Cooper Wiring Devices AH Indus...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$61.31
Cooper Wiring Devices AH Industrial Toggle Switch, 20A 120/277V, Single-Pole

Cooper Wiring Devices AH Industrial Toggle Switch, 20A 120/277V, Single-Pole

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Model: AH1221GY
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$61.31
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Cooper Wiring Devices AH Industrial Toggle Switch, 20A 120/277V, Single-Pole

The Cooper Wiring Devices AH Industrial Toggle Switch is a heavy-duty, single-pole switch built for demanding commercial and industrial electrical installations. Rated 20A at 120/277V, this toggle switch features a durable polycarbonate housing paired with a brass terminal enclosure for long-term reliability. With a screw connector type and back-and-side wiring method, it accommodates #14-10 AWG wire for flexible, code-compliant installation in industrial-grade applications. This listing is available in a choice of housing colors — Black, Gray, Ivory, and Red — so electrical professionals can match device color to jobsite standards while keeping the same 20A, 120/277V performance across every option.

Key Features

  • Electrical Rating: 20A at 120/277V for demanding industrial circuits.
  • Single-Pole Configuration: Straightforward on/off control for dedicated circuits.
  • Screw Connector Type: Back and side wiring method for flexible installation options.
  • Allowable Wire Size: Accepts #14-10 AWG conductors for a range of branch-circuit applications.
  • Durable Construction: Polycarbonate housing resists impact and wear in industrial environments.
  • Brass Terminal Enclosure: Supports secure, long-lasting electrical connections.
  • Terminal Dimension: 0.031 in terminals for consistent, reliable contact.
  • Color Options: Available in Black, Gray, Ivory, and Red to suit device-color specifications across a facility.

Technical Specifications

  • Amperage Rating: 20A
  • Product Width: 1.005 inches
  • Product Height: 4.19 inches
  • Connector Type: Screw
  • Wiring Method: Back and side
  • Application: Industrial
  • Type: Toggle switch
  • Terminal Enclosure Material: Brass
  • Material: Polycarbonate
  • Voltage Rating: 120/277V
  • Number Of Poles: Single-pole
  • Allowable Wire Size: #14-10 AWG
  • Terminals: 0.031 in
  • Color Options: Black, Gray, Ivory, Red

Typical Applications

  • Industrial Facilities and Manufacturing Plants
  • Commercial and Industrial Electrical Installations
  • Machine Shops and Equipment Control Circuits
  • Panelboard and Load Center Wiring
  • Heavy-Duty Lighting and Motor Control Switching
  • Renovation and New Construction Electrical Work

Why Cooper Wiring Devices?

Cooper Wiring Devices builds this industrial toggle switch with a durable polycarbonate housing and a brass terminal enclosure, giving electrical professionals a dependable, code-compliant switching solution for demanding 20A, 120/277V circuits. The screw connector design with back-and-side wiring flexibility, combined with support for #14-10 AWG conductors, makes it a practical choice for industrial installations where reliable, long-term performance is essential. With four housing colors — Black, Gray, Ivory, and Red — available on the same rugged 20A, 120/277V platform, contractors can standardize on Cooper devices across a facility without sacrificing consistency in performance or construction quality.

Manufacturer Resources

Product Specs

Connector Type:
Screw
Wiring Method:
Back and side
Application:
Industrial
Product Type:
Toggle Switch
Terminal Enclosure Material T:
Brass
Voltage Rating:
120/277V
Number Of Poles:
Single-pole
Allowable Wire Size:
#14-10 AWG
Amperage Rating:
20A
Terminals:
0.031 in
Connection Type:
Screw
Product Material:
Polycarbonate
Department:
Electrical
Product Group:
Wiring Devices
Product Width:
1.005 inches
Product Height:
4.19 inches
Terminal Type:
0.031 In
Configuration:
Single-Pole
Product Subgroup:
Toggle Switches

Cooper Wiring Devices AH1221GY – Frequently Asked Questions

1) Will a Cooper AH industrial toggle switch work on a 277V lighting circuit as well as 120V?
Yes. The Cooper Wiring Devices AH industrial toggle switch is rated 20A at 120/277V, so the same device covers 120V branch circuits and 277V commercial lighting runs. That dual rating is why it gets specified in plants and warehouses where lighting is fed at 277V and receptacle or control circuits are at 120V, instead of stocking two different switches.
2) What wire size can I land on the Cooper AH toggle switch, and can I feed through it?
Terminals accept #14 through #10 AWG copper, which covers 15A and 20A branch circuits and gives you room for a 10 AWG home run on a long lighting feed. It uses screw terminals with back and side wiring, so you can either side-wire under the screws or bring the conductor in the back, whichever fits the box depth you are working in.
3) Is the Cooper AH toggle switch a single-pole or a three-way?
It is a single-pole switch, meaning on/off control of a load from one location. If the opening you are replacing has travelers and is switched from two doorways, a single-pole device will not do that job and you need a three-way instead.
4) Is this Cooper toggle switch tough enough for a machine shop or plant floor?
That is what it is built for. The body is polycarbonate, which takes impact and abrasion better than the thermoplastic used on residential-grade devices, and the terminal enclosure is brass for connections that stay tight under vibration and repeated cycling. Cooper classes it as an industrial-application device rather than a spec-grade or residential one.
5) What colors does the Cooper AH industrial toggle switch come in?
Four: gray (AH1221GY), red (AH1221RD), ivory (AH1223V) and black (AH1224BK). Red is the usual pick when a facility color-codes emergency or standby circuits so an operator can find the right switch fast; gray and black are the common general-purpose industrial choices, and ivory matches older device fleets already in the building.
6) Can I use this switch to control a motor load?
It is a 20A general-use snap switch rated 120/277V, single-pole, and Cooper lists heavy-duty lighting and equipment control circuits among its applications. For any motor, size the switch to the motor's full-load amps and horsepower requirement per the NEC before you commit it to that duty, since a general-use switch is not a motor controller by default.
7) Do the terminal screws on this Cooper switch take a standard screwdriver, and are the terminals back-wire or push-in?
They are screw terminals with 0.031 inch terminal contacts, wired either from the back or under the side screws. These are clamp-style screw connections, not push-in stab connections, so the conductor is captured under a screw and stays secure without the reliability problems electricians associate with back-stab devices.
How fast can I get the Cooper Wiring Devices AH1221GY delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Cooper Wiring Devices AH1221GY come with a warranty?
Absolutely. The Cooper Wiring Devices AH1221GY is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Cooper Wiring Devices AH1221GY?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Cooper Wiring Devices AH1221GY from ZenSupply?
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