Sea-Dog Replacement Screw-Top Fuse Holder, 15 Amp - 420503-1

The Sea-Dog 420503-1 is a replacement screw-top fuse holder built for onboard 12-volt circuits that use AGC-style fuses. It is the panel-mounted fuse holder component used with Sea-Dog bilge pump switch panels, giving you a factory-correct way to restore fuse protection on a panel without replacing the whole assembly. The fuse holder accepts AGC fuses (fuses not included) and is rated for 15 amps, matching the amperage rating of the panel it services.

Construction combines a stamped brass body with a molded bakelite housing, giving the holder corrosion resistance along with the mechanical durability needed in a marine electrical environment. Overall dimensions are 5.75 x 1.75 x 1 inches, and it is designed as a surface-mount, panel-through fitting sized at 3/8 inch x 1/2 inch for a clean panel installation. At 0.03 pounds it is a lightweight, purely functional component intended for direct swap-in replacement.

This fuse holder is sold as a replacement part and ships in a standard pack of 10 each from the manufacturer, reflecting its role as a commonly stocked service item for panel installers and boat owners maintaining existing Sea-Dog switch panel wiring.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 420503-1
• Product Type: Replacement Screw-Top Fuse Holder
• Fuse Type: AGC (fuse not included)
• Amperage Rating: 15 Amp
• Voltage: 12 Volts
• Material: Stamped brass and molded bakelite
• Dimensions: 5.75 x 1.75 x 1 inches
• Fitting Size: 3/8 inch x 1/2 inch
• Mounting Type: Surface Mount
• Weight: 0.03 pounds
• Standard Pack: 10 each
• UPC: 035514422970

Frequently Asked Questions

What fuse type does the Sea-Dog 420503-1 fuse holder accept? It accepts standard AGC-style fuses, which are not included with the fuse holder itself.

What is the amperage rating of this fuse holder? The 420503-1 fuse holder is rated for 15 amps.

What voltage system is the 420503-1 designed for? This fuse holder is designed for 12-volt marine electrical systems.

Is the Sea-Dog 420503-1 sold as a standalone replacement part? Yes, 420503-1 is a replacement screw-top fuse holder sold separately for servicing existing panels, and it ships in a standard pack of 10 each.

What is this fuse holder made of? The 420503-1 combines a stamped brass body with a molded bakelite housing for corrosion resistance and durability.

What are the dimensions of the Sea-Dog 420503-1? The fuse holder measures 5.75 x 1.75 x 1 inches overall, with a 3/8 inch x 1/2 inch panel fitting size.

How much does the 420503-1 fuse holder weigh? It weighs 0.03 pounds.

How does this fuse holder mount? The 420503-1 is a surface-mount fuse holder designed to install through a panel.

What is the UPC for the Sea-Dog 420503-1? The UPC for this fuse holder is 035514422970.

Does the 420503-1 fuse holder come with fuses? No, the 420503-1 fuse holder accepts AGC fuses, but fuses are not included.