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Gray toggle wall switch with single lever and screw terminals

Hubbell Incorporated

Hubbell Incorporated HBL1557GY 20A 120/277V Toggle Switch Gray

SKU CH-ZS64-YRYAY

A 20 A toggle switch rated 120/277 V AC with momentary single-pole/double-throw action and screw terminals for 14–10 AWG wire

  • Color/FinishGray
  • Color MappingGray
  • TypeLight Switch
  • 20 A rating handles heavy-duty lighting loads
  • 120/277 V AC compatibility suits commercial and industrial circuits
  • Single-pole/double-throw momentary action enables flexible control wiring
  • Shatter- and crack-resistant body withstands impact in tough environments
  • Back- and side-wiring with 14–10 AWG screw terminals simplifies installation

Product Identity

The Hubbell HBL1557GY is a gray toggle switch rated for 20 amps at 120/277 volts AC. It suits commercial and industrial lighting circuits that require a single-pole, double-throw momentary action. The device accepts 14 to 10 AWG conductors via back and side screw terminals. UL listing confirms compliance with applicable safety standards.

Sustained Operation

Shatter and crack resistant construction withstands repeated actuation in high-traffic areas. The 1 hp horsepower rating supports motor loads such as fans without contact degradation over time. Impact resistant materials protect the mechanism from physical abuse in demanding environments. Screw terminal connections maintain secure conductivity through thermal cycling.

Installation Checklist

Verify the circuit voltage matches the 120/277 V AC rating before wiring. Confirm the electrical box depth accommodates the switch body and wiring method. Ensure conductors fall within the 14 to 10 AWG range for proper terminal grip. Check local code for any additional requirements on momentary switches in the intended application.

Highlights

  • 20 A rating handles heavy-duty lighting loads
  • 120/277 V AC compatibility suits commercial and industrial circuits
  • Single-pole/double-throw momentary action enables flexible control wiring
  • Shatter- and crack-resistant body withstands impact in tough environments
  • Back- and side-wiring with 14–10 AWG screw terminals simplifies installation

Specifications

BrandHubbell Wiring Device-Kellems
Color/FinishGray
Color MappingGray
TypeLight Switch

Questions about this item

Does the toggle generate any audible hum or heat when switching a 20 A load continuously?

The switch is rated for 20 A at 120/277 V AC with a 1 hp motor rating; normal operation produces no audible hum and only minimal warmth.

What wiring must already be in the box for the back and side screw terminals to accept the conductors?

Solid or stranded copper wire between 14 AWG and 10 AWG is required for the back-wire and side-wire screw terminals.

Will this single-pole double-throw toggle fit in a standard wall box beside an older 15 A decorator switch?

Yes, it mounts in a standard single-gang box and the gray toggle profile aligns with typical decorator openings.

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