Thomas & Betts H125GR-TB Grounding Conduit Hub

Description:

The Thomas & Betts H125GR-TB Grounding Hub is used to provide a watertight, electrically bonded connection between threaded rigid metal conduit or IMC and threadless enclosures in commercial and industrial electrical systems. Commonly installed in control panels, switchgear, motor control centers, outdoor enclosures, hazardous locations, and power distribution equipment where secure conduit termination and grounding are required. Maintenance electricians, OEM manufacturers, and system integrators use this grounding hub for new installations, equipment maintenance, retrofit projects, and replacement of existing conduit hubs.

Applications:

The Thomas & Betts H125GR-TB is designed to connect 1-1/4-inch threaded rigid metal conduit (RMC) or intermediate metal conduit (IMC) to threadless openings in electrical enclosures while providing a positive grounding path and a watertight seal. Its zinc construction, molded thermoplastic insulating throat, and embedded nitrile sealing ring help protect conductor insulation from abrasion while preventing moisture ingress. The hub is suitable for commercial, industrial, and hazardous location installations requiring dependable conduit bonding and environmental protection.

Technical Specifications:

• Brand: Thomas & Betts (ABB) – T&B® Rigid Fittings
• Part Number: H125GR-TB
• Product Type: Grounding Conduit Hub
• Trade Size: 1-1/4 in.
• Material: Zinc Die-Cast Hub and Locknut
• Insulating Throat: Molded Thermoplastic, 105°C, UL 94 V-0 Rated
• Sealing Ring Material: Nitrile (BUNA-N)
• Connection Type: Threaded NPT
• Compatible Conduit: Rigid Metal Conduit (RMC) and Intermediate Metal Conduit (IMC)
• Installation: Threadless Boxes and Enclosures
• Features: Integrated grounding locknut, thermoplastic insulated throat, watertight seal, corrosion-resistant zinc construction
• Hazardous Location Rating: Suitable for Class I, Division 2; Class II, Division 1 & 2; Class III locations (per applicable NEC/CEC requirements)
• Standards: UL Listed (File E23018), CSA Certified
• Compliance: RoHS3 Compliant
• Typical Applications: Control Panels, Switchboards, Motor Control Centers, Outdoor Enclosures, Industrial Machinery, Hazardous Location Electrical Systems.

Common Replacements:

• Thomas & Betts H100GR-TB
• Thomas & Betts H150GR-TB
• Thomas & Betts H125GRA-TB