Eaton EGJ421 Explosionproof Junction Box - Hazardous
Part Number: EGJ421
Quick Summary
The Eaton EGJ421 Explosionproof Junction Box protects electrical connections in hazardous locations across industrial facilities. In practice, downtime and non-compliant enclosures can drive costly delays and safety risks, especially when wiring options are limited. It aligns with NEC/CEC standards and NEC hazardous ratings for Class I Division 1 and 2, Class II Division 1 and 2, and Class III, supporting reliable operation in a wide range of hazardous environments. For design engineers and procurement teams, this enclosure delivers a robust, code-compliant solution with flexible conduit options and straightforward installation, helping lower risk and speed up commissioning in process and manufacturing plants.
Product Information
Extended Description
EGJ421 Eaton Crouse-Hinds: Eaton Crouse-Hinds series EGJ junction box, 3/4" back hubs, 4-3/16" depth, Feraloy iron alloy, 2 back hubs, 6 side hubs, 3/4" side hubs
Product Name
Eaton Crouse-Hinds series EGJ junction box
Catalog Number
EGJ421
Product Length/Depth
5.75 in
Product Height
5.75 in
Product Width
4.19 in
Product Weight
12.9 lb
UPC
782274300603
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class I, Division 1 Class I, Division 2 Class II, Division 1 Class II, Division 2 Class III
Depth
4-3/16 in
Number of side hubs
6
Side hub size
3/4"
Number of back hubs
2
Back hub size
3/4"
Material
Feraloy iron alloy
Crouse-Hinds series EGJ Explosionproof Junction Boxes catalog page
EGJ Explosionproof Junction Boxes UL certification
IF 359 - EGJ Explosionproof Junction Boxes
Eaton Specification Sheet - EGJ421
Feature: Rugged construction using Feraloy iron alloy provides superior durability and corrosion resistance in harsh environments. Business Impact: Extends service life, reduces maintenance cycles, and lowers total cost of ownership in chemical, oil and gas, and mining facilities. Application: Ideal for outdoor and indoor hazardous locations where mechanical protection is critical. Feature: Flexible conduit access with 2 back hubs and 6 side hubs, each 3/4 inch, plus a depth of 4-3/16 inches. Business Impact: Simplifies wiring layouts, shortens install time, and minimizes field modification work. Application: Supports complex wiring runs and fast path routing in control panels and junction zones. Feature: Compact footprint with 5.75 inch length/depth and 4.19 inch width, weighing 12.9 lb. Business Impact: Easy mounting in crowded enclosures, predictable shop handling, and safer transport. Application: Suitable for retrofit projects and new builds with space constraints. Feature: NEC/CEC compliance and NEC hazardous ratings (Class I Div 1 & 2, Class II Div 1 & 2, Class III). Business Impact: Regulatory risk reduction and accelerated procurement approvals. Application: Essential for certified installations in hazardous areas across energy, chemical, and processing sectors. Feature: Compatibility with EGJ series catalogs and access to installation and data resources (IF 359, specification sheet, UL certification). Business Impact: Reduces design ambiguity and speeds up commissioning with ready-to-use documentation. Application: Ideal for engineers validating specs and installers following standard instruction sheets.
Get a Quick Quote for a Eaton Crouse-Hinds EGJ421
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton Crouse-Hinds EGJ421?
Enquire Now
FAQs
EGJ421 is designed for Class I, Division 1 and 2 as well as Class II/III environments under NEC/CEC. Plan mounting with the 2 back hubs and 6 side hubs (3/4 inch each) to optimize conduit routing. Use the furnished instruction sheets for wiring schemes and ensure enclosure seals and fittings meet local compliance requirements before energizing.
The enclosure provides 2 back hubs and 6 side hubs, all 3/4 inch. It has a depth of 4-3/16 inches, and overall dimensions of 5.75 inches (length/depth) by 4.19 inches (width), with a weight of 12.9 pounds. This enables flexible wiring layouts while fitting within standard installation footprints.
Yes. EGJ421 carries NEC hazardous ratings including Class I Division 1, along with other classifications, making it appropriate for high-risk locations such as offshore platforms, refineries, and chemical plants where explosion protection is required.
EGJ421 is supported by NEC/CEC compliance and UL-related certification pages. Documentation includes IF 359 installation sheets and the Eaton specification sheet, plus a catalog page for the EGJ explosionproof series to assist design and procurement.
The combination of flexible hub configuration, known dimensions, protective Feraloy iron alloy construction, and readily available installation sheets minimizes custom modifications, speeds commissioning, and lowers risk of non-compliance — delivering predictable lead times and reduced field rework.