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Gray industrial twist-lock receptacle with safety shroud, surface-mount design, impact-modified PBT housing

Hubbell Incorporated

Hubbell Incorporated HBL2420SR 20A Twist-Lock Receptacle 3P 4W 250VAC video accessory

SKU CH-M9AQ-G2HNW

A 20A twist-lock receptacle rated for 250V AC three-phase power with IP20 protection

  • TypeSafety Shroud Twist Lock
  • ColorGray
  • 20 A twist-lock rating powers three-phase equipment
  • Shrouded NEMA L15-20R design prevents accidental contact
  • Impact-modified PBT housing resists corrosion and abuse
  • NEMA 12, 4 and 4X ratings seal out dust and water
  • Industrial-grade construction meets UL and CSA standards

Industrial Power Connection

The Hubbell HBL2420SR is a 20A twist-lock receptacle built for three-phase 250V AC circuits. Its shrouded safety design and impact-modified PBT housing suit industrial equipment that demands a secure, corrosion-resistant connection rated to NEMA 12, 4 and 4X standards.

Thermal and Electrical Behaviour

The device carries a 20 amp continuous rating with a 3.0 horsepower motor load capability. UL and CSA listings confirm compliance for the stated voltage and phase configuration. The L15-20R NEMA layout ensures correct mating with matching plugs under normal operating conditions.

Installation and Compatibility

Surface-mount wiring style simplifies attachment to junction boxes or equipment enclosures. The four-wire, three-pole arrangement serves 250V three-phase loads without a neutral requirement. Grey colour coding aids quick identification in multi-voltage panels. Buyers needing a different amperage, voltage or pin configuration should select an alternative NEMA device.

Highlights

  • 20 A twist-lock rating powers three-phase equipment
  • Shrouded NEMA L15-20R design prevents accidental contact
  • Impact-modified PBT housing resists corrosion and abuse
  • NEMA 12, 4 and 4X ratings seal out dust and water
  • Industrial-grade construction meets UL and CSA standards

Specifications

BrandHubbell Wiring Device-Kellems
ModelHBL2420SR
TypeSafety Shroud Twist Lock
ColorGray

Questions about this item

How is the HBL2420SR surface-mounted and which wiring step is often missed?

Mount the gray Impact Modified PBT housing to a flat surface, then terminate four conductors under the standard screw terminals; the step often missed is confirming the 3-pole 4-wire L15-20R phase rotation before tightening.

What maintenance or replacement will the HBL2420SR need over time?

Inspect the shrouded contacts and corrosion-resistant PBT body periodically; replace the receptacle if the twist-lock mechanism no longer secures the plug or if the NEMA 4X/IP20 seal shows cracking.

What limit appears first when the HBL2420SR runs at full 20 A 250 V AC three-phase load?

The 3.0 HP motor rating is the first ceiling; sustained draw at 20 A on all three poles will hit the horsepower limit before the 20 A thermal rating trips.

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