Pass & Seymour Commercial Spec...
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Pass & Seymour Commercial Specification Grade 3-Way Switch

Pass & Seymour Commercial Specification Grade 3-Way Switch

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Model: CS15AC1

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

$5.54
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Pass & Seymour Commercial Specification Grade 3-Way Switch, Light Almond

The Pass & Seymour Commercial Specification Grade 3-Way Switch in Light Almond is a side-wire device rated 15A 120/277V, built for demanding commercial and industrial lighting control applications. It features a high-strength thermoplastic polycarbonate toggle, oversized silver alloy contacts, and a cam-designed switching mechanism engineered for fast make with positive break action to minimize arcing and extend switch life. The device is Federal Spec Listed and cULus Listed, making it a dependable choice where specification-grade performance and code compliance are required.

Key Features

  • Electrical Rating: 15A 120/277V for reliable commercial-duty switching performance.
  • Side-Wire Termination: Accepts #14 - #10 AWG copper or copper-clad wire for flexible field wiring.
  • Switching Action: Cam-designed mechanism delivers fast make with positive break action to minimize arcing and prolong switch life.
  • Contact Durability: Oversized silver alloy contacts provide longer, dependable switch life under repeated use.
  • Toggle Construction: High-strength thermoplastic polycarbonate toggle resists breaking and chipping under heavy abuse.
  • Back Body Material: Glass-reinforced nylon back body with locking support resists face and back body separation.
  • Strap & Contact Arm: One-piece steel strap with integral ground is plated for corrosion resistance, paired with a one-piece brass alloy contact arm for reliable electrical performance.
  • Hardware & Operation: Tri-drive terminal and mounting screws with heavy-duty toggle bumpers for smooth, quiet operation.

Certifications & Compliance

  • Federal Spec Listed
  • cULus Listed

Technical Specifications

  • Material: Thermoplastic
  • Finish: Matte
  • Color: Light Almond
  • Voltage Rating: 120/277V
  • Amperage Rating: 15A
  • Wire Range: #14 - #10 AWG copper or copper-clad
  • Country of Origin: Mexico
  • Packaging: 10 EA per pack

Typical Applications

  • Commercial and Industrial Electrical Installations
  • Three-Way Lighting Control Circuits
  • Office, Retail, and Institutional Wiring Upgrades
  • New Construction and Renovation Projects
  • Specification-Grade Switching Requirements

Why Pass & Seymour?

Pass & Seymour builds this commercial specification grade 3-way switch with oversized silver alloy contacts, a glass-reinforced nylon back body, and a one-piece brass alloy contact arm for consistent, code-compliant performance. Federal Spec Listed and cULus Listed construction gives electrical professionals confidence in reliable, long-lasting switching for demanding commercial environments.

Manufacturer Resources

Spec Sheet

Product Specs

Product Type:
Wall Switch
Product Material:
Thermoplastic
Configuration:
3-Way
Voltage Rating:
120/277V
Amperage Rating:
15A
Listing:
cULus
Product Finish:
Matte
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Switches
Product Width:
1.32 in
Product Depth:
1.073 in
Product Height:
3.281 in

