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Gray metal interlock plug with four poles and three wires

SQUARE D

SQUARE D Interlock Plug 60 A 600 V AC 250 V DC 4-pole 3-wire 3-phase

SKU CH-SQ8T-ADBRY

A 60 A interlock plug rated for 600 V AC and 250 V DC with four poles, three wires and three-phase operation

  • TypeLight Switch
  • 60 A rating supports heavy-duty three-phase loads
  • 600 V AC and 250 V DC ratings cover industrial voltage ranges
  • 4-pole 3-wire configuration matches standard three-phase wiring
  • Metal housing with Style 2 grounding resists harsh environments
  • CSA certified and UL listed for code-compliant installations

Interlock Plug for Three-Phase Power

This interlock plug is built for industrial three-phase circuits where a secure, lockable connection is required. It carries a 60 A current rating and is rated for 600 V AC and 250 V DC. The four-pole, three-wire configuration suits standard three-phase loads. The grey metal housing meets CSA and UL safety listings for harsh environments.

Replacing Worn or Non-Locking Connectors

Use this plug to replace damaged or non-interlocking connectors on existing 60 A three-phase equipment. The upgrade is worth it when machinery demands a positive mechanical lock to prevent accidental disconnection under vibration. The Style 2 grounding arrangement matches legacy Square D receptacles already installed in many facilities. It does not serve single-phase or lower-voltage applications.

Behaviour Under Continuous Industrial Load

The metal housing and certified construction dissipate heat during sustained 60 A operation without deformation. Interlock mechanism engagement remains positive after repeated mating cycles in dusty or damp conditions. No reverse-service rating means the plug must be wired to the supply side only. CSA and UL listings confirm performance under continuous rated load.

Highlights

  • 60 A rating supports heavy-duty three-phase loads
  • 600 V AC and 250 V DC ratings cover industrial voltage ranges
  • 4-pole 3-wire configuration matches standard three-phase wiring
  • Metal housing with Style 2 grounding resists harsh environments
  • CSA certified and UL listed for code-compliant installations

Specifications

BrandSquare D
TypeLight Switch

Questions about this item

What mounting hardware does the metal interlock plug require?

The plug uses a metal housing with Style 2 grounding and four poles for three-phase wiring.

Which wiring step is most often missed when installing this three-phase plug?

Connecting all three phase conductors to the correct poles while observing the Style 2 grounding arrangement.

When should the CSA-certified, UL-listed plug be inspected or replaced?

Inspect the metal housing and contacts periodically; replace if the housing shows damage or the 60 A rating is exceeded.

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