Pass & Seymour PS20AC3-BK 3-Wa...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$40.16
Pass & Seymour PS20AC3-BK 3-Way Toggle Switch, 20A 120/277V, Black

Pass & Seymour PS20AC3-BK 3-Way Toggle Switch, 20A 120/277V, Black

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Model: PS20AC3-LA
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$40.16
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Pass & Seymour PS20AC3-BK 3-Way Toggle Switch, 20A 120/277V, Black

The Pass & Seymour PS20AC3-BK is an Industrial Extra Heavy-Duty Specification Grade 3-Way Toggle Switch rated 20A at 120/277V, built for demanding commercial and industrial multi-location lighting and load control. This spec-grade device features a glass-reinforced thermoplastic back body and a one-piece nickel-plated brass strap, and is available in Black or Light Almond finish to match a range of facility environments. It is cULus Listed and Federal Spec Listed, giving specifiers a code-compliant option wherever spec-grade switching is required.

Key Features

  • Electrical Rating: 20A 120/277V 3-Way toggle switch for reliable multi-location lighting and load control.
  • Wiring Method: Side and external screw-pressure-plate back wire terminations accept #14 - #10 AWG copper or copper-clad wire, with a grounding terminal standard on the screw-pressure plate back wire.
  • Durable Construction: Glass-reinforced thermoplastic housing and a one-piece nickel-plated brass strap deliver superior corrosion resistance and long-term durability.
  • Oversized Silver-Alloy Contacts: Provide long contact life and better heat dissipation under heavy switching loads.
  • Auto-Ground Clip: Assures positive grounding on every installation.
  • Heavy-Duty Contact Arm: One-piece brass alloy contact arm with cam control and spring actuator virtually eliminates contact bounce for positive makes and breaks.
  • Reinforced Back Body: Glass-reinforced, chemical-resistant thermoplastic back body resists harsh cleaners and repeated use.
  • Finish Options: Available in Black or Light Almond with a matte toggle and cover, heavy-duty bumpers for quiet, smooth operation, and locking support that resists face and back body separation.

Certifications & Compliance

  • cULus Listed
  • Federal Spec Listed

Technical Specifications

  • Product Line: Pass & Seymour
  • Material: Thermoplastic
  • Finish: Matte, available in Black or Light Almond
  • Electrical Rating: 20A 120/277V
  • Wire Range: #14 - #10 AWG copper or copper-clad
  • Country of Origin: Mexico
  • Packaging: 10 EA

Typical Applications

  • Commercial and Industrial Electrical Installations
  • Specification-Grade Lighting and Multi-Location Switching
  • Heavy-Duty and High-Traffic Facility Environments
  • Renovation and New Construction Wiring
  • Projects Requiring Federal Spec-Listed Devices

Why Pass & Seymour?

Pass & Seymour builds this Industrial Extra Heavy-Duty Specification Grade Switch with oversized silver-alloy contacts, a nickel-plated brass strap, and a glass-reinforced thermoplastic back body for dependable performance in demanding environments. Backed by cULus Listing and Federal Spec Listing, and offered in Black or Light Almond, it delivers the code-compliant reliability that electrical professionals expect from spec-grade Pass & Seymour devices.

Manufacturer Resources

Spec Sheet

Product Specs

list_batch:
PASS-20260820
Product Type:
3-Way Toggle Switch
Voltage Rating:
120/277V
Amperage Rating:
20A
Connection Type:
Back and Side Wire
Product Finish:
Matte
Listing:
cULus
Product Material:
Thermoplastic
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Toggle Switches

