Thomas & Betts 8851 Threadless Connectors NSB

Description:

The Thomas & Betts 8851 Threadless Connector Nsb is used to connect and effectively bond 3-1/2 inch rigid metal conduit (RMC) or intermediate metal conduit (IMC) to electrical boxes and enclosures without requiring conduit threading. Commonly installed in industrial facilities, manufacturing plants, commercial buildings, utility installations, and electrical distribution systems, this threadless connector 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 installations. 

Applications:

The Thomas & Betts 8851 is designed to terminate or couple 3-1/2 inch threadless rigid metal conduit and IMC in heavy-duty electrical raceway systems. Its malleable iron body and split steel ring with diagonal serrations create a permanent, concrete-tight connection while ensuring positive electrical bonding. The connector is ideal for switchgear, motor control centers, industrial machinery, process equipment, utility installations, and commercial electrical systems where conduit threading is impractical or unnecessary. 

Technical Specifications:

• Manufacturer Part Number (MPN): 8851
• Brand: Thomas & Betts (ABB) – T&B Rigid Fittings
• Product Type: Threadless Connector
• Trade Size: 3-1/2 in.
• Conduit Type: Rigid Metal Conduit (RMC) / Intermediate Metal Conduit (IMC)
• Connection Type: Threadless Connector
• Material: Malleable Iron
• Construction: Split Steel Ring with Diagonal Serrations
• Installation: Wrench Tightened, Concrete-Tight
• Application: Connects and effectively bonds threadless RMC/IMC to electrical boxes and enclosures or couples ends of threadless conduit
• Standards: UL Listed (UL File E23018), CSA Certified
• Compliance: RoHS Compliant, REACH Compliant, TSCA Section 6(h) Compliant
• UPC: 786210088518
• ABB Product ID: 7TAD013170R0052
• Features: Eliminates conduit threading, provides permanent mechanical retention, positive electrical grounding, corrosion-resistant malleable iron construction, and approved for concrete-tight installations.

Common Replacements:

• Thomas & Betts 8821
• Thomas & Betts 8971
• Appleton TTC-350