Eaton 4509-BOX Arrow Hart Stra...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$5.09
Eaton 4509-BOX Arrow Hart Straight Blade Plug, 6-20P, 20A, 250V, Yellow

Eaton 4509-BOX Arrow Hart Straight Blade Plug, 6-20P, 20A, 250V, Yellow

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Model: 4509-BOX

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

$5.09
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Eaton 4509-BOX Arrow Hart Straight Blade Plug, 6-20P, 20A, 250V, Yellow

The Eaton 4509-BOX is an Arrow Hart commercial-grade straight blade plug built for two-pole, three-wire grounding applications rated 20A at 250V. Configured as a 6-20P plug, this back-wire device accepts #18-12 AWG conductors and features a durable brass and vinyl construction with a bright yellow housing for quick visual identification on the jobsite. Designed for cord connection to equipment requiring 0.25-0.66" diameter cord range, the 4509-BOX delivers reliable, code-compliant performance for commercial electrical installations where a rugged, easy-to-wire plug is required.

Key Features

  • Configuration: 6-20P, two-pole, three-wire, grounding straight blade plug for dedicated 20A circuits.
  • Electrical Rating: Rated 20A at 250V for commercial-duty cord and plug connections.
  • Wire Range: Accepts #18-12 AWG conductors for flexibility with a range of cord types.
  • Termination: Back wire, screw-terminal construction for a secure, fast connection.
  • Durable Construction: Brass contacts paired with a vinyl housing and vinyl ED box provide long-lasting performance and insulation.
  • Cord Diameter: Fits cords measuring 0.25-0.66" in diameter for compatible strain relief.
  • Finish/Color: Yellow housing for high visibility and easy identification in commercial settings.

Technical Specifications

  • Configuration: 6-20P
  • Amperage Rating: 20A
  • Voltage Rating: 250V
  • Wire Range: #18-12 AWG
  • Termination: Back Wire, Screw
  • Material: Brass, Vinyl
  • Cord Diameter: 0.25-0.66"
  • Color: Yellow
  • Poles/Wires: Two-pole, three-wire, grounding

Typical Applications

  • Commercial Equipment Cord Connections
  • 20A, 250V Power Tool and Appliance Cords
  • Replacement Plug for Cord Sets
  • Industrial and Commercial Electrical Maintenance
  • New Cord Assembly Fabrication

Why Eaton?

Eaton's Arrow Hart line combines brass contacts with rugged vinyl housings to deliver commercial-grade plugs built for demanding jobsite conditions. The 4509-BOX's back-wire screw termination and wide 0.25-0.66" cord diameter compatibility make it a dependable choice for electricians who need consistent, code-compliant connections on 20A, 250V circuits.

Manufacturer Resources

Product Specs

list_batch:
EAT-20260924
Product Type:
Straight Blade Plug
Voltage Rating:
250V
Amperage Rating:
20A
Connection Type:
Back Wire
Configuration:
6-20P
Department:
Electrical
Product Subgroup:
Plugs & Connectors
Product Material:
Brass
Product Color:
Yellow
Product Size:
66"
Product Group:
Wiring Devices
Product Height:
1.5 in
Product Width:
1.5 in
Product Length:
2.5 in
Number Of Poles:
Two-pole

Eaton 4509-BOX – Frequently Asked Questions

1) Will the Eaton 4509-BOX plug fit a NEMA 6-20R receptacle?
Yes. The 4509-BOX is a 6-20P configuration, which is the plug half of the NEMA 6-20 pattern, so it mates with a 6-20R receptacle. That pattern is two-pole, three-wire grounding at 250V, so it is for a dedicated 240V circuit, not a 125V 5-20 outlet. If the receptacle on the wall has two angled blade slots plus a ground, you are in the right family.
2) What size cord and wire does the Eaton 4509-BOX 20A plug accept?
Conductors from #18 through #12 AWG, with a cord outside diameter of 0.25 to 0.66 inches for the strain relief to grip properly. That covers typical 12/3 SJ and SO cord down to light 18/3 flexible cord. If your cord jacket is larger than 0.66 inches, the clamp will not close on it and you need a different plug body.
3) Can I use this Eaton plug to replace the end on a 20A 240V tool cord?
That is one of its intended uses. The 4509-BOX is a cord-end replacement plug with back wire screw terminals, rated 20A at 250V, so it suits repairing or building 240V equipment cord sets and shop tool cords. You cut back the jacket, land the two hots and the ground under the screws, and clamp the jacket.
4) Is the 4509-BOX wired with back wire or side screw terminals?
Back wire with screw terminals. Conductors enter from the back of the body and clamp under the screws, which is faster to land than a side-wrap and holds stranded cord conductors more securely. No crimp lugs or special tool needed, just a screwdriver.
5) How many wires do I need to land in the Eaton 4509-BOX?
Three: two ungrounded (hot) conductors and an equipment ground. It is a two-pole, three-wire grounding device, so there is no neutral terminal. If your equipment needs both 240V and a neutral for 120V controls, this plug is the wrong configuration.
6) Why is this Eaton Arrow Hart plug yellow, and does the color affect the rating?
The yellow body is for visibility and quick identification of 250V cord ends on a jobsite or in a plant, where crews often color-code by voltage. It has no effect on the electrical rating: 20A, 250V either way. The housing is vinyl with brass contacts.
7) What is the exact Eaton part number to order for this yellow 6-20P plug?
Eaton Arrow Hart 4509-BOX. The BOX suffix is the boxed packaging of the vinyl plug body; the device itself is the 6-20P, 20A, 250V yellow straight blade plug.
How fast can I get the Eaton 4509-BOX 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 Eaton 4509-BOX come with a warranty?
Absolutely. The Eaton 4509-BOX 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 Eaton 4509-BOX?
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 Eaton 4509-BOX from ZenSupply?
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