Leviton 120/277V AC 20A SPDT C...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$34.14
Leviton 120/277V AC 20A SPDT Center-Off Toggle Switch, Industrial/Specification Grade

Leviton 120/277V AC 20A SPDT Center-Off Toggle Switch, Industrial/Specification Grade

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Model: 1257-W

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

$34.14
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Leviton 120/277V AC 20A SPDT Center-Off Toggle Switch, Industrial/Specification Grade

The Leviton 120/277V AC 20A SPDT Center-Off Toggle Switch is an extra heavy-duty, industrial/specification grade device engineered for demanding commercial and industrial control applications. Rated for 120/277-Volt AC service at 20-Amp, this single-pole, double-throw (SPDT) toggle switch features a center-off position that gives electricians added circuit control by allowing the switch to rest in a neutral, de-energized state between its two active positions. Its quiet AC-rated toggle mechanism and rugged internal construction reflect Leviton's extra heavy-duty, industrial/specification grade design standard, making it a dependable choice wherever a durable, professional-grade toggle switch is required for higher-traffic or higher-demand electrical systems.

Key Features

  • Electrical Rating: Rated 120/277-Volt AC at 20-Amp for use across a wide range of commercial and industrial lighting, motor, and control circuits.
  • SPDT Center-Off Configuration: Single-pole, double-throw switching with a center-off position provides added control flexibility for multi-position and three-way style circuits.
  • 1-Pole Design: Single-pole toggle configuration simplifies wiring for standard control applications while keeping installation straightforward.
  • Extra Heavy-Duty Construction: Built to an extra heavy-duty performance standard for long service life in high-cycle, high-use industrial and commercial environments.
  • Industrial/Specification Grade: Meets industrial and specification grade requirements, exceeding standard residential-grade switch performance for professional installations.
  • AC Quiet Toggle Mechanism: Quiet AC switching action reduces operational noise compared to standard mechanical toggle switches.
  • Toggle Actuator: Traditional toggle handle design offers familiar, tactile on/off/center-off operation for end users and maintenance staff.

Technical Specifications

  • list_batch: LEV-20260731
  • Amperage: 20A
  • Poles: 1
  • Product Color: White

Typical Applications

  • Commercial and Industrial Electrical Installations
  • Three-Way and Center-Off Lighting Control Circuits
  • Motor and Equipment Control Applications
  • Specification-Grade Renovation and New Construction Projects
  • High-Use Industrial Facilities and Commercial Buildings
  • Panel and Control Enclosure Switching

Why Leviton?

Leviton engineers this toggle switch to an extra heavy-duty, industrial/specification grade standard, giving electricians, contractors, and facility managers a dependable option for demanding 120/277-Volt AC, 20-Amp control applications. The SPDT center-off configuration and quiet AC toggle mechanism reflect Leviton's focus on reliable, code-compliant performance built to hold up under the rigors of professional electrical work in commercial and industrial settings.

Manufacturer Resources

Product Specs

Product Type:
Toggle Switch
Amperage Rating:
20A
Voltage Rating:
120/277V
Poles:
1
Grade:
Specification
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Toggle Switches

