Pass & Seymour PS5666X Extra-H...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$82.19
$36.36
Pass & Seymour PS5666X Extra-Hard Use Spec-Grade Plug, 15A 250V

Pass & Seymour PS5666X Extra-Hard Use Spec-Grade Plug, 15A 250V

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Model: PS5666-X

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

$82.19
$36.36
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Pass & Seymour PS5666X Extra-Hard Use Spec-Grade Plug, 15A 250V

The Pass & Seymour PS5666X is a 15A, 250V extra-hard use Spec-Grade plug finished in black and white, built for demanding commercial and industrial cord-connection applications. It arrives completely ready-to-wire, cutting installation time, and is cULus Listed for code-compliant performance. Heavy-duty brass alloy blades and contacts, a rugged two-piece cord grip, and an impact- and chemical-resistant nylon housing make this plug suited for extra-hard use environments where reliability is critical.

Key Features

  • Electrical Rating: Rated 15A, 250V for extra-hard use plug applications.
  • Ready-to-Wire Design: Unit arrives completely ready-to-wire, cutting installation time significantly.
  • Tri-Drive Assembly Screws: Standard on all Specification Grade plugs and connectors for secure, reliable assembly.
  • Internal Dust Shield: Keeps terminals free of contaminants for long-term reliability.
  • Same-Plane Terminals: All 3-wire terminals located on the same plane, allowing quick wire termination from any angle.
  • Durable Construction: Heavy-duty brass alloy blades and contacts resist heat rise and provide excellent conductivity.
  • Cord Grip: Rugged two-piece cord grip provides more uniform cord retention, with recessed cord-grip screws to protect installers against screwdriver head slippage.
  • Finish: Nylon housing in black and white provides impact and chemical resistance.

Certifications & Compliance

  • cULus Listed

Technical Specifications

  • Country Of Origin: Mexico
  • Product Length: 1.752 in
  • Product Line: Pass & Seymour
  • Product Width: 1.516 in

Typical Applications

  • Commercial and Industrial Cord Connection
  • Extra-Hard Use Equipment Cords
  • Panelboard and Machine Shop Wiring
  • Renovation and New Construction Electrical Work

Why Pass & Seymour?

Pass & Seymour builds Spec-Grade devices like the PS5666X with heavy-duty brass alloy contacts, impact- and chemical-resistant nylon housings, and cULus Listed performance for reliable, code-compliant results on demanding jobsites. Tri-drive assembly screws and a rugged two-piece cord grip reflect the construction quality professionals expect from Specification Grade plugs and connectors.

Manufacturer Resources

Spec Sheet

Product Specs

Product Type:
Straight Blade Plug
Product Color:
Black and White
Voltage Rating:
250V
Amperage Rating:
15A
Product Material:
Nylon
Listing:
cULus
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Plugs & Connectors
Product Width:
1.516 in
Product Length:
1.752 in

