The HUBBELL 20A Watertight Locking Connector (L21-20R) is a shrouded, industrial/commercial-grade connector suitable for use in industrial and commercial settings. It features a housing that is rated as watertight and impact resistant; includes an environmental seal that protects the connection during use. The device accommodates cord sizes from 0.350 to 1.150 inches and includes a closure cap for protection when not connected.



Key Features of the HUBBELL 20A Watertight Locking Connector:


  • Current/Voltage Rating: Rated for 20 A at 120/208V AC, three-phase operation

  • NEMA Configuration: L21-20R, with four poles and five wires

  • Enclosure Ratings: Meets NEMA Type 12, 4, and 4X; IP66 rated for moisture resistance

  • Material Construction: Impact modified PBT housing with Valox body; brass contacts; thermoplastic insulation

  • Cord Accommodation: Accepts cable diameters from 0.35 in to 1.15 in; maximum wire size of 8 AWG, minimum wire size of 16 AWG

  • Operating Temperature Range: -40°C to +75°C

  • Screw Terminals: Standard wiring style using stainless steel screws

  • Resistance Properties: Rated as watertight, moisture resistant, and impact resistant; UL94 V-0 flammability rating

  • Certifications: CSA Certified Type 4/4X/12; UL Listed standards compliance

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