Pass & Seymour L520FI Turnlok ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$36.79
Pass & Seymour L520FI Turnlok Flanged Inlet, 20A, Gray

Pass & Seymour L520FI Turnlok Flanged Inlet, 20A, Gray

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Model: L520-FI

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

$36.79
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Pass & Seymour L520FI Turnlok Flanged Inlet, 20A, Gray

The Pass & Seymour L520FI Turnlok® Flanged Inlet is a 20A heavy-duty power-connection inlet built for demanding commercial and industrial applications, and this page offers the Turnlok flanged inlet family across wire count and voltage configurations — from a 3-Wire, 125V setup to a 4-Wire, 125/250V setup — so installers can select the configuration that matches their power distribution requirements. Every configuration shares a high-impact thermoplastic housing that withstands on-the-job abuse, along with high-grade brass interior contacts for reliable physical and electrical integrity. The flange face clearly displays ratings and NEMA configuration markings for fast identification during installation and use, and every option in this family is cULus Listed for code-compliant performance. Finished in gray, this inlet is part of the Pass & Seymour L Series line of heavy-duty flanged inlets and outlets.

Key Features

  • Configuration Range: available as a 3-Wire, 125V or 4-Wire, 125/250V Turnlok® flanged inlet to match the power distribution setup required.
  • Amperage Rating: 20A rated across the family for reliable power connection performance.
  • Durable Construction: high-impact thermoplastic housing resists on-the-job abuse and physical damage in demanding environments.
  • Brass Interior Components: high-grade brass contacts maintain physical and electrical integrity over repeated use.
  • Fast Identification: ratings and NEMA configuration are clearly marked on the flange face for quick visual ID while in use.
  • Twist-Locking Design: Turnlok® mechanism provides a secure, vibration-resistant power connection.
  • Finish/Color: gray housing for consistent appearance across industrial and commercial installations.

Certifications & Compliance

  • cULus Listed

Technical Specifications

  • Amperage Rating: 20A
  • Country of Origin: Mexico
  • Configuration Options: 3-Wire, 125V or 4-Wire, 125/250V

Typical Applications

  • Commercial and Industrial Power Distribution
  • Generator and Portable Power Connections
  • Heavy-Duty Equipment Power Inlets
  • Panelboard and Load Center Wiring Interfaces
  • Renovation and New Construction Electrical Installations

Why Pass & Seymour?

Pass & Seymour engineers the L520FI Turnlok® flanged inlet family with a high-impact thermoplastic housing and high-grade brass interior components for dependable physical and electrical integrity in demanding environments, across both the 3-Wire, 125V and 4-Wire, 125/250V configurations. Clearly marked NEMA configuration and ratings on the flange face support fast, accurate field identification, and cULus Listing backs the suitability of every option for code-compliant commercial and industrial power connections.

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Product Specs

list_batch:
PASS-20260820
Product Type:
Power Inlet
Voltage Rating:
125V
Amperage Rating:
20A
Configuration:
Turnlok
Listing:
cULus
Product Material:
Thermoplastic
Product Color:
Gray
Department:
Electrical
Product Group:
Wiring Devices
Product Subgroup:
Plugs & Connectors

