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Black nylon flush-mount dimmer switch with screw terminals

Hubbell Incorporated

Hubbell Incorporated H320R 20 A 250V AC dimmer switch

SKU CH-MQHW-5MAS6

A 20 A, 250 V AC panel receptacle with a black nylon housing, screw terminals, and CSA/UL certification

  • TypeLight Switch
  • Color/FinishBlack
  • Color MappingBlack
  • Rated for 20 A at 250 V AC for heavy-duty circuits
  • Impact-resistant nylon housing protects against daily wear
  • UL and CSA certified for code-compliant installations
  • Flush-mount single-gang design fits standard wall boxes
  • Screw-terminal wiring with back-wire option speeds installation

Industrial 20 A receptacle

The Hubbell H320R is a single-gang, two-pole receptacle rated for 20 A at 250 V AC. Its black nylon housing is impact-resistant and carries a NEMA 1 enclosure rating. The device mounts flush and uses screw-terminal connections for back wiring. It is suited for commercial or industrial power distribution where a grounded, polarized outlet is required.

Circuit limits and safety ratings

The receptacle handles 16 A or 20 A circuits on single-phase supplies. It is not GFCI or AFCI protected, so downstream protection must be provided separately if required by code. Certifications include UL file E2186 and CSA certificate 17337, confirming compliance with North American safety standards for general-purpose receptacles.

Installation checks before ordering

Verify that the mounting box accepts a flush, single-gang device and that the circuit breaker matches the 20 A rating. Confirm the supply is 250 V AC single-phase and that three-wire back wiring with screw terminals suits your installation method. The lack of an included cover means a compatible wall plate must be sourced separately.

Highlights

  • Rated for 20 A at 250 V AC for heavy-duty circuits
  • Impact-resistant nylon housing protects against daily wear
  • UL and CSA certified for code-compliant installations
  • Flush-mount single-gang design fits standard wall boxes
  • Screw-terminal wiring with back-wire option speeds installation

Specifications

TypeLight Switch
BrandHUBBELL WIRING DEVICE-KELLEMS
Color/FinishBlack
Color MappingBlack

Questions about this item

Should I choose the 16 A or 20 A rating for my circuit?

The receptacle is rated for both 16 A and 20 A at 250 V AC; match the rating to the branch-circuit breaker protecting the wiring.

What does the 250 V AC rating mean when the switch is installed?

It indicates the maximum line-to-line voltage the device is designed to switch safely in a single-phase AC circuit.

Which NEMA enclosure rating applies and what does it limit?

The unit carries a NEMA 1 rating, meaning it is intended for indoor use where it is not exposed to dripping water or dust.

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