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Silver iron reducing bushing with threaded ends, 3.500 length

Appleton Century Crofts

Appleton Century Crofts Reducing Bushing 2 1/2 3in RB300-250 Conduit

SKU CH-8DQG-CZ6GG

Reduces conduit from 3 in to 2 1/2 in with hazardous-location rated iron construction

  • TypeConduit Fittings
  • Color/FinishSilver
  • MaterialHAWA
  • Length3.500
  • Reduces conduit from 3 in to 2 1/2 in trade size
  • Iron construction with chromate, powder and electroplated finish for corrosion resistance
  • Certified for hazardous locations Class I Div 1/2 Groups B C D
  • Female to male NPT threads enable secure IMC and RMC connections
  • Compact 1 7/16 in overall length fits tight enclosures

Reducing Bushing for Hazardous Locations

This iron reducing bushing connects 2 1/2 in FNPT to 3 in MNPT threaded conduit. It is rated for Class I Division 1 and 2, Class I Zone 1 and 2, Class II Division 1 and 2, and Class III hazardous areas. Electrical contractors use it to step down conduit trade sizes in rigid metal or IMC systems. The chromate, powder and electroplated finish resists corrosion in harsh industrial environments.

Sustained Load Behaviour in Conduit Systems

The fitting maintains its hazardous-location seal under continuous vibration and thermal cycling typical of heavy industrial plants. Iron construction and the multi-layer coating prevent thread galling during repeated assembly and disassembly. It remains mechanically secure when conduit runs expand or contract over long operating periods. The 1 7/16 in overall length keeps the joint compact inside crowded enclosures.

Build Quality and Daily Installation

Weighing .83 lb, the bushing feels solid when handled on site and threads engage smoothly without binding. The silver finish makes thread engagement visible in low light, reducing cross-threading risk. Female-to-male orientation lets installers reduce a 3 in hub down to 2 1/2 in conduit without extra couplings. It is not suited for applications requiring non-metallic or explosion-proof sealed fittings.

Highlights

  • Reduces conduit from 3 in to 2 1/2 in trade size
  • Iron construction with chromate, powder and electroplated finish for corrosion resistance
  • Certified for hazardous locations Class I Div 1/2 Groups B C D
  • Female to male NPT threads enable secure IMC and RMC connections
  • Compact 1 7/16 in overall length fits tight enclosures

Specifications

TypeConduit Fittings
BrandAPPLETON ELECTRIC
Color/FinishSilver
MaterialHAWA
Length3.500

Questions about this item

How much heat does the RB300-250 generate when installed in a conduit run all day?

The iron bushing is a passive fitting with no electrical load, so it produces no measurable heat during continuous operation.

What conduit and threading must already be in place for the RB300-250 to connect correctly?

You need 3 in male NPT threads on one side and 2 1/2 in female NPT threads on the other, matching IMC or threaded RMC conduit.

Will the RB300-250 thread onto existing 2 1/2 in and 3 in rigid metal conduit without re-threading?

Yes, the 2 1/2 in FNPT by 3 in MNPT ends are cut to standard NPT taper for direct engagement with legacy RMC or IMC.

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