Thomas & Betts 8524 Set Screw Coupling Rigid Conduit Fittings Ea Nsb

Description:

The Thomas & Betts 8524 Set Screw Coupling NSB is used to join and effectively bond 1-1/2 inch rigid metal conduit (RMC) or intermediate metal conduit (IMC) where conduit sections cannot be rotated during installation. Commonly installed in industrial facilities, commercial buildings, manufacturing plants, and utility electrical systems, this threadless coupling provides a secure mechanical connection and reliable grounding continuity. Maintenance teams and electrical contractors use this fitting for repair, retrofit, expansion, and replacement of rigid conduit systems. 

Applications:

The Thomas & Betts 8524 is designed to couple 1-1/2 inch rigid metal conduit and IMC using captive set screws, eliminating the need to thread conduit ends. Its steel construction provides a concrete-tight connection while ensuring positive mechanical retention and electrical bonding. The coupling is ideal for electrical raceway installations in switchgear, motor control centers, industrial machinery, commercial buildings, and other applications where conduit rotation is not possible. 

Technical Specifications:

• Manufacturer Part Number (MPN): 8524
• Brand: Thomas & Betts (ABB) – T&B Rigid Fittings
• Product Type: Set Screw Coupling
• Trade Size: 1-1/2 in.
• Conduit Type: Rigid Metal Conduit (RMC) / Intermediate Metal Conduit (IMC)
• Installation Type: Threadless Set Screw
• Material: Steel
• Finish: Zinc Electroplated Chromate Coating / Galvanized Zinc
• Connection Type: Coupling
• Construction: Concrete-Tight
• Application: Couple and effectively bond threaded ends of RMC/IMC where neither conduit length can be rotated; suitable for joining conduit or connecting to threadless openings in boxes and enclosures
• Standards: UL Listed (UL File E23018), CSA Certified
• ETIM Classification: EC000939 – Coupler for Installation Tubes
• Compliance: RoHS 3 Compliant, TSCA Section 6(h) Compliant
• UPC: 786210085241
• Features: Captive hex-head set screws, positive holding strength, reliable ground continuity, eliminates conduit threading, corrosion-resistant steel construction, and approved for concrete-tight installations.

Common Replacements:

• Thomas & Betts 8424
• Thomas & Betts 8624
• Thomas & Betts 8523