Pass & Seymour PS20AC3-LA – Frequently Asked Questions

1) Will the Pass & Seymour PS20AC3 work on a 277V lighting circuit, or is it 120V only?
The PS20AC3 is rated 20A at 120/277V, so it runs on either a 120V branch circuit or a 277V commercial lighting circuit. That dual rating is why it shows up on office and industrial fluorescent and LED lighting jobs where the panel is 277/480V.
2) What wire size do the terminals on this Pass & Seymour spec grade switch accept?
Terminations take #14 through #10 AWG copper or copper-clad conductors. You get both side screws and external screw-pressure-plate back wire terminals, so you can pigtail or back-wire depending on how crowded the box is, and a grounding terminal is standard on the screw-pressure plate back wire.
3) Is this switch listed for federal and government specification work?
The PS20AC3 is cULus Listed and Federal Spec Listed, which is what gets it accepted on government and institutional jobs that call for spec-grade devices. It is sold as an Industrial Extra Heavy-Duty Specification Grade switch, not a residential or commercial grade device.
4) Is the Bryant 4903W a drop-in alternative to the Pass & Seymour PS20AC3 3-way switch?
The Bryant 4903W is also a 3-way AC toggle switch rated 20A, so the switching function and amperage line up with the PS20AC3. Two differences matter when specifying: the Bryant 4903W is rated 277V and described as commercial grade, while the PS20AC3 is rated 120/277V and is an industrial extra heavy-duty specification grade device. The 4903W is white; the Pass & Seymour is offered in Black or Light Almond.
5) Will the Ideal 774005 toggle switch work in place of a Pass & Seymour PS20AC3?
No. The Ideal Industries 774005 is a heavy-duty DPST on-off toggle switch with spade terminals, which is a different device class - it is double-pole single-throw and terminates on spades rather than wiring box screws. The PS20AC3 is a 3-way switch with back and side wire screw terminations accepting #14 to #10 AWG copper or copper-clad conductors, which is what a wall box three-way lighting circuit needs.
6) Do I still need to run a ground to the switch, or does it self-ground?
There is a dedicated grounding terminal on the screw-pressure plate back wire, plus an auto-ground clip that bonds the strap to a grounded metal box through the mounting screw. In a metal box the clip gives you positive grounding on its own; with a nonmetallic box, land your equipment ground on the green terminal.
7) What colors does the PS20AC3 come in, and which part number is which?
Two: Black is PS20AC3-BK and Light Almond is PS20AC3-LA. Both use a matte toggle and cover rather than gloss, so they stay consistent across a facility where you are matching existing device plates.
8) Will a spec grade toggle switch hold up in a wash-down or chemical plant area?
The back body is glass-reinforced, chemical-resistant thermoplastic, so it resists harsh cleaners, and the one-piece strap is nickel-plated brass for corrosion resistance. Oversized silver-alloy contacts handle heat from heavy switching. The device itself is not a sealed or weatherproof assembly, so for direct wash-down or wet locations it still has to go in a suitable enclosure or weatherproof cover.
9) Can I use this 20A switch to replace a 15A toggle on an existing circuit?
Yes. A 20A device can be installed on a 15A or 20A branch circuit; the amperage rating is the maximum the switch handles, not a requirement. The reverse is not true, so a 15A switch like the Bryant 4801W single-pole should not be used on a 20A circuit. Just confirm you are replacing a 3-way with a 3-way, since the PS20AC3 has three current-carrying terminals rather than two.
10) If I am standardizing a facility on extra heavy-duty spec grade switches, which products pair with the PS20AC3?
The PS20AC3 covers the 3-way positions as an industrial extra heavy-duty specification grade device at 20A 120/277V, cULus Listed. For the single-pole positions in the same job, the Leviton 1221 is an extra heavy-duty industrial specification grade SPST switch at 20A 120/277V and the Leviton 1221-2KL is an extra heavy-duty spec grade 1-pole switch at the same 20A 120/277V rating, so the amperage and voltage ratings stay consistent across the facility.
11) I need a switch that shows when the load is on - is there an option the PS20AC3 does not cover?
The PS20AC3 is a standard 3-way toggle with a matte toggle and no indicator. For a visual on/off indication, Leviton offers pilot light toggle switches: the 1201PLC is an industrial grade 1-pole pilot light switch at 120V, and the 1221-2L is an industrial grade pilot light toggle rated 20A 120/277V, 1-pole. Both are single-pole devices, so they will not serve a three-way, two-location circuit.
12) Can I use the Bryant 4801W where a PS20AC3 is specified?
Not interchangeably. The Bryant 4801W is a 4-Series single-pole toggle switch rated 15A 277V, so it switches from one location only and carries a lower amperage rating. The PS20AC3 is a 3-way switch rated 20A at 120/277V. Use the 4801W only where the circuit is single-location and a 15A device satisfies the design.
13) Does the PS20AC3 toggle switch come individually or in a multi-pack?
Packaging is 10 each. Country of origin is Mexico. That carton quantity suits re-lamping or device-replacement rounds across a building rather than a single-device repair.
How fast can I get the Pass & Seymour PS20AC3-LA 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 Pass & Seymour PS20AC3-LA come with a warranty?
Absolutely. The Pass & Seymour PS20AC3-LA 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 Pass & Seymour PS20AC3-LA?
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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