Pass & Seymour L520-FI – Frequently Asked Questions

1) What is the difference between the L520-FI and L1420-FI Turnlok flanged inlets?
Both are 20A Turnlok flanged inlets in gray thermoplastic, and the difference is the wire count and voltage. The L520-FI is 3-wire, 125V (single phase, hot/neutral/ground). The L1420-FI is 4-wire, 125/250V, which gives you two hots, a neutral and a ground for equipment or generator feeds that need both 125V and 250V legs. Pick by what your distribution actually supplies, because the two locking configurations are not interchangeable with each other's mating plugs.
2) Will a Turnlok flanged inlet accept a standard straight-blade cord cap?
No. The L520FI family is a twist-locking (Turnlok) device, so it only mates with a locking connector of the matching NEMA configuration. A straight-blade 5-20 cord cap will not engage it. The L520-FI takes a 3-wire 125V locking connector and the L1420-FI takes a 4-wire 125/250V locking connector. The NEMA configuration and ratings are marked on the flange face, so you can confirm the match in the field before you pull a cord.
3) Can I use the 20A Turnlok flanged inlet on a 30A generator cord?
No. The L520FI family is rated 20A, and a 30A locking cord cap is a different NEMA configuration that will not mate with it. Running a 30A source into a 20A device also puts the inlet past its rating. For a 30A feed you need a 30A inlet in the matching configuration.
4) What is the closest alternative to the Pass & Seymour L520-FI twist-lock flanged inlet from another brand?
The Bryant 70520MB is a 70 Series flanged inlet with a NEMA locking-style configuration, which puts it in the same class of part as the Pass & Seymour L520-FI Turnlok flanged inlet rated 20A at 125V. Both are panel-mounted locking inlets that accept a twist-lock cord connector rather than a straight-blade plug. Confirm the NEMA configuration marked on the flange matches the cord cap already in service before you order either one, since a locking inlet only mates with the matching configuration.
5) Which flanged inlet should I specify if the job calls for a specification-grade device?
The Bryant 7595MB is listed as specification-grade and is a NEMA ML-2 2-pole flanged inlet, so it is the one to quote when the drawing calls out spec grade and an ML-2 configuration. The Pass & Seymour L520-FI family is built on a high-impact thermoplastic housing with high-grade brass interior contacts and is cULus Listed, in Turnlok configurations. The deciding factor is the NEMA configuration: ML-2 is a different mating pattern than the L5-20 and L14-20 Turnlok patterns, so the two are not interchangeable at the cord.
6) Is the Bryant 7595MB a drop-in substitute for a Pass & Seymour Turnlok flanged inlet?
No. The Bryant 7595MB is a NEMA ML-2 2-pole flanged inlet, a midget locking pattern, while the Pass & Seymour Turnlok flanged inlets covered by the L520-FI family are supplied as 3-Wire 125V and 4-Wire 125/250V devices rated 20A. A cord cap wired for one pattern will not twist into the other, so treat the 7595MB as a different device rather than a replacement, and match the configuration marked on the flange face.
7) Why use a flanged inlet instead of a receptacle for a generator or equipment power feed?
A flanged inlet is a male device mounted on the enclosure or panel, so power flows into the equipment through it. That is what you want when the equipment is fed by a portable source such as a generator or a cord drop: the cord carries a female locking connector and the live parts stay shielded. A receptacle in that spot would leave energized pins exposed on the cord end. The Pass & Seymour Turnlok inlet mounts through a flange and locks the connection against vibration, which is why it shows up on heavy-duty equipment inlets and panelboard wiring interfaces.
8) Is the Pass & Seymour L520FI inlet listed for commercial and industrial code work?
It carries a cULus Listing, which covers it for both US and Canadian installations. That applies to the 3-wire 125V and the 4-wire 125/250V versions alike. Ratings are printed on the flange face for inspection without pulling the device.
9) What other brand flanged locking inlets are comparable to the Pass & Seymour Turnlok?
Bryant makes a direct set of locking-style flanged inlets we stock: the Bryant 70520MB from the 70 Series and the 71020MB from the 7 Series, both NEMA locking-style flanged inlets. If your opening uses an ML-2 two-pole configuration instead, the Bryant 7595MB is a specification-grade ML-2 flanged inlet, and that is a different pin pattern entirely, not a substitute for a 20A Turnlok device. Match on NEMA configuration first, then amperage.
10) What is the difference between the Bryant 71020MB and the Pass & Seymour L520-FI flanged inlet?
The Bryant 71020MB is a 7 Series flanged locking inlet, while the Bryant 70520MB sits in the 70 Series; both are locking-style inlets like the Pass & Seymour Turnlok devices. The Pass & Seymour side is offered as a 3-Wire 125V or 4-Wire 125/250V Turnlok inlet at 20A in gray, with the ratings and NEMA configuration printed on the flange face for field ID. Choose by the NEMA configuration your generator or equipment cord already uses.
11) Will the housing hold up in a wash-down shop or on a job site where it takes hits?
The housing is high-impact thermoplastic, which is what resists the knocks and dropped-tool abuse these see on equipment skids and temp power. The current-carrying interior parts are high-grade brass, so repeated plug cycles keep good contact pressure. Nothing in the specs covers a wet-location or enclosure rating, so treat it as a heavy-duty general industrial device and use a suitable cover or enclosure if the location demands one.
12) Do both configurations come in the same color so they match the rest of my devices?
Gray on both the L520-FI and the L1420-FI, so a facility standardizing on these gets a consistent look across mixed 125V and 125/250V inlets.
How fast can I get the Pass & Seymour L520-FI 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 L520-FI come with a warranty?
Absolutely. The Pass & Seymour L520-FI 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 L520-FI?
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 L520-FI from ZenSupply?
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