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Yellow threaded marine boot, long elastomer body, IP56 rated

Hubbell Incorporated

Hubbell Incorporated HBL77CM15 Boot Yellow Threaded marine electronic

SKU CH-YWYP-NAQZT

A weatherproof elastomer boot provides IP56-rated moisture resistance for 50 A twist-lock connections

  • Product typeWiring Devices
  • Weatherproof IP56 rating protects against water jets
  • Moisture-resistant elastomer material withstands harsh marine environments
  • Threaded design ensures secure connection to Twist-Lock devices
  • 5 inch long boot provides extended strain relief
  • Rated for 50 amp current capacity handles high-power applications

Hubbell HBL77CM15 Weatherproof Boot

The Hubbell HBL77CM15 is a yellow elastomer boot designed to shield 50 A Twist-Lock devices in wet environments. It carries an IP56 rating for moisture resistance and measures 7.5 in overall length. Marine electricians and boat owners use it to maintain reliable connections on dockside power inlets and onboard distribution panels.

Suits 50 A Twist-Lock installations.

This boot fits 50 A Twist-Lock plugs and connectors that require a long, threaded weatherproof cover. Installations using different current ratings, non-threaded interfaces, or alternative locking styles will need a different accessory. Buyers seeking a boot for lower-amperage devices or for straight-blade connectors should look at other options.

Threaded IP56 seal for 50 A Twist-Lock devices

The single specification that determines compatibility is the threaded IP56-rated interface built for 50 A Twist-Lock hardware. Only devices matching that exact mounting style and current rating will seat correctly and maintain the moisture-resistant seal. Verify the plug or connector series before purchase.

How it compares

Measured against everything we stock in Boat Audio & Electronics, at today’s prices. Recalculated every night.

Price $40.99
Cheaper than about 64% of the 312 comparable items (median $69.49).

Specifications

Product
Brand nameHUBBELL WIRING DEVICE-KELLEMS
Product typeWiring Devices

Questions about this item

What amperage rating must the twist-lock device I already own carry to fit this 50 A boot?

The boot is rated for devices up to 50 A, so your twist-lock connector must also be a 50 A model for correct mating and sealing.

Will the IP56 seal on this yellow boot still protect my older 15 A twist-lock plug if I use an adapter?

The boot is specified for 50 A twist-lock devices; using it with a 15 A plug would leave gaps that defeat the IP56 moisture resistance.

How can I confirm the 7.5 in elastomer boot is seated properly after threading it onto my connector?

When fully threaded the boot should sit flush against the connector body with no visible gaps, and the yellow elastomer should compress evenly around the cable entry.

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