Locking Receptacle, L21-20R, 20 A, 120/208V AC, Three Phase, 4 Pole, Surface Mount, Screw Terminals MPN:HBL2510SR

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Brand: HUbbell Wiring
Part #: HBL2510SR
UPC: 783585234984
SKU
510-G2205831
Regular Price $107.79 Special Price $76.99

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Locking Receptacle, L21-20R, 20 A, 120/208V AC, Three Phase, 4 Pole, Surface Mount, Screw Terminals

The HUBBELL 20A Locking Receptacle L21-20R is a reliable and secure solution for industrial indoor settings, rated for use with 120/208V AC three-phase power systems. Its twist-lock mechanism and impact-resistant PBT housing ensure a safe and durable connection, while the grounding design and corrosion-resistant properties provide peace of mind. Suitable for a range of applications, including manufacturing facilities, data centers, and commercial buildings, this receptacle is perfect for areas where high-power equipment is used. Its compact surface mount design makes it easy to install, and its CSA certification and UL listing ensure compliance with industry standards.

Top product features:

  • Twist-lock mechanism provides secure connection and disconnection of power
  • Accepts #14 to #8 AWG copper wire via screw terminals for easy installation
  • Operates from -40°F to 167°F (continuous up to 75°C) for reliable performance in a wide temperature range

Top product applications:

  • Industrial Control Panels
  • Heavy-Duty Machinery
  • Power Distribution Systems
  • The HUBBELL 20A Locking Receptacle L21-20R is a four-pole, five-wire device rated for use with 120/208V AC three-phase power systems. It features a twist-lock mechanism and is constructed from impact-modified PBT and Valox materials suitable for industrial indoor settings. Alignment arrows with lock/unlock symbols indicate locked or unlocked position, while the catalog number and voltage rating are visible during operation.



    Key Features of the HUBBELL 20A Locking Receptacle L21-20R:


    • NEMA Configuration: L21-20R, rated for 20 A at 120/208V AC three-phase

    • Poles/Wires: Four poles, five wires
    • grounded design

    • Connection Type: Twist-lock with straight orientation and polarized contacts

    • Wire Compatibility: Accepts #14 to #8 AWG copper wire via screw terminals

    • Material Construction: Impact-resistant PBT housing
    • includes brass contacts and springs
    • corrosion-resistant properties

    • Mounting Style: Surface mount
    • non-flanged single-gang configuration

    • Temperature Range: Operates from -40°F to 167°F (continuous up to 75°C)

    • NEMA Enclosure/IP Rating: NEMA Type 1 enclosure
    • IP20 rated for dry, indoor locations

    • Standards Compliance: CSA Certified C22.2 No.42, Federal Specification W-C-596, UL 498 listed



Additional Information

  • Country of Origin: US
  • Drop Ship Item: No
  • Blind Ship Eligible: No
  • LTL Freight Required: No
  • Lead Time: Ships in 1 days
  • Minimum Order Quantity: 1
  • Unit of Measure: EA
  • Package Length: 4.90
  • Package Width: 3.10
  • Package Height: 2.60
  • Package Weight: 0.50
Product info last updated on January 13, 2026 12:44pm UTC Category: Wiring Devices
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