Thomas & Betts WA-151 Reducing Washer for Outlet Box

Description:

The Thomas & Betts WA-151 Reducing Washer is used to adapt a larger knockout opening to accept a smaller conduit fitting, ensuring a secure and professional conduit installation. Commonly installed in outlet boxes, junction boxes, pull boxes, panels, and electrical enclosures in commercial, industrial, and utility electrical systems using rigid metal conduit (RMC) or intermediate metal conduit (IMC). Maintenance electricians, contractors, and system integrators use this reducing washer for new installations, equipment maintenance, retrofits, and replacement of conduit box accessories.

Applications:

The Thomas & Betts WA-151 is a Steel City® reducing washer manufactured from zinc-plated steel for excellent corrosion resistance and long service life. It is designed to reduce a 1-1/2-inch knockout to accommodate a 1/2-inch conduit fitting, allowing installers to use existing oversized knockouts without replacing the enclosure. The washer is ideal for electrical panels, outlet boxes, junction boxes, switchgear, industrial control panels, and commercial wiring installations requiring secure conduit transitions.

Technical Specifications:

• Brand: Thomas & Betts (ABB) – Steel City®
• Part Number: WA-151 (WA151)
• Product Type: Reducing Washer / Outlet Box Accessory
• Knockout Reduction: 1-1/2 in. to 1/2 in.
• Compatible Conduit: Rigid Metal Conduit (RMC) and Intermediate Metal Conduit (IMC)
• Material: Steel
• Finish: Zinc Plated
• Inside Diameter: 7/8 in.
• Outside Diameter: 2-5/8 in.
• Application: Reduces oversized box knockouts for smaller conduit fittings
• Installation: Fits inside electrical boxes, enclosures, and cabinets
• Suitable For: Outlet boxes, junction boxes, pull boxes, panels, and electrical enclosures
• Corrosion Resistance: Zinc-plated finish for indoor and protected outdoor environments
• Certifications: CSA Certified
• Product Family: Steel City® Outlet Box Covers & Accessories

Common Replacements:

• Thomas & Betts WA-152
• Thomas & Betts WA-201
• Thomas & Betts WA-251