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Blue thermoplastic single-pole male plug with rounded Insulgrip housing and double cam design

Hubbell Incorporated

Hubbell Incorporated HBL400MBL straight blade plug 400 amp 600 VAC 250 VDC blue

SKU CH-9S76-K84KX

A 400-amp single-pole plug rated for 600 VAC and 250 VDC with Insulgrip housing for secure handling in temporary power distribution

  • TypePlug Adapters
  • 400 A capacity handles heavy-duty temporary power
  • 600 V AC / 250 V DC rating suits demanding distribution
  • Insulgrip housing gives secure grip even with gloves
  • Rounded corners reduce snagging on structures or equipment
  • Double cam design with stress relief eases assembly

400-amp single-pole plug

The Hubbell HBL400MBL is a straight-blade male plug rated for 400 amps at 600 volts AC and 250 volts DC. It accepts cable sizes from Number 4 through 4/0 and uses a thermoplastic elastomer housing with an Insulgrip profile. The device targets temporary power distribution for entertainment, theme-park, carnival, concert and film-production applications. No special tools are required for assembly or disassembly.

Thermoplastic housing and cam design

The TPE Insulgrip housing conforms to the hand for secure grip even with gloves on, while rounded corners reduce snagging on structures or equipment. A double cam design with a stress-relief hole eases connection and disconnection. A non-conductive retaining screw locks contacts in place and prevents movement inside the housing during normal use.

Temporary power distribution fit

The single-pole format plugs directly into matching Hubbell receptacles to build temporary feeders for stage lighting, ride power or location shoots. Tool-free assembly speeds deployment and teardown on site. The blue housing gives a visual cue that devices are properly mated. Installers needing multi-pole connectors or permanent-mount inlets will need a different product family.

Highlights

  • 400 A capacity handles heavy-duty temporary power
  • 600 V AC / 250 V DC rating suits demanding distribution
  • Insulgrip housing gives secure grip even with gloves
  • Rounded corners reduce snagging on structures or equipment
  • Double cam design with stress relief eases assembly

Specifications

TypePlug Adapters

Questions about this item

How do I install the Hubbell HBL400MBL plug onto 2/0-4/0 cable without special tools?

Strip the cable, insert the conductor into the contact barrel, then tighten the non-conductive retaining screw to lock the contact inside the Insulgrip housing.

What part of the Hubbell HBL400MBL will need replacement after repeated mating cycles?

The male contact tip and the retaining screw are the wear items; inspect them for pitting or thread damage before each use.

At what continuous current does the Hubbell HBL400MBL reach its thermal limit first?

The 400 amp rating is the maximum continuous current; sustained loads at or above this value will hit the thermal limit of the contact interface.

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