Thomas & Betts 681AL Threaded Conduit Coupling

Description:

The Thomas & Betts 681AL Threaded Conduit Coupling is used to connect and bond 2-1/2 inch threaded rigid metal conduit (RMC) and intermediate metal conduit (IMC) where neither conduit can be rotated during installation. Commonly installed in industrial facilities, commercial buildings, power distribution systems, manufacturing plants, and utility installations, this aluminum three-piece coupling provides a secure, rigid, and vibration-resistant conduit connection. Maintenance teams and electrical contractors use this fitting for repair, retrofit, expansion, and replacement of threaded conduit systems.

Applications:

The Thomas & Betts 681AL is designed for joining 2-1/2 inch threaded rigid metal conduit and IMC in applications where rotating either conduit is impractical. Its ERICKSON® three-piece design allows conduit runs to be assembled or disassembled without disturbing the entire raceway. The copper-free aluminum construction provides excellent corrosion resistance while maintaining dependable electrical bonding. The coupling is concrete-tight, vibration-resistant, and suitable for commercial, industrial, utility, and outdoor electrical installations.

Technical Specifications:

• Manufacturer Part Number (MPN): 681AL
• Brand: Thomas & Betts (ABB) – ERICKSON®
• Product Type: Threaded Conduit Coupling
• Trade Size: 2-1/2 in.
• Conduit Type: Rigid Metal Conduit (RMC) and Intermediate Metal Conduit (IMC)
• Coupling Style: Three-Piece ERICKSON® Coupling
• Material: Copper-Free Aluminum
• Finish: Natural Aluminum
• Connection Type: Threaded
• Construction: Concrete-Tight
• Overall Length: 2-11/16 in.
• Outside Diameter: 3-31/32 in.
• Application: Joining threaded conduit where neither conduit can be rotated
• Standards: UL 514B, UL File E23018, CSA C22.2 No. 18, NEMA FB1, Federal Specification A-A-50553
• Compliance: RoHS 3 Compliant, REACH Compliant, TSCA Section 6(h) Compliant
• Features: Free-fitting threads for easy assembly, rigid in-line connection, vibration-resistant design, suitable for concrete-tight installations, and capable of maintaining grounding continuity.

Common Replacements:

• Thomas & Betts 680AL
• Thomas & Betts 682AL
• Thomas & Betts 681