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Stainless steel barrel-key locking wall switch, single pole, 20A 120/277V

Hubbell Incorporated

Hubbell Incorporated HBL1221RKL 20A 120/277V Barrel Key Locking Switch

SKU CH-53HK-ZSXKE

A 20 A single-pole wall switch with barrel-key locking for 120/277 V AC circuits

  • Color/FinishStainless Steel
  • Color MappingSilver
  • TypeLight Switch
  • Barrel-key locking prevents unauthorised operation
  • Single-pole 20 A switching handles 120/277 V AC loads
  • Back and side wiring with 14–10 AWG screw terminals speeds installation
  • Impact-resistant stainless-steel body withstands tough environments
  • UL Listed for code-compliant safety assurance

Single-pole locking switch

The Hubbell HBL1221RKL is a 20 A single-pole wall switch rated for 120/277 V AC. A barrel-key locking mechanism prevents unauthorised operation. Stainless-steel construction provides impact resistance for demanding commercial or institutional environments.

Back and side wiring

Screw terminals accept solid or stranded conductors from 14 AWG to 10 AWG, allowing back-wire or side-wire installation. The maintained-action toggle delivers a 1-1/2 hp motor rating on the same circuit. UL listing confirms compliance with applicable safety standards.

High-abuse areas

Designed for corridors, schools and public facilities where switch tampering is a concern. The key-lock function secures lighting or fan circuits without removing power at the breaker. Not suited for three-way or four-way switching layouts, or for loads exceeding the 20 A and 1-1/2 hp ratings.

Highlights

  • Barrel-key locking prevents unauthorised operation
  • Single-pole 20 A switching handles 120/277 V AC loads
  • Back and side wiring with 14–10 AWG screw terminals speeds installation
  • Impact-resistant stainless-steel body withstands tough environments
  • UL Listed for code-compliant safety assurance

Specifications

BrandHubbell Wiring Device-Kellems
Color/FinishStainless Steel
Color MappingSilver
TypeLight Switch

Questions about this item

Will the HBL1221RKL fit a standard US wall box and cover plate?

The switch is a single-pole unit rated 20 A at 120/277 V AC with screw terminals that accept 14 to 10 AWG wire, so it mounts in a standard wall box.

What is the wiring step most often missed when installing this locking switch?

The barrel key must be turned to the unlocked position before wiring; otherwise the mechanism stays locked and the switch cannot be actuated.

Which parts will need replacement after extended use on a 20 A circuit?

The switch is UL Listed and impact resistant with no user-serviceable parts; only the barrel key or the entire switch would be replaced if the locking mechanism wears or the contacts degrade.

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