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White male single-pole connector with threaded stud terminal

Hubbell Incorporated

Hubbell Incorporated HBLMRSCW Male Connector White 4/0 Stud electrical box

SKU CH-2NCF-99JCY

A male single-pole connector for 400 A, 600 V AC circuits with threaded stud terminal accepting #4 to 4/0 AWG wire

  • TypeSingle Pole Devices
  • Rated up to 400 A for high-power circuits
  • Handles #4 AWG to 4/0 AWG conductors
  • Threaded stud terminal for secure mounting
  • Thermoplastic elastomer housing resists indoor environments
  • Meets NEMA 12, 3R, 4X when installed correctly

High-Ampacity Male Connector

The Hubbell HBLMRSCW is a single-pole male connector rated for up to 400 A at 600 V AC or 250 V DC. It accepts conductor sizes from #4 AWG to 4/0 AWG and features a white thermoplastic elastomer housing with brass contacts. The device is listed to UL 1691 and meets NEC requirements for high-current power distribution.

Series 16 Compatibility and Mounting

This connector is designed for use with Series 16 devices and uses a threaded stud terminal for secure cable termination. A threaded hole mounting style is provided and screw mounting hardware is included for panel installation. The housing is rated for NEMA Type 12, 3R and 4X environments when installed correctly, making it suitable for indoor or protected outdoor locations.

Sustained Load Performance

The connector carries a continuous rating of 300 A to 400 A AC/DC, allowing it to handle prolonged high-current demand without derating. Brass contacts maintain low resistance under steady thermal load while the elastomer housing resists degradation from heat and environmental exposure. The UL 1691 listing confirms compliance with safety standards for sustained operation in demanding distribution systems.

Highlights

  • Rated up to 400 A for high-power circuits
  • Handles #4 AWG to 4/0 AWG conductors
  • Threaded stud terminal for secure mounting
  • Thermoplastic elastomer housing resists indoor environments
  • Meets NEMA 12, 3R, 4X when installed correctly

Specifications

BrandHUBBELL
TypeSingle Pole Devices

Questions about this item

Will the 400 A rating hold during continuous all-day loading?

The connector is rated 300/400 A AC/DC, so the 400 A figure applies to the conditions defined in the applicable UL 1691 and NEC listings.

Does the housing get hot or make noise when carrying full load for hours?

The thermoplastic elastomer housing and brass contacts are passive components; they generate no noise and their temperature rise is governed by the 300/400 A rating and the installation environment.

What mating device must I already have to complete the connection?

This male connector is designed for Series 16 single-pole devices, so you need the matching Series 16 female receptacle to make the circuit.

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