Eaton ASB 4 Anti-short Bushing - NEC/CEC
Part Number: ASB 4
Quick Summary
The anti-short bushing safeguards conduit terminations in AC/MC and FMC systems, ensuring safe, reliable electrical connections. Without proper bushings, conduit terminations are prone to insulation wear, short circuits, and costly downtime. This ASB 4 line complies with NEC/CEC standards and is rated for ordinary/non-hazardous locations with a 90°C limit. Designed for 3/4 in trade size, AC/MC and FMC conduit, it delivers compact, quick-install performance that saves time. Manufacturers benefit from consistent compliance and reduced field rework, with UL and certification documentation available for audits. Its lightweight footprint also lowers shipping and handling costs while preserving mechanical strength in industrial lighting and emergency systems.
Product Information
Extended Description
ASB 4 Eaton: Eaton Crouse-Hinds series ASB anti-short bushing, AC/MC and FMC, 90°C temperature rating, 3/4"
Product Name
Eaton Crouse-Hinds series ASB anti-short bushing
Catalog Number
ASB 4
UPC
784564002563
Product Length/Depth
1.25 in
Product Height
1.25 in
Product Width
0.75 in
Product Weight
0.007 lb
Area classification
Ordinary/Non-Hazardous Locations
Standards type
NEC/CEC
Conduit type
AC/MC and FMC
Trade size
3/4 in
Special features
90°C temperature rating
Crouse-Hinds series Clamps, Anti-short Bushings and Metal Stud Grommets - AC/MC and FMC catalog page
Clamps, Anti-short Bushings and Metal Stud Grommets - AC/MC and FMC UL certification
Clamps, Anti-short Bushings and Metal Stud Grommets - AC/MC and FMC UL certification
Eaton Specification Sheet - ASB 4
The ASB 4 anti-short bushing is engineered for AC/MC and FMC conduits with a 3/4 inch trade size, offering a compact footprint that simplifies installation in tight panel spaces. Feature → Business Impact → Application: The small 1.25 in length and 1.25 in height profile reduces enclosure intrusion, enabling faster cabinet wiring and easier retrofits in maintenance cycles for lighting and emergency systems. The 0.75 in width and a weight of 0.007 lb minimize added mass on conduit runs, cutting shipping costs and easing field handling during installation. Feature → Business Impact → Application: A 90°C temperature rating supports reliable operation in warm environments typical of industrial lighting bays and switchgear rooms, increasing uptime and reducing thermal-related failures. Feature → Business Impact → Application: NEC/CEC compliance and Ordinary/Non-Hazardous Locations suitability provide regulatory assurance for facilities that require formal electrical certification and non-hazardous operation, streamlining approvals and audits. Feature → Business Impact → Application: Compatibility with AC/MC and FMC conduit systems ensures seamless integration with existing Eaton Crouse-Hinds clamps and fittings, reducing procurement complexity and ensuring consistent performance across installations. Feature → Business Impact → Application: The ASB 4’s proven design minimizes insulation abrasion and moisture ingress at terminations, offering long-term reliability and lower maintenance costs in harsh environments. The availability of UL certification references and specification sheets supports QA, procurement confidence, and audit readiness. Across multiple projects, engineers report faster installs, predictable performance, and improved safety margins when using this anti-short bushing as part of a standardized conduit termination kit.
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FAQs
ASB 4 is specified for AC/MC and FMC conduit types, supports a 3/4 in trade size, and fits within compact installations with a 1.25 in length and height profile and 0.75 in width, enabling straightforward integration into existing conduit runs.
ASB 4 has a length/depth of 1.25 in, height of 1.25 in, width of 0.75 in, and weighs 0.007 lb, making it a lightweight, space-efficient addition to conduit terminations.
ASB 4 is designed to NEC/CEC compliant, intended for Ordinary/Non-Hazardous Locations, and features a 90°C temperature rating to support reliable operation in typical industrial environments.
ASB 4 is ideal for lighting and emergency systems installations that use AC/MC and FMC conduits in ordinary or non-hazardous locations, especially where space is tight and 90°C rated performance is required.
Using ASB 4 reduces insulation wear and short-circuit risk at terminations, leading to lower field rework, faster installations, and improved audit readiness due to clear NEC/CEC compliance documentation.