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Gray cylindrical pin-and-sleeve plug with screw-on cap, 2.55 in face diameter, 30 A 600 V AC

Appleton Century Crofts

Appleton Century Crofts CPH3034BC Pin & Sleeve Plug 30A 4P 3W Alum 600VAC line protection

SKU CH-ST4N-421TN

A pin-and-sleeve plug rated 30 A, 600 V AC, with four poles, three wires and an aluminium housing for hazardous-location use

  • Rated for 600V AC three-phase power
  • 30 A current capacity handles heavy loads
  • Hazardous-location rated Class I Div 1/2 Groups B C D
  • Aluminum housing with 2.55 in face diameter
  • Accepts cable diameters from .5 to 1.125 in

30 A 600 VAC hazardous-location plug

The Appleton Century Crofts CPH3034BC is a 30 A, 4-pole, 3-wire pin-and-sleeve plug rated for 600 VAC three-phase power. Its aluminium housing meets Class I Division 1 and 2 Groups B, C, D, Class II Division 1 and 2 Groups F, G and Class III Division 1 and 2 hazardous-location specifications. The straight-orientation body accepts cable diameters from .5 in to 1.125 in and terminates with wire leads under a screw-on cap.

Sustained industrial duty performance

The grounded Style 2 construction and 2.55 in face diameter maintain secure contact during continuous three-phase loads in wet, corrosive or explosive atmospheres. Aluminium housing resists impact and chemical exposure better than non-metallic alternatives, while the screw-on cap prevents accidental disengagement under vibration or cable tension. Wire-lead termination eliminates loose terminal screws that can overheat during extended operation.

Replaces worn hazardous-area connectors

This plug replaces damaged or non-compliant pin-and-sleeve devices in Class I, II and III Division 1 and 2 locations where 30 A 600 VAC three-phase service is required. The jump is worth it when existing connectors lack the correct hazardous-location rating, show contact pitting from arcing, or cannot accommodate the .5 in to 1.125 in cable range needed for the installation.

How it compares

Measured against everything we stock in Breakers & Circuit Protection, at today’s prices. Recalculated every night.

Price $499.99
Pricier than about 90% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameAPPLETON ELECTRIC

Questions about this item

Does the CPH3034BC plug generate noticeable heat or noise when running at its 30 A rating all day?

The plug is a passive connector with no moving parts or active electronics, so it produces no audible noise and negligible heat under normal 30 A continuous operation.

What cable diameter range must I already have to terminate the CPH3034BC correctly?

The plug accepts cables from 0.5 in to 1.125 in outer diameter, so your existing cable must fall within that range for a proper fit.

Will the CPH3034BC mate with an older Appleton receptacle that also has a 2.55 in face diameter?

Yes, the 2.55 in face diameter matches the standard interface for this series, allowing direct connection to compatible legacy receptacles of the same rating.

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