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Silver iron reducing bushing with threaded ends, 3.500 length

Appleton Century Crofts

Appleton Century Crofts Reducing Bushing 1 1/2; 3in RB300-150 Conduit

SKU CH-VM0H-X9CED

Iron reducing bushing adapts 3 in male to 1 1/2 in female conduit threads for hazardous locations

  • Product typeConduit Fittings
  • Color and finishSilver
  • Main materialHAWA
  • Overall length3.5
  • Reduces conduit size from 3 in to 1 1/2 in for flexible routing
  • Rated for hazardous locations Class I Division 1 and 2 Groups B C D
  • Iron construction with chromate powder coat electroplated finish resists corrosion
  • Female to male NPT threads ensure secure conduit connections
  • Weighs 1.42 lb for manageable installation

Conduit Reducing Bushing 1-1/2 to 3 Inch

This iron reducing bushing connects 1-1/2 inch female threaded conduit to 3 inch male threaded conduit in hazardous locations. It suits electricians and maintenance crews running IMC or threaded RMC where Class I Division 1 and 2, Groups B, C, D or Class II Division 1 and 2, Groups E, F, G ratings are required. The fitting is not for buyers who need a straight coupling or a non-hazardous location reducer.

Sustained Load Behaviour

Chromate, powder coat and electroplated finishes protect the iron body from corrosion during long exposure in harsh industrial atmospheres. The 1.42 lb mass and 1 5/16 in overall length indicate a solid wall that resists mechanical stress and vibration without deforming. It is not for installations that demand a lighter aluminium or non-metallic body to reduce weight on extended conduit runs.

Build and Mounting Implications

Female NPT to male NPT threads allow direct engagement with standard conduit hubs and enclosures, so no extra adapters are needed. The silver chromate surface aids visual inspection for damage during routine checks. It is not for applications requiring a set-screw or compression connection instead of threaded engagement.

How it compares

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

Price $19.99
Cheaper than about 59% of the 1,290 comparable items (median $28.99).

Specifications

Product
Brand nameAPPLETON ELECTRIC
Product typeConduit Fittings
Color and finishSilver
Size & build
Main materialHAWA

Questions about this item

How much heat does the 1.42 lb iron body dissipate when the RB300-150 runs continuously in a hazardous location?

The chromate, powder-coat and electroplated iron construction conducts heat away from the conduit without active cooling, and the mass of the bushing itself acts as a passive heat sink during all-day operation.

What conduit and threading must already be in place for the 3 in MNPT male end to connect?

The bushing requires a 3 in threaded rigid metal conduit (RMC) or intermediate metal conduit (IMC) opening with matching male NPT threads, and the female side accepts 1 1/2 in FNPT fittings.

Will the Class I Division 1 rating hold when the RB300-150 joins older 1 1/2 in FNPT fittings already installed?

Yes, the hazardous-location rating covers Class I Division 1 and 2, Groups B, C, D and Class II Division 1 and 2, Groups E, F, G, so it maintains compliance when mated to existing 1 1/2 in FNPT components.

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