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White nylon flanged inlet with brass blades and screw terminals

Hubbell Incorporated

Hubbell Incorporated HBL5478C Flanged Inlet 20A 250V AC 2-Pole 3-Wire

SKU CH-1S0E-0K25Q

A panel-mount flanged inlet rated 20A 250V AC with backwired screw terminals for #18-#10 AWG copper wire

  • Color familyWhite
  • Product typeWiring Devices
  • Rated 20 A 250 V AC for heavy-duty power connections
  • Panel-mount flange with included screws for secure installation
  • Back-wired screw terminals accept 18-10 AWG copper conductors
  • UL 94 V-2 nylon housing resists flame and high heat
  • UL listed and CSA certified to NEMA 6-20R standard

Panel-Mount Inlet for 20 A Service

The Hubbell HBL5478C is a flanged inlet rated for 20 amps at 250 volts AC. It provides a NEMA 6-20R single-phase, 2-pole, 3-wire grounding connection for industrial equipment. The device is UL listed and CSA certified for use in demanding environments.

Nylon Housing with Brass Contacts

The body uses a nylon and polycarbonate housing rated UL94 V-2 for flammability resistance. Brass blades and terminal screws accept #18 to #10 AWG copper conductors via backwired screw terminals. Panel mounting screws are included for secure installation.

Replaces Hard-Wired Power Entry

This inlet replaces a permanent cable connection where a detachable cord set is preferred for service or relocation. The jump is worth it when equipment must be disconnected quickly without tools. It does not suit applications requiring a NEMA 5-20 or higher amperage configuration.

How it compares

Measured against everything we stock in Electrical Switches & Dimmers, at today’s prices. Recalculated every night.

Price $26.99
Cheaper than about 68% of the 791 comparable items (median $39.99).

Specifications

Product
Brand nameHUBBELL WIRING DEVICE-KELLEMS
Color familyWhite
Product typeWiring Devices

Questions about this item

What NEMA configuration does the HBL5478C flanged inlet use, and what amperage does it cap at?

It complies with the NEMA 6-20R standard and is rated for 20 A at 250 V AC.

What panel cut-out and mounting hardware does the HBL5478C require?

The round flanged body mounts with the included screws; the housing accepts #18-#10 AWG copper conductors.

How do you terminate wires on the backwired screw terminals, and what mistake should you avoid?

Strip the conductor, insert it into the backwired terminal, and tighten the brass screw — do not overtighten beyond the terminal’s design.

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