Leviton 1257-W – Frequently Asked Questions

1) What does the center-off position on the Leviton 1257 toggle switch actually do in a circuit?
The Leviton 1257 is a single-pole, double-throw toggle with three handle positions: one common feeding load A, one common feeding load B, and a neutral center position where neither load is energized. That makes it useful where you want to select between two circuits (two lighting zones, two motor feeds, two speeds) and still have a true off point in the middle. A standard single-pole switch only makes or breaks one load, and a plain three-way switch transfers between two travelers with no off position at all.
2) Can I use a 20A SPDT center-off toggle switch on a 277V lighting circuit?
Yes. The switch is rated 120/277V AC at 20 amps, so it covers both the 120V branch circuits and the 277V lighting circuits typical of commercial buildings fed from a 480/277V system. Same device either way, no separate part number for the 277V application.
3) I need a three-way switch, not a center-off. What should I use instead of the Leviton 1257?
Use the Eaton Arrow Hart industrial grade three-way toggle switch, catalog AH-1223GY, rated 20A at 120/277V. It carries the same amperage and voltage service as the Leviton 1257 but is built as a standard three-way device for controlling one load from two locations. The Leviton 1257 is a single-pole, double-throw switch with a center-off position, which rests de-energized between its two active positions rather than simply traveling between them.
4) Can I use a Bryant 4801W in place of the Leviton 1257 toggle switch?
Not as a direct swap. The Bryant 4801W is a 4-Series single-pole 15A 277V AC toggle switch in white. It is a single-pole device at 15A, so it does not cover the Leviton 1257's 20A rating, its 120/277V service, or its single-pole, double-throw center-off switching. Use the Bryant only where the circuit is a plain single-pole load within its 15A rating.
5) Is this switch heavy duty enough for a high-cycle industrial application?
It is built to Leviton's extra heavy-duty industrial/specification grade standard, which is the tier above residential and commercial grade devices and is what gets specified for high-cycle switching in plants, shops, and equipment rooms. The AC quiet toggle mechanism is part of that spec-grade construction.
6) What are the alternatives to the Leviton 1257 if I just need a plain 20A spec grade toggle?
If you do not need the center-off or the double-throw action, a straight 20A specification grade toggle covers it. The Pass & Seymour CS20AC3I is a commercial 20A spec grade toggle in ivory, and the PS20AC3W is the industrial extra heavy duty spec grade version in white. Either is a simpler device for ordinary on/off lighting control; the 1257 is the one to keep when the circuit has to select between two loads.
7) Will this switch handle a motor or equipment control load?
It is an AC-rated 20A device at 120/277V and the intended applications include motor and equipment control and panel or control enclosure switching. The SPDT center-off arrangement is what makes it workable for selector duty, for example forward/off/reverse style position selection or picking between two supply legs, with a positive de-energized middle position.
8) Can I standardize my building on these and mix them with lower amperage toggles?
You can install a 20A device on a 15A branch circuit without issue, so a facility standardizing on one spec-grade toggle can use the 20A rating across both. Going the other way does not work: a 15A switch cannot serve a 20A circuit. Something like the Bryant 4801W single-pole is a 15A 277V device, so it would not substitute on a 20A feed.
9) I need an ivory specification grade 20A toggle switch. How does the Pass & Seymour CS20AC3I compare to the Leviton 1257-I?
Both are ivory specification grade 20A toggle switches. The Pass & Seymour CS20AC3I is a commercial 20A specification grade device, while the Leviton 1257-I is an industrial/specification grade single-pole, double-throw switch with a center-off position rated 120/277V AC at 20A. If you are matching devices already installed on a center-off control circuit, the Leviton configuration is the one to hold to; for straightforward ivory switching in a commercial space, the CS20AC3I is the peer.
10) Is there a less expensive general-purpose toggle switch than the Leviton 1257 for light commercial work?
For ordinary single-load switching where a center-off position is not needed, the Pass & Seymour TradeMaster grounding toggle switches cover it: the 660G in brown satin thermoplastic and the 663LAG in light almond thermoplastic. Both are grounding toggle devices for standard on/off control. Step up to the Leviton 1257 when the circuit needs single-pole, double-throw switching with a center-off rest position at 120/277V AC, 20A, in a specification grade body.
11) Which 20A toggle switches match the Leviton 1257 in white for standardizing a facility?
In white, the Leviton 1257-W is the specification grade single-pole, double-throw center-off switch rated 120/277V AC at 20A. The Pass & Seymour PS20AC3W is the white industrial extra heavy duty specification grade toggle in the same family of devices. Standardizing across a building usually means picking one grade and one color and holding to it; both of these are specification grade white devices, so the deciding factor is whether the opening needs the center-off switching the Leviton provides.
12) Does a center-off toggle switch need a special wall plate?
No. The 1257 uses a conventional toggle handle in a standard strap, so it takes an ordinary single-gang toggle plate and mounts in a standard device box like any other toggle switch. The only difference the user sees is that the handle rests in three positions instead of two.
How fast can I get the Leviton 1257-W 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 Leviton 1257-W come with a warranty?
Absolutely. The Leviton 1257-W 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 Leviton 1257-W?
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
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