Eaton EBMX1B-W020 Explosionproof Circuit Breaker Hazardous
Part Number: EBMX1B-W020
Quick Summary
The Eaton EBMX1B-W020 Explosionproof Circuit Breaker protects electrical systems in hazardous locations, delivering reliable overcurrent protection in compact Size 1 enclosures. Engineers often struggle to find a clamp-style, certified unit that fits tight spaces, survives harsh atmospheres, and remains serviceable with available replacement parts. This model meets NEC/CEC standards and hazardous-location ratings, including Class I Division 1/Zone 1 as well as Division 2/Zone 2, plus rugged NEMA 3R 4X 7 9 certifications. Built with copper-free aluminum, a 600 Vac rating, and three-pole design, it integrates seamlessly with Eaton's EBMXB family while offering straightforward installation, testing flexibility, and proven lifecycle support for compliance-driven facilities. Together these features translate into reduced downtime, simpler procurement, and lower total cost of ownership in hazardous manufacturing, chemical processing, and oil-and-gas environments.
Product Information
Extended Description
EBMX1B-W020 Eaton: Eaton Crouse-Hinds series clamped EBMXB circuit breaker, Copper-free aluminum, Size 1 enclosure, 20A, Eaton breaker, Three-pole, 600 Vac
Product Name
Eaton Crouse-Hinds series clamped EBMXB circuit breaker
Catalog Number
EBMX1B-W020
UPC
662276604155
Product Length/Depth
22.11 in
Product Height
12.86 in
Product Width
15.98 in
Product Weight
80 lb
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class I, Division 1 Class I, Zone 1 Class I, Division 2 Class I, Zone 2 Class II, Division 1 Class II, Division 2 Class III
NEMA Rating
3R 4X 7 9
Enclosure cover construction
Clamped
Enclosure size
Size 1
Enclosure
With circuit breaker
Manufacturer
Eaton
Voltage rating
600 Vac
Interrupt rating
20 AIC
Number of poles
Three-pole
Enclosure material
Copper-free aluminum
SP3D Design Package - Clamped EBMXB Explosionproof Circuit Breakers
EBMX Replacement Parts List
EBMX Replacement Parts List
Clamped EBMXB Series Explosionproof Circuit Breakers catalog page
Clamped EBMXB Explosionproof Circuit Breakers UL certification
Clamped EBMXB Explosionproof Circuit Breakers UL certification
IF 1149 - Wiring
IF 1149 - Wiring
IF 1149 - Wiring
Eaton Specification Sheet - EBMX1B-W020
Feature: Explosionproof clamped EBMXB enclosure design provides secure, enclosure-integrated protection → Business impact: Simplified installation in hazardous environments and reduced risk of enclosure breach → Application: Chemical plants and refineries where reliable sealing and fast retrofits are required. Feature: Copper-free aluminum enclosure offers corrosion resistance without the weight penalty of steel → Business impact: Lower maintenance costs and easier handling during installation, improving site productivity → Application: Outdoor and wash-down areas in oil, gas, and chemical facilities. Feature: 600 Vac voltage rating supports standard plant distribution and motor control circuits → Business impact: Versatile integration with existing power systems and safer selective coordination → Application: Control panels and branch circuits in hazardous locations. Feature: 20 AIC interrupt rating ensures fault current is interrupted safely → Business impact: Enhanced personnel protection and reduced arc-flash exposure, lowering downtime → Application: High-energy circuits feeding motors and processing equipment. Feature: Three-pole configuration provides balanced three-phase protection → Business impact: Consistent protection across all phases, simplifying wiring and troubleshooting → Application: 3-phase motors and feeders in hazardous environments. Feature: NEC/CEC compliance and Class I/II/III ratings plus Zone certifications provide regulatory confidence → Business impact: Streamlined approvals, faster commissioning, and assured product traceability → Application: Projects in chemical processing, mining, and energy sectors. Feature: NEMA 3R 4X 7 9 protection rating enhances outdoor and rugged-use capability → Business impact: Extended service life in harsh weather and wash-down conditions → Application: Outdoor equipment rooms and exposed installations. Feature: Size 1 enclosure compatibility with standard EBMXB accessories and replacement parts → Business impact: Simplified replacements and maintenance planning, lower total cost of ownership → Application: Retrofit projects and ongoing lifecycle management. Feature: Comprehensive documentation, including SP3D design packages and replacement-part lists → Business impact: Faster design-to-build workflows and predictable maintenance budgeting → Application: Engineering and procurement teams aligning with Eaton’s ecosystem.
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FAQs
For proper installation, confirm the enclosure is rated for hazardous locations and use the clamped EBMXB design to secure the breaker. Follow manufacturer torque specs and verify both wiring and sealing meet NEC/CEC requirements to maintain explosion-protected integrity.
Key specs include a 600 Vac voltage rating, 20 AIC interrupt rating, three-pole configuration, copper-free aluminum enclosure, and Size 1 enclosure. These ensure reliable three-phase protection with robust fault interrupt capability in hazardous environments.
Yes. The unit carries NEC hazardous ratings for Class I Division 1 and Zone 1, as well as Division 2 and Zone 2, plus Class II and Class III ratings, enabling use across a wide range of hazardous-location applications.
The EBMX1B-W020 adheres to NEC/CEC standards, carries NEMA ratings 3R 4X 7 9, and is documented with UL certification references for explosionproof enclosures, supporting compliant installations in hazardous facilities.
Access the EBMX replacement parts list and SP3D design packages to simplify stocking and spares planning. The copper-free aluminum construction and standard EBMXB family compatibility also reduce maintenance complexity and extend service life.