Pass & Seymour CSB Hard Use Sp...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$13.41
Pass & Seymour CSB Hard Use Specification Grade 4-Way Switch, 15A 120/277V

Pass & Seymour CSB Hard Use Specification Grade 4-Way Switch, 15A 120/277V

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Model: CSB20AC1-LA
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$13.41
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Pass & Seymour CSB Hard Use Specification Grade 4-Way Switch, 15A 120/277V

The Pass & Seymour CSB Hard Use Specification Grade 4-Way Switch is a construction-grade 4-way switch built for back and side-wire installation, rated 15A at 120/277V for demanding commercial and industrial wiring. This page covers the full color family, available in Gray, Ivory, and Light Almond, so you can match the switch to any facility color scheme while keeping the same specification-grade performance across every option. It is UL Listed, cULus Listed, CSA Listed, and Federal Spec Listed, with thermoplastic construction and a matte finish designed to hold up under heavy, repeated use while delivering dependable switching performance.

Key Features

  • Wiring Flexibility: Back and side-wire, external screw-pressure-plate terminals accept #14 - #10 AWG copper or copper-clad wire.
  • Tri-Drive Terminals: Tri-drive terminal and mounting screws speed installation and ensure secure connections.
  • Brass Alloy Contact Arm: One-piece brass alloy contact arm delivers reliable electrical performance.
  • Oversized Silver Alloy Contacts: Oversized silver alloy contacts provide longer, dependable switch life.
  • Durable Steel Strap: One-piece steel strap with integral ground is plated for corrosion resistance.
  • Impact-Resistant Toggle: High strength thermoplastic polycarbonate toggle resists breaking and chipping under heavy abuse, with heavy-duty toggle bumpers for smooth, quiet operation.
  • Reinforced Back Body: Glass-reinforced nylon back body with locking support resists face and back body separation.
  • Positive Break Cam: Cam is designed for fast make with positive break action to minimize arcing and prolong switch life.
  • Color Options: Available in Gray, Ivory, and Light Almond to match any decor.

Certifications & Compliance

  • UL Listed
  • cULus Listed
  • CSA Listed
  • Federal Spec Listed

Technical Specifications

  • Switch Type: 4-Way Switch, Back and Side-Wire
  • Electrical Rating: 15A 120/277V
  • Wire Range: #14 - #10 AWG copper or copper-clad
  • Material: Thermoplastic
  • Finish: Matte
  • Color Options: Gray, Ivory, Light Almond
  • Country of Origin: Mexico
  • Packaging: 10 EA

Typical Applications

  • Commercial and Industrial Electrical Installations
  • Multi-Location Lighting Control (4-Way Switching)
  • Hard-Use and High-Traffic Facilities
  • Specification-Grade Commercial Wiring Projects
  • Renovation and New Construction Wiring

Why Pass & Seymour?

Pass & Seymour builds this switch with a one-piece brass alloy contact arm, oversized silver alloy contacts, a corrosion-resistant plated steel strap, and a glass-reinforced nylon back body for long-term durability under hard use. Available in Gray, Ivory, and Light Almond and backed by UL, cULus, CSA, and Federal Spec listings, it delivers the code-compliant, reliable performance professional electricians expect from specification-grade wiring devices.

Manufacturer Resources

Spec Sheet

Product Specs

list_batch:
PASS-20260820
Product Type:
Wall Switch
Product Finish:
Matte
Voltage Rating:
120/277V
Amperage Rating:
15A
Configuration:
4-Way
Listing:
cULus
Product Material:
Thermoplastic
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Switches

Pass & Seymour CSB20AC1-LA – Frequently Asked Questions

1) Can the Pass & Seymour CSB 4-way switch be used on a 277V lighting circuit?
Yes. The CSB is rated 15A at both 120V and 277V, so it works on standard 120V branch circuits and on 277V commercial lighting legs fed from a 480/277V system. Same device either way, no separate part number for the higher voltage.
2) Do I need a 4-way switch or a 3-way switch for controlling lights from three locations?
Three control points means two 3-way switches at the ends of the run and one 4-way in the middle. The CSB is the 4-way, so it is the middle device. If you only have two control locations, you do not need it at all, you need a pair of 3-ways. Add one more CSB for each additional location beyond three.
3) Is this switch listed for commercial code-compliant work?
The CSB carries cULus Listing, and is also noted as UL Listed, CSA Listed, and Federal Spec Listed. That covers US and Canadian jobs and federal specification work where a spec-grade device is called out on the drawing.
4) Is the Pass & Seymour CSB switch self-grounding, or do I need a separate ground jumper?
The strap is a one-piece steel strap with an integral ground, plated for corrosion resistance. You still land your equipment ground on the device per your inspector's practice, but the ground path is built into the strap rather than relying on a separate bonded part.
5) Which color options does the Pass & Seymour CSB 4-way switch come in, and which part number do I order?
Three colors: Ivory (CSB15AC2-I), Gray (CSB15AC4-GRY), and Light Almond (CSB20AC1-LA). All share the same hard use specification grade body with a matte finish, so you can standardize a facility on one device and just change the color to match existing plates.
6) Will this switch hold up in a high-traffic facility like a school corridor or warehouse?
That is what the hard use build is for. The toggle is high strength thermoplastic polycarbonate with heavy-duty bumpers so it resists breaking and chipping, the back body is glass-reinforced nylon with locking support to stop face-to-back separation, and the contacts are oversized silver alloy on a one-piece brass alloy contact arm. The cam gives a fast make with a positive break to cut arcing. Overall housing material is thermoplastic.
7) Can I use a 4-way switch like the CSB on a dimming circuit?
No. The CSB is a mechanical 4-way toggle switch, not a dimmer, and it has no dimming electronics. For multi-location dimming you need a dimmer at one location with matching companion or remote devices. Use the CSB where you want straight on/off switching from three or more points.
8) Does the CSB switch come with a wall plate?
No. The CSB ships as the device only, with its tri-drive mounting screws. Order toggle-style wall plates separately in the matching color, and note the device is sold in packs of 10 each.
How fast can I get the Pass & Seymour CSB20AC1-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 CSB20AC1-LA come with a warranty?
Absolutely. The Pass & Seymour CSB20AC1-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 CSB20AC1-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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