amp 12 Volt

The Sea-Dog 420249-1 is a large marine rocker switch built for momentary control circuits, such as trim tabs, windlasses, and other functions that should only run while the switch is actively held. It is wired SPDT with a Momentary On/Off/Momentary On action across 3 blades, so the circuit engages only while the rocker is pressed to either side and returns to off when released. The switch is rated 15 Amps at 12 Volts DC and is ignition protected and water resistant, making it suitable for helm panels and other wet marine environments.

Construction is durable injection molded nylon and stamped brass, with the housing also incorporating polycarbonate components, and wiring terminates in standard 1/4 inch blade terminals for straightforward connection. The switch snaps into a standard 7/8 inch x 1-7/16 inch panel slot for a clean, secure, no-tool installation into any panel cut to that size. As a large-format rocker switch, it offers a bigger actuation surface than smaller toggle or mini-rocker styles, making it easier to operate with gloved or wet hands at the helm.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 420249-1
• Switch Type: Rocker Switch
• Circuit Type: SPDT, Momentary On/Off/Momentary On
• Number of Blades: 3
• Current Rating: 15 Amps
• Operating Voltage: 12 Volts DC
• Panel Cutout Size: 7/8 inch x 1-7/16 inch
• Terminal Type: 1/4 inch blade terminals
• Material: Brass, Nylon, Polycarbonate
• Item Dimensions: 8.75 x 3.88 x 1.25 inches
• Ingress Protection Rating: IP54
• Ignition Protected: Yes
• Weight: 0.066 pounds
• UPC: 035514422949

Frequently Asked Questions

What does Momentary On/Off/Momentary On mean on the Sea-Dog 420249-1? It means the 420249-1 only completes its circuit while the rocker is actively pressed to one side or the other; release the rocker and it springs back to the off position, rather than staying latched like a standard on/off switch.

What size panel cutout does this switch need? The Sea-Dog 420249-1 snaps into a standard 7/8 inch x 1-7/16 inch panel slot with no additional tools or hardware required.

How many amps and volts is the 420249-1 rated for? It is rated 15 Amps at 12 Volts DC, suitable for typical 12 volt marine accessory circuits.

Is the Sea-Dog 420249-1 waterproof? The switch is ignition protected and water resistant, carrying an IP54 ingress protection rating, which makes it suitable for exposed helm and dash locations on a boat.

What is the 420249-1 rocker switch made of? Construction is durable injection molded nylon and stamped brass, with polycarbonate used in the housing, giving it corrosion resistance for marine use.

What terminals does this switch use for wiring? The 420249-1 wires up using standard 1/4 inch blade terminals, common connectors that most marine wiring harnesses and crimp connectors already use.

How is the 420249-1 different from the Sea-Dog 420248-1? Both are SPDT 3-blade rocker switches rated 15 Amps at 12 Volts and sized for the same 7/8 inch x 1-7/16 inch panel slot, but the 420248-1 is a standard On/Off/On switch that stays in position, while the 420249-1 is a momentary switch that only holds a position while pressed.

How much does the 420249-1 rocker switch weigh? The Sea-Dog 420249-1 weighs 0.066 pounds.

What are the overall dimensions of the 420249-1 switch? The 420249-1 measures 8.75 x 3.88 x 1.25 inches overall.

Is installation of the 420249-1 straightforward for a DIY boat owner? Yes, the switch is designed to snap directly into a standard 7/8 inch x 1-7/16 inch panel slot and connect via 1/4 inch blade terminals, so no special tools are needed beyond a properly cut panel opening.

What circuit type is the 420249-1 rocker switch? It is an SPDT (single pole, double throw) switch with 3 blades, wired for Momentary On/Off/Momentary On operation.

Is the Sea-Dog 420249-1 a genuine Sea-Dog part? Yes, the 420249-1 is a genuine Sea-Dog large rocker switch, part number 420249-1.