Leviton Extra Heavy-Duty Industrial Specification Grade SPST Toggle Switch
The Leviton Extra Heavy-Duty Industrial Specification Grade SPST Toggle Switch is engineered for demanding commercial and industrial electrical systems where dependable, high-frequency switching performance is required. Rated for 120/277-Volt AC service at 20 Amps, this single-pole (SPST), 1-pole toggle switch delivers the extra heavy-duty, industrial/specification grade construction that professional electricians rely on for consistent, long-term operation. Its rugged build makes it a solid choice for lighting circuits, motor control, and general-purpose switching applications where standard-grade devices fall short.
Key Features
- Electrical Rating: Rated 120/277-Volt AC at 20 Amps for reliable performance across common commercial and industrial circuits.
- Switch Configuration: SPST (Single-Pole, Single-Throw), 1-pole toggle design for straightforward on/off control of a single circuit.
- Extra Heavy-Duty Construction: Built to extra heavy-duty, industrial/specification grade standards for use in high-traffic, high-cycle switching environments.
- Toggle Actuator: Positive-feel toggle handle designed for repeated, high-frequency operation without loss of switching integrity.
- Professional-Grade Reliability: Specification grade rating supports use in commercial, institutional, and industrial facilities where device longevity matters.
Technical Specifications
- List Batch: LEV-20260730
- Voltage Rating: 120/277-Volt AC
- Current Rating: 20-Amp
- Switch Type: SPST, 1-Pole
- Grade: Extra Heavy-Duty Industrial/Specification Grade
Typical Applications
- Commercial and Industrial Lighting Control
- Motor and Equipment Switching
- Panelboard and Load Center Wiring
- Specification-Grade Commercial Installations
- New Construction and Renovation Projects
- High-Cycle, High-Traffic Switching Locations
Why Leviton?
Leviton's extra heavy-duty, industrial/specification grade toggle switches are built for electricians and facility managers who need dependable, code-compliant performance in demanding commercial and industrial settings. With a robust 20-Amp, 120/277-Volt AC rating and SPST, 1-pole switching, this device is designed to stand up to frequent use while maintaining consistent, professional-grade reliability across lighting, motor, and general power circuits.
Manufacturer Resources
Technical Information
Product Specs
- Product Type:
- Switch
- Amperage Rating:
- 20A
- Voltage Rating:
- 120/277V
- Poles:
- 1
- Grade:
- Specification
- Product Color:
- White
- Department:
- Electrical
- Product Group:
- Wiring Devices
- Product Subgroup:
- Toggle Switches
Leviton 1221-2W – Frequently Asked Questions
1) Can a Leviton 1221-2W toggle switch be used on a 277V lighting circuit?
Yes. The Leviton 1221-2W is rated 20A at 120/277V AC, so it works on both standard 120V branch circuits and the 277V lighting circuits common in commercial buildings fed from a 480/277V system. Same device either way, no separate part number for the higher voltage.
2) Is a single-pole switch like the Leviton 1221-2W the right one, or do I need a 3-way?
The 1221-2W is single pole, one pole, SPST. That means one switch location controlling one circuit, on and off. If the same lights have to be switched from two locations (top and bottom of a stair, two ends of a corridor), a single pole switch will not do it, you need a pair of 3-way switches instead. For three or more locations you add 4-way switches between them.
3) What is the difference between a specification grade switch and the residential grade ones, and is it worth it?
Grade is the durability tier. The 1221-2W is extra heavy-duty industrial/specification grade, built for high-cycle switching: corridor lighting on a schedule, shop and warehouse fixtures, equipment that gets flipped dozens of times a day. Residential grade devices are built for a switch that sees a few operations a day in a bedroom. For an MRO standard across a commercial or institutional building, spec grade is the tier you standardize on so you are not pulling devices back out in a year.
4) Will a 20 amp Leviton 1221-2W switch work on a 15 amp circuit?
Yes. A 20A switch on a 15A circuit is fine, the device rating only has to meet or exceed the load and the overcurrent protection. What you cannot do is go the other way and put a 15A switch on a 20A circuit. Using the 20A 1221-2W everywhere is a common way to keep one part number on the truck for both circuit sizes.
5) Can I use the Leviton 1221-2W to switch a motor or a piece of equipment, not just lights?
It is built for general purpose switching including lighting circuits and motor and equipment switching, within its 20A 120/277V AC rating. What decides it on your job is the load: confirm the motor's current draw and any inrush sit inside 20A at your system voltage, and remember a switch is not a disconnect, so any disconnecting means required for the equipment still has to be provided separately.
6) I need to standardize switches across a whole building, what is the Leviton part number to spec?
Leviton 1221-2W, white, is the MPN to put on the schedule. One model number covers both the 120V and the 277V circuits in the building at 20A, single pole, which is what makes it workable as a single standard across offices, corridors, and back-of-house. For three-way and four-way locations you will add those separate devices to the same spec.
7) Can I put a Leviton 1221-2W on a dimmable lighting circuit?
No. This is an on/off toggle switch, single pole, not a dimmer. Wiring it in place of a dimmer gives you full output or nothing. If the drawing calls for dimming, you need a dimmer rated for the load type (line-voltage incandescent, LED/CFL, or 0-10V control for commercial LED drivers), matched to your circuit voltage.
8) What color is the Leviton 1221-2W and does a wall plate come with it?
White. It is a standard toggle device, so it takes a standard single-gang toggle wall plate, which is ordered separately along with any box or mounting hardware. If you are matching existing devices on a floor, note that Leviton's 1221 series runs in other colors under different suffixes, so the -2W suffix is the one to specify when you want white.
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Does the Leviton 1221-2W come with a warranty?
Absolutely. The Leviton 1221-2W is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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