Pass & Seymour PS5666-X – Frequently Asked Questions

1) Will the Pass & Seymour PS5666X plug work on a 250-volt machine cord?
Yes. The PS5666X is rated 15A at 250V, so it's built for 250-volt single-phase cord connections on shop machinery, equipment cords and similar commercial or industrial loads. Don't use it on a 120-volt circuit expecting a matching receptacle, since the blade configuration and rating are for 250V service.
2) Is this plug a 3-wire grounding type?
Yes, the PS5666X terminates three wires, hot, hot and ground, with all three terminals on the same plane for faster termination. It is a grounding-type 250V cord cap, not a two-wire ungrounded device.
3) What else could I use instead of the PS5666X for a 15A 250V cord end?
The closest cross-brand equivalent we carry is the Leviton 5666-C, a 3-wire 2-pole polarized industrial grade straight blade plug rated 250-volt single phase. If your load is 30 or 50 amps at 250V instead, look at the Leviton 931-E commercial grade straight blade plug. For a hospital-grade 250V cord end, the Bryant 8666TSP watertight hospital-grade plug in the 6-15P configuration is the one to spec.
4) Can I use the PS5666X on a 125-volt equipment cord?
No. This one is a 250V device. For a 125-volt cord end at 15 amps, the Eaton Arrow Hart AH5266 Ultra Grip industrial specification grade straight blade plug is the 15A 125V option, and the Bryant 8266T is the hospital-grade NEMA 5-15P choice.
5) What is the closest equivalent to the Pass & Seymour PS5666X from another manufacturer?
The Leviton 5666-C is the nearest match: it is a 3-wire 2-pole polarized industrial grade straight blade plug rated 250 volts, 1-phase, the same 250V two-pole three-wire arrangement the PS5666X uses at 15A, 250V. The PS5666X is a Spec-Grade device with a nylon housing in black and white and is cULus Listed; the Leviton is described as industrial grade. If the cord cap on the equipment is a 250V two-pole three-wire straight blade, either family addresses the same opening.
6) Can I use the PS5666X on patient-care equipment in a hospital?
The PS5666X is a Spec-Grade plug and is cULus Listed, but it is not a hospital grade device. For hospital grade cord caps, the Bryant 8266T is a NEMA 5-15P hospital grade plug, the Bryant 8395T is an angle hospital-grade plug in NEMA 5-20P, and the Bryant 8666TSP is a watertight hospital-grade plug in the 6-15P 250V configuration. The 8666TSP is the one to look at if you need 250V and hospital grade together.
7) What is the difference between an extra-hard use plug and a standard cord cap?
Extra-hard use means the plug is built to survive abuse: heavy-duty brass alloy blades and contacts that resist heat rise, an impact- and chemical-resistant nylon housing, and a two-piece cord grip that holds the cord uniformly instead of pinching it on one side. A standard residential-style cord cap has none of that and won't hold up on equipment cords that get dragged, flexed and struck daily.
8) Does the PS5666X come assembled, or do I have to strip it down before wiring?
It ships completely ready-to-wire, so you open it, land the conductors and close it up. All three wire terminals sit on the same plane, which means you can drive every screw from one angle instead of rotating the body in your hand. Tri-drive assembly screws and recessed cord-grip screws keep the driver from slipping off the head.
9) Will the PS5666X hold up in a plant where the cord sees oils and solvents?
The body is nylon, which gives impact and chemical resistance, and there's an internal dust shield that keeps grit and contaminants off the terminals. That combination is why it's specified for machine shop and panelboard work rather than a thermoplastic general-purpose cap.
10) Is a straight blade plug or an angle plug better for a tight equipment cord run?
The PS5666X is a straight blade plug with a body 1.752 in long and 1.516 in wide, so the cord exits in line with the blades. Where the receptacle sits close to a wall or behind equipment, an angle body routes the cord sideways: the Leviton 275-E is a commercial grade straight blade angle plug and the Bryant 8395T is an angle hospital-grade plug in NEMA 5-20P. Confirm the configuration matches your receptacle, since neither of those is a 250V two-pole three-wire device.
11) Is there a commercial grade alternative if I do not need Spec-Grade on the PS5666X?
Yes. The Leviton 275-E is a commercial grade 4-wire 3-pole straight blade angle plug, and the Leviton 931-E is a commercial grade 3-wire 2-pole straight blade plug for 250V AC. Both are commercial grade rather than the Spec-Grade construction of the PS5666X, which uses heavy-duty brass alloy blades and contacts and a two-piece cord grip. Note the 275-E is a 4-wire 3-pole device and will not mate with the 2-pole 3-wire configuration the PS5666X serves.
12) I need a plug for a wet or washdown location - is the PS5666X the right choice?
The PS5666X is built with an impact- and chemical-resistant nylon housing and an internal dust shield for extra-hard use, but it is not described as watertight. Where the cord cap sees direct water, the Bryant 8666TSP is a watertight hospital-grade plug in the 6-15P configuration, which is the same 250V 15 amp two-pole three-wire arrangement.
13) Where is the Pass & Seymour PS5666X made?
Mexico. That matters on public and institutional jobs where country of origin has to be documented in the submittal package.
14) What color is the Pass & Seymour PS5666X and does it matter for identifying 250V cords?
It comes in black and white. On a facility where crews standardize cord caps by voltage, that two-tone spec-grade body is easy to pick out from the all-black commercial caps in the same bin.
How fast can I get the Pass & Seymour PS5666-X 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 PS5666-X come with a warranty?
Absolutely. The Pass & Seymour PS5666-X 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 PS5666-X?
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
Why buy the Pass & Seymour PS5666-X from ZenSupply?
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