Pass & Seymour PS20AC1 Extra H...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$11.69
Pass & Seymour PS20AC1 Extra Heavy-Duty Specification Grade Toggle Switch

Pass & Seymour PS20AC1 Extra Heavy-Duty Specification Grade Toggle Switch

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Model: PS20AC1-BK

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

$11.69
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Pass & Seymour PS20AC1BK Industrial Extra Heavy Duty Specification Grade Toggle Switch, Black

The Pass & Seymour PS20AC1BK is an Industrial Extra Heavy Duty Specification Grade toggle switch finished in black, built for demanding commercial and industrial wiring applications. It features a shallow design for easier installation, a one-piece toggle molded from chemical-, impact-, and heat-resistant thermoplastic, and a glass-reinforced, chemical-resistant thermoplastic back body for long-term durability. The switch is cULus Listed and Federal Spec Listed, making it a dependable choice for specification-grade electrical projects.

Key Features

  • Shallow Design: Reduced depth profile allows for easier installation in tight box conditions.
  • Durable Toggle Construction: One-piece toggle molded from chemical-, impact-, and heat-resistant thermoplastic for long service life.
  • Heavy-Duty Contact Arm: Brass alloy, one-piece contact arm virtually eliminates contact bounce for reliable switching.
  • Quiet Operation: Heavy-duty bumpers deliver quiet, smooth actuation.
  • Flexible Wiring Options: Side and external screw-pressure-plate back wire terminals accept #14 - #10 AWG copper or copper-clad wire; grounding terminal is standard with screw-pressure plate back wire.
  • Impact- and Chemical-Resistant Cover: Protects against harsh cleaning agents and job-site impact.
  • Corrosion-Resistant Strap: One-piece nickel-plated brass strap provides superior corrosion resistance.
  • Positive Switching Action: Cam control and spring actuator ensure positive "makes and breaks," while an auto-ground clip assures positive grounding and oversized silver-alloy contacts support long life and improved heat dissipation.

Certifications & Compliance

  • cULus Listed
  • Federal Spec Listed

Technical Specifications

  • Country Of Origin: Mexico
  • Product Finish: Matte
  • Product Height: 3.281 in
  • Product Line: Pass & Seymour
  • Product Width: 1.32 in
  • Product Depth: 1.073 in

Typical Applications

  • Commercial and Industrial Electrical Installations
  • Specification-Grade Wiring Device Upgrades
  • Panelboard and Load Center Adjacent Switching
  • Renovation and New Construction Projects
  • Facilities Requiring Federal Spec Compliance

Why Pass & Seymour?

Pass & Seymour builds this toggle switch with a glass-reinforced thermoplastic back body, a nickel-plated brass strap, and oversized silver-alloy contacts to deliver dependable, code-compliant performance for professional electrical work. Backed by cULus Listing and Federal Spec Listing, it's engineered to hold up to repeated use and harsh cleaning in demanding industrial environments.

Manufacturer Resources

Spec Sheet

Product Specs

Listing:
cULus
Product Type:
Switch
Department:
Electrical
Country of Origin:
Mexico
Product Finish:
Matte
Product Group:
Wiring Devices
Product Subgroup:
Toggle Switches

