Marinco 121A Shore Power Pigtail Adapter, 50 Amp 125/250V to 30 Amp 125V

The Marinco 121A is a shore power pigtail adapter that lets you connect a 50 Amp 125/250 Volt dockside power source to a boat equipped with a 30 Amp 125 Volt shore power inlet. One end is a 50 Amp 125/250V locking male plug for the dock-side receptacle; the other end is a 30 Amp 125V locking female connector with a sealing collar system for the boat-side inlet or equipment. This lets boaters with a 30 Amp shore power system draw from a 50 Amp dock pedestal without rewiring the boat's shore power inlet.

The adapter is fully molded and finished in yellow for high visibility on deck or dock. It includes Marinco's sealing collar system and covers so the connection stays protected in wet locations, an LED power indicator so you can confirm the connection is live at a glance, and a contoured grip body with a thumbprint ground blade locator to make correct orientation easy to find by feel, including in low light. The adapter has a 5-prong power cord configuration, a single output, and is rated for 3750 watts.

Specifications

• Brand: Marinco
• Manufacturer Part Number: 121A
• Category: Shore Power Adapters
• Configuration: 50 Amp 125/250 Volt male to 30 Amp 125 Volt female
• Connector Gender: Male-to-Female
• Voltage: 125 Volts
• Amperage: 30 Amps
• Wattage: 3750 watts
• Number of Outlets: 1
• Power Cord Prong Count: 5
• Color: Yellow
• Water Resistance Level: Water Resistant
• Length: 12 inches
• Weight: 2.75 pounds
• UPC: 093344010507

Frequently Asked Questions

What does the Marinco 121A adapter connect? The Marinco 121A connects a 50 Amp 125/250 Volt dockside shore power receptacle to a boat with a 30 Amp 125 Volt shore power inlet, letting a boat wired for 30 Amp service plug into a 50 Amp dock pedestal.

Which end plugs into the dock and which end plugs into the boat? On the 121A, the 50 Amp 125/250 Volt locking connector is the male dock-side plug, and the 30 Amp 125 Volt locking connector with the sealing collar is the female boat-side connector.

Is the 121A adapter rated for outdoor or wet use? Yes, the 121A is fully molded with Marinco's sealing collar system and covers, making it suitable for use in wet dockside locations.

How can I tell if the adapter is properly connected? The Marinco 121A has a built-in LED power indicator that lights up to confirm the connection is receiving power.

How long is the Marinco 121A pigtail adapter? The 121A measures 12 inches in length.

How much does the 121A adapter weigh? The Marinco 121A weighs 2.75 pounds.

What wattage is the 121A adapter rated for? This adapter is rated for 3750 watts at 30 Amps, 125 Volts.

What color is the Marinco 121A? The 121A is finished in yellow for visibility on deck or at the dock.

Does the 121A have a locking mechanism to keep it from disconnecting? Yes, both ends of the 121A are locking connectors, with the boat-side 30 Amp connector also featuring a sealing collar system.

How many prongs does the power cord on the 121A have? The Marinco 121A pigtail has a 5-prong power cord configuration.

Does the 121A include any features to help with orientation when plugging in? Yes, the 121A has a contoured grip and a thumbprint ground blade locator to help you find the correct plug orientation, including in low light.

Is the Marinco 121A a genuine Marinco product? Yes, the 121A is manufactured by Marinco and carries the Marinco brand and part number 121A.