Eaton H1040DC Throat Bushing - NEC/CEC Compliance
Part Number: H1040DC
Quick Summary
Eaton H1040DC throat bushing provides insulated threaded termination for 4 inch rigid/IMC conduit in non-hazardous facilities. Designed to reduce heat-related degradation and prevent premature insulation failure, it minimizes maintenance and downtime in aging installations. The product aligns with NEC/CEC standards for ordinary locations and carries Canadian certification for rigid/IMC bushings, supporting cross-border projects. Its zinc die-cast construction delivers rugged, long-term durability, while threaded connections simplify field assembly. Ideal for control panels, junction boxes, and equipment terminations in industrial settings, this bushing offers reliable performance with familiar installation practices and downstream cost savings through fewer fit-and-forget replacements.
Product Information
Extended Description
H1040DC Eaton Crouse-Hinds: Eaton Crouse-Hinds series throat bushing, Rigid/IMC, Insulated ,Zinc die cast, 150°C, Threaded, 4"
Product Name
Eaton Crouse-Hinds series throat bushing
Catalog Number
H1040DC
UPC
662277003803
Product Length/Depth
5.16 in
Product Height
2.03 in
Product Width
2.03 in
Product Weight
0.44 lb
Area classification
Ordinary/Non-Hazardous Locations
Standards type
NEC/CEC
Conduit type
Rigid/IMC
Insulator
Insulated
Thread
Threaded
Trade size
4"
Material
Zinc die cast
Temperature rating
150°C
Crouse-Hinds series Insulating and Throat Bushings - Rigid-IMC catalog page
Insulating and Throat Bushings - Rigid-IMC Canadian certification
Insulating and Throat Bushings - Rigid-IMC Canadian certification
Eaton Specification Sheet - H1040DC
Feature Insulated, high temperature rating Business Impact Maintains insulation integrity under demanding operation and high ambient temperatures, reducing the risk of insulation degradation and electrical faults. Application Use in control panels and motor control centers where 150°C rating protects conductors from heat buildup. Feature Rigid/IMC conduit compatibility with threaded connections Business Impact Simplifies installation, improving field speed and reducing leak paths. Application Suitable for terminal blocks and enclosure terminations in tight spaces where alignment is critical.Feature Zinc die cast material Business Impact Provides corrosion resistance and mechanical strength for harsh industrial environments, extending service life and reducing replacement cycles. Application Preferred in outdoor or shop-floor installations with exposure to vibration and contaminants.Feature 4\" trade size and compact dimensions Business Impact Supports standard conduit sizing while fitting into compact panel layouts, reducing the need for adapters and space modifications. Application Ideal for higher-capacity conduit runs in compact electrical rooms.Feature NEC/CEC compliance and ordinary-location certification Business Impact Ensures regulatory alignment across North America, simplifying procurement and cross-border project management. Application Suitable for non-hazardous facilities such as manufacturing floors, warehouses, and office-adjacent spaces.Feature 5.16 in length, 2.03 in width, 2.03 in height, 0.44 lb weight Business Impact Provides predictable handling and installation ergonomics, enabling faster install times and easier inventory planning. Application Fits standard knockout patterns in control panels and junction boxes.
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FAQs
When installing H1040DC, ensure a clean threaded interface, apply approved thread sealant as needed, and torque to the manufacturer’s specification to maintain a reliable seal. Use compatible 4" rigid/IMC conduit fittings and verify clean mating surfaces to prevent insulation damage. Keep assembly aligned to minimize stress on the insulating body and enclosure.
Yes. H1040DC is designed for 4" rigid/IMC conduit with an insulated body, suitable for ordinary-location installations. Its threaded connection supports straightforward field assembly, and the zinc die‑cast construction adds durability in typical industrial environments, improving overall reliability of terminations in non-hazardous areas.
H1040DC complies with NEC/CEC standards for ordinary locations and holds Canadian certification for rigid/IMC bushings. This cross-border validation supports projects in North America and aligns with common regulatory requirements for conduit fittings used in non-hazardous environments.
The insulated body reduces heat-related insulation stress, and the 150°C temperature rating provides a robust margin for elevated ambient temperatures. Zinc die-cast construction resists corrosion and mechanical wear, while threaded connections promote secure terminations, reducing the likelihood of arcing, loosening, or conduit movement in panels and enclosures.
Plan for periodic visual inspections of threaded joints and insulation integrity, particularly in vibration-prone or outdoor environments. The durable zinc die-cast material and insulating body minimize maintenance frequency, delivering cost savings from fewer replacements. Standardized 4" fittings also reduce spare-part variety and simplify procurement, enhancing inventory management.