Pass & Seymour PS20AC1-BK – Frequently Asked Questions

1) What wire size do the terminals on the Pass & Seymour PS20AC1 toggle switch accept?
Side screws and the external screw-pressure-plate back wire terminals take #14 through #10 AWG copper or copper-clad wire. A grounding terminal comes standard with the screw-pressure plate back wire, so you can land the ground without adding a pigtail clip. That #10 capacity is what lets it sit on a 20A branch circuit run in heavier gauge for voltage drop.
2) Will a PS20AC1 switch fit in a shallow or crowded wall box?
That is the reason to pick it. The PS20AC1 uses a shallow body, listed at 1.073 in deep, with an overall height of 3.281 in and width of 1.32 in. In a box already packed with conductors, the reduced depth gives you room to fold wire behind the device instead of fighting the strap back to the plaster ring.
3) Is the Pass & Seymour PS20AC1 toggle switch UL listed and approved for federal specification jobs?
It is cULus Listed, which covers both US and Canadian installation, and it is Federal Spec Listed for work where that compliance is called out on the drawings. Institutional and government MRO buyers standardizing a facility can specify it on that basis.
4) What is a comparable 20A AC toggle switch to the Pass & Seymour PS20AC1 from another brand?
The Bryant 4801GLI is a 4-Series 20A 277V lighted AC switch, which covers the same 20A AC switching duty as the PS20AC1 while adding an illuminated toggle. The PS20AC1 itself is an extra heavy-duty specification grade toggle switch with a one-piece nickel-plated brass strap, oversized silver-alloy contacts, and side plus back-wire terminals taking #14 to #10 AWG copper. If you do not want a lighted handle, the 4801GLI is not a like-for-like visual match.
5) I need a switch that can be locked in position instead of a standard toggle - what should I use?
The Pass & Seymour PS20AC1 is a standard one-piece toggle with cam control and spring actuator, so it cannot be locked off. For an opening where the switch must be secured, the Bryant 4802L is a 4 Series single-pole locking AC switch rated 20A 277V, matching the same 20A AC duty in a locking format.
6) Can I use a Bussmann TPHCS-250 in place of a Pass & Seymour PS20AC1?
No. The Bussmann TPHCS-250 is a TPH Series high-current switch rated 80 Vdc with 100kA SCCR - a DC power switching device, not a wall-box wiring device. The Pass & Seymour PS20AC1 is a specification grade AC toggle switch sized for a standard device box at 3.281 in high, 1.32 in wide and 1.073 in deep with a shallow body for tight boxes. They do not interchange in either direction.
7) Is a specification grade toggle switch worth it over a standard residential switch in a commercial building?
For commercial and industrial work, yes. The PS20AC1 is built around a one-piece nickel-plated brass strap for corrosion resistance, a brass alloy one-piece contact arm that virtually eliminates contact bounce, oversized silver-alloy contacts for longer life and better heat dissipation, and a glass-reinforced thermoplastic back body. The cover resists impact and harsh cleaning chemicals, which matters in kitchens, plants, and healthcare corridors where a residential-grade device gets wiped down daily and fails early.
8) Does the PS20AC1 switch ground itself to a metal box, or do I still need a ground wire?
It has an auto-ground clip that grounds through the strap and yoke to a properly grounded metal box, plus a dedicated grounding terminal on the device. On a nonmetallic box, or wherever the inspector wants a bonding jumper, use the grounding terminal.
9) What else could I use instead of the Pass & Seymour PS20AC1 for a 20A commercial AC switch?
Bryant's 4-Series covers similar ground: the 4801GLI is a lighted 20A 277V AC switch if you want a locator handle, and the 4802L is a single-pole 20A 277V locking switch when you need the toggle key-locked against casual operation. For a lighter-duty 15A opening, the Bryant 9801 in the BR Series is a 1-pole 15A 120/277V AC switch. None of those carry the PS20AC1's Federal Spec listing, so if the submittal calls for it, stay with the Pass & Seymour.
10) Can I use a PS20AC1 toggle switch as a disconnect for heavy motor or DC equipment?
No. It is a specification grade AC wiring device for lighting and general branch circuit switching in commercial and industrial installations. For high-current or DC disconnect duty, look at a dedicated switch like the Bussmann TPHCS-250, a TPH Series high-current switch rated 80 Vdc with a 100kA SCCR.
11) Is there a lighter-duty 15A alternative if I do not need a 20A specification grade switch?
Yes. The Bryant 9801 is a BR Series 1-pole 15A 120/277V AC switch, a step down in ampacity from the 20A Pass & Seymour PS20AC1. The PS20AC1 is built as an extra heavy-duty specification grade device with a glass-reinforced thermoplastic back body and impact- and chemical-resistant cover for industrial cleaning environments; the 9801 is the choice where a 15A general-purpose circuit is all the drawing calls for.
12) What is the difference between the Pass & Seymour PS20AC1 and the Bryant CSB2BW?
The Bryant CSB2BW is a DPA Series 1/277V wiring device switch. The Pass & Seymour PS20AC1 is an extra heavy-duty specification grade toggle switch that is cULus Listed and Federal Spec Listed, offered in black and gray with a matte finish. Where the job requires Federal Spec compliance, the PS20AC1 is the device that carries that listing.
13) What colors does the PS20AC1 extra heavy-duty toggle switch come in?
Two: black (PS20AC1-BK) and gray (PS20AC1-GRY), both in a matte finish. If you are matching devices across a building, order all one color code up front, since the toggle and cover are molded thermoplastic rather than painted.
14) Is this toggle switch quiet enough for an office or patient room?
Quieter than a basic snap switch. Heavy-duty bumpers plus a cam control and spring actuator give smooth actuation with positive makes and breaks, so you get the mechanical feel without the loud snap. If you need true silent switching you want a mercury-free AC quiet switch or an electronic control instead.
How fast can I get the Pass & Seymour PS20AC1-BK 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 PS20AC1-BK come with a warranty?
Absolutely. The Pass & Seymour PS20AC1-BK 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 PS20AC1-BK?
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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