Pass & Seymour CS15AC1 – Frequently Asked Questions

1) Will a Pass & Seymour CS series 3-way switch work on a 277V lighting circuit?
Yes. The Pass & Seymour Commercial Specification Grade 3-way switch is rated 15A at 120/277V, so it works on 277V branch circuits feeding fluorescent or LED lighting in commercial buildings as well as standard 120V residential-style circuits. That dual rating is why it shows up on office, retail, and institutional lighting plans where the panel is 277/480V.
2) What wire size does the Pass & Seymour commercial 3-way switch accept, and is it side-wire or back-wire?
It's a side-wire device with tri-drive terminal screws, and it takes #14 through #10 AWG copper or copper-clad conductors. No back-wire or push-in pocket, so plan on forming loops under the screws. The #10 capacity matters on long 277V runs where the circuit is upsized for voltage drop.
3) Do I need a 3-way switch or a single-pole for my application?
Use the 3-way configuration when one light or group of lights is controlled from two separate locations, like both ends of a corridor or a stair. It has a common terminal plus two travelers and needs a second 3-way at the other box. If the load is switched from one spot only, a single-pole device is the right part instead, such as the Bryant 9801 BR Series 1-pole 15A 120/277V AC switch or the Leviton 1221-2W specification grade SPST toggle.
4) Is this switch listed for use where the inspector requires a UL listed device?
The Pass & Seymour commercial specification grade 3-way switch is cULus Listed and Federal Spec Listed, which covers both US and Canadian installations and satisfies federal and institutional spec language calling for a listed specification grade switch.
5) My spec calls for a 20A switch. Can I use this 15A device?
Not where the drawing calls out 20 amps. This Pass & Seymour commercial specification grade device is rated 15A at 120/277V. For a 20A lighting switch, the Leviton 1221-2W is an extra heavy-duty industrial specification grade SPST toggle rated 20A 120/277V, and the Leviton 1286-W is a 20A DPDT center-off specification grade toggle if the circuit needs double-pole switching.
6) I only need a single-pole switch on a 277V lighting circuit - what should I use instead of a 3-way?
A 3-way device like the Pass & Seymour CS is built for two switch locations controlling one load, so for a single switch point use a single-pole instead. The Bryant 9801 is a BR series 1-pole AC switch rated 15A 120/277V, which matches the Pass & Seymour CS on both the 15A rating and the 120/277V dual voltage. If you want a 20A single-pole at the same voltages, the Leviton 1221-2W is an extra heavy-duty industrial specification grade SPST toggle rated 20A 120/277V AC.
7) What is the closest equivalent to the Pass & Seymour CS commercial spec grade 3-way switch from another brand?
The Leviton 1223-PLR is the nearest 3-way toggle in the group - a 3-way extra heavy-duty industrial grade toggle switch rated 20 amp 120 volt, with a pilot light built in. The Pass & Seymour CS 3-way is rated 15A at 120/277V, so if the circuit is 277V lighting the Pass & Seymour carries the dual 120/277V rating while the Leviton 1223-PLR is specified at 120 volt. The pilot light on the Leviton also means the toggle shows when the load is energized, which the Pass & Seymour toggle does not do.
8) What colors does the Pass & Seymour CS commercial 3-way switch come in?
Three colors: brown (CS15AC1), gray (CS20AC1-GRY), and light almond (CS20AC3-LA). The face has a matte finish rather than gloss, which is what most commercial spec books call for and what keeps it matching across a corridor of existing devices. Order plates separately in the matching color.
9) Is a specification grade switch worth it over a residential one for a high-traffic building?
For doors, corridors, and restrooms that get flipped dozens of times a day, yes. This device uses oversized silver alloy contacts, a cam switching mechanism that makes fast and breaks positively to cut arcing, a one-piece brass alloy contact arm, and a glass-reinforced nylon back body locked to the face so the two don't separate. The toggle is high-strength thermoplastic polycarbonate to resist chipping and breaking under abuse. Those are the parts that fail first on a residential-grade switch.
10) Is the Leviton 1221-2W a drop-in replacement for the Pass & Seymour CS 3-way switch?
No. The Leviton 1221-2W is a single-pole SPST toggle switch, so it has travelers neither wired nor supported - it cannot take over a three-way circuit. The Pass & Seymour CS device is 3-way configuration for two-location control. Both are 120/277V class devices, and the Leviton is rated 20A against the Pass & Seymour's 15A, but the pole configuration is the deciding difference, not the amperage.
11) I need a switch tenants or staff cannot flip - what do I use in place of the Pass & Seymour CS toggle?
The Pass & Seymour CS is a standard thermoplastic toggle with no locking provision. For a switch that needs to be key-restricted or locked, look at the Bryant 4802L, a 4 Series single-pole locking AC switch rated 20A 277V, or the Leviton 1221-2IL, an industrial grade locking toggle switch, SPST 1-pole, 20A, 120/277V. Both of those are single-pole, so they control one switch location only - they are not substitutes for the 3-way function of the Pass & Seymour CS.
12) What is the difference between commercial specification grade like the Pass & Seymour CS and the industrial grade Leviton switches?
The Pass & Seymour CS is built to commercial specification grade with oversized silver alloy contacts, a one-piece steel strap with integral ground, a glass-reinforced nylon back body, and a one-piece brass alloy contact arm, and it is Federal Spec Listed and cULus Listed at 15A 120/277V. The Leviton 1221-2W is designated specification grade and described as extra heavy-duty industrial, rated 20A 120/277V AC, and the Leviton 1221-2IL is designated industrial grade. In practice the industrial-designated devices sit at the 20A rating while the Pass & Seymour CS is a 15A device; choose by the amperage the circuit and the fixture load require.
13) My circuit needs a center-off or double-pole switch - is the Pass & Seymour CS 3-way the right device?
No. A 3-way switch such as the Pass & Seymour CS transfers one common to one of two travelers and has no off position of its own in the circuit sense. For a center-off double-pole application, the Leviton 1286-W is a 20-amp DPDT center-off toggle switch in industrial/specification grade. That is the correct device for reversing or two-load selection with a true off in the middle; the Pass & Seymour CS cannot be wired to do it.
14) Does the Pass & Seymour CS switch ground through the mounting strap or do I need a separate ground wire?
It has a one-piece steel strap with an integral ground, plated for corrosion resistance. Pull a ground to the device as your local code requires; the integral-ground strap is what bonds the yoke and mounting screws, not a substitute for a self-grounding spec in a box where that's called out. If you specifically want an auto-ground device, the Eaton decorator duplex combination switch is a commercial grade auto-ground option.
15) How is the Pass & Seymour commercial 3-way switch packaged for a multi-unit or large job?
It ships 10 each per pack, which lines up with device-per-box counts on apartment turns and corridor retrofits where you're replacing switches in quantity. Buy in pack multiples when you need to keep one color consistent across a floor.
16) I need a switch and receptacle in one gang box - is there an alternative to using the Pass & Seymour CS switch?
The Pass & Seymour CS is a switch only, so it occupies the full device opening. If the opening has to do two jobs, the Eaton 275VBOX is a decorator duplex combination switch with auto-ground, rated 15A, in white and designated commercial grade. It matches the Pass & Seymour CS on the 15A rating, but it is a combination device rather than a 3-way toggle, so confirm the circuit does not require three-way control before substituting.
How fast can I get the Pass & Seymour CS15AC1 delivered?
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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 CS15AC1 come with a warranty?
Absolutely. The Pass & Seymour CS15AC1 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 CS15AC1?
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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