Eaton EBMX3B-W350 Explosionproof Circuit Breaker - 350 AIC
Part Number: EBMX3B-W350
Quick Summary
The Eaton EBMX3B-W350 is an explosionproof circuit breaker designed for hazardous locations in industrial control panels. Engineers often struggle to source equipment that meets strict hazardous-location codes while fitting into large, compliant enclosures. Its NEC/CEC compliance, hazardous-location ratings (Class I, Division 1 & 2; Zone 1 & 2; Class II/III), and robust NEMA protection (3R, 4X) help ensure safety and reliability. This combination delivers installation and lifecycle value for panel builders and service teams, with copper-free aluminum construction that supports durable, maintenance-friendly power distribution in harsh environments.
Product Information
Extended Description
EBMX3B-W350 Eaton: Eaton Crouse-Hinds series clamped EBMXB circuit breaker, Copper-free aluminum, Size 3 enclosure, 350A, Eaton breaker, Three-pole, 600 Vac
Product Name
Eaton Crouse-Hinds series clamped EBMXB circuit breaker
Catalog Number
EBMX3B-W350
UPC
662276605947
Product Length/Depth
42.28 in
Product Height
13.85 in
Product Width
17.93 in
Product Weight
211 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 3
Enclosure
With circuit breaker
Manufacturer
Eaton
Voltage rating
600 Vac
Interrupt rating
350 AIC
Number of poles
Three-pole
Enclosure material
Copper-free aluminum
SP3D Design Package - Clamped EBMXB Explosionproof Circuit Breakers
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Clamped EBMX Series Explosionproof Combination Motor Starters Brochure
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IF 1794 - Clamped EBMX Motor Control Series
IF 1794 - Clamped EBMX Motor Control Series
IF 1794 - Clamped EBMX Motor Control Series
Eaton Specification Sheet - EBMX3B-W350
Feature: Copper-free aluminum enclosure reduces weight and corrosion risk. Business Impact: Improves field handling during installation and extends enclosure life, lowering maintenance costs. Application: Ideal for outdoor and harsh indoor industrial areas where exposure to chemicals or moisture is common. Feature: Clamped enclosure cover construction enables quick, secure sealing. Business Impact: Speeds up field servicing and reduces commissioning time, lowering total cost of ownership. Application: Fit for large explosionproof panels in hazardous locations. Feature: 600 Vac voltage rating with 350 AIC interrupt rating. Business Impact: Provides strong short-circuit protection for high-load motor control and distribution circuits, increasing system reliability. Application: Suitable for motor starters, feeders, and power distribution blocks in Class I/II/III environments. Feature: Size 3 enclosure with three-pole configuration. Business Impact: Supports three-phase power distribution with compact footprint, improving panel density and wiring organization. Application: Common in control panels and MCCs in challenging facilities. Feature: Hazardous-location certifications and NEMA protection (3R, 4X). Business Impact: Ensures regulatory compliance and rugged protection against dust, moisture, and impact, reducing incident risk. Application: Necessary for installations in chemical plants, refineries, and mining sites. Feature: Documentation and compatibility with EBMXB family (spare parts availability, design packages). Business Impact: Streamlines procurement and maintenance planning, reducing downtime. Application: Integrates with SP3D design packages, brochures, and installation sheets for fast deployment.
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FAQs
The EBMX3B-W350 ships as a three-pole unit within a Size 3 enclosure and uses a clamped cover for rapid field installation. Its copper-free aluminum construction supports secure mounting and straightforward wiring inside hazardous-location panels, making retrofits or new builds efficient and compliant.
The device is rated for 600 Vac and provides a 350 AIC interrupt rating. It is a three-pole configuration designed for high-load, three-phase distribution in hazardous environments, delivering reliable fault protection and consistent performance in demanding industrial settings.
Yes. The EBMX3B-W350 carries NEC/CEC compliance with hazardous-location ratings that cover Class I Division 1, Zone 1 and related configurations, along with Class II/III considerations, ensuring suitability for hazardous-location installations and regulatory adherence.
Comprehensive resources include the Eaton specification sheet EBMX3B-W350, SP3D design packages for clamped EBMXB explosionproof breakers, brochures, installation instructions, and catalog pages. These documents support accurate sizing, installation, and maintenance planning across projects.
Copper-free aluminum construction, robust NEMA protection (3R, 4X), and a durable clamped enclosure reduce corrosion risk and maintenance downtime. Combined with readily available spare parts and documentation, this model delivers lower ongoing maintenance costs and improved system reliability in hazardous environments.