Thomas & Betts 3883 Insulated Grounding Bushing

Description:

The Thomas & Betts 3883 Insulated Grounding Bushing is used to provide grounding and conductor protection for 1-1/4-inch rigid metal conduit (RMC) and intermediate metal conduit (IMC). Commonly installed in switchgear, panelboards, transformers, industrial facilities, and commercial electrical systems, this threaded grounding bushing features a lay-in grounding lug for #8 AWG to 2/0 AWG conductors and a thermoplastic insulated throat to prevent conductor insulation damage. Maintenance teams and system integrators use this fitting for repair, retrofit, expansion, and replacement of conduit grounding and bonding connections.

Applications:

The Thomas & Betts 3883 is designed for bonding and grounding 1-1/4-inch rigid and IMC conduit while protecting conductors from abrasion at conduit terminations. Its lay-in lug allows quick installation of bonding jumpers without disconnecting conductors, making it ideal for commercial buildings, industrial plants, substations, OEM equipment, and utility power distribution systems.

Technical Specifications:

• Manufacturer Part Number (MPN): 3883
• Brand: Thomas & Betts (ABB)
• Product Type: Insulated Grounding Bushing
• Trade Size: 1-1/4 in.
• Compatible Conduit: Rigid Metal Conduit (RMC), Intermediate Metal Conduit (IMC)
• Wire Range: #8 AWG to 2/0 AWG Copper/Aluminum
• Lug Type: Lay-In Grounding Lug
• Material: Malleable Iron
• Finish: Electro Zinc Plated
• Insulator Material: Thermoplastic
• Throat Diameter: 1.242 in.
• Outside Diameter: 2.19 in.
• Bushing Height: 0.735 in.
• Lug Length: 1.675 in.
• Swing Radius: 1.935 in.
• Installation Type: Threaded
• Features: Thermoplastic insulated throat, quick lay-in lug installation, protects conductor insulation, suitable for bonding multiple metal conduits, durable cast body prevents insulator displacement
• Certifications: UL Listed (File E3060), CSA Certified
• Typical Applications: Switchgear, Panelboards, Transformers, Junction Boxes, Industrial Control Panels, Commercial Buildings, Utility Power Distribution, Grounding and Bonding Systems

Common Replacements:

• Thomas & Betts 3882
• Thomas & Betts 3884
• Thomas & Betts 3885