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Clamped EBMXB Explosionproof Circuit Breakers

EBMX is the only NEMA 7 clamped enclosure for hazardous areas.  One of the biggest challenges with enclosures located in hazardous areas is accessibility.  To access internal components for preventative maintenance or troubleshooting, up to 70 bolts have to be loosened and then re-tightened, leading to extended periods of downtime and safety risks due to improperly torqued or missing bolts.

Crouse-Hinds series clamped EBMX enclosures utilize patented clamping technology to reduce downtime, increase safety and lower maintenance costs.  The EBMX provides service entrance, feeder or branch circuit protection for lighting, heating, appliance and motor circuits.  It is ideal for harsh and hazardous motor control environments in refineries, chemical and petrochemical plants, corrosive process facilities, food and beverage facilities, marine and mining applications. 

And now, Eaton’s Smart EBMX enclosure combines the industry’s first explosionproof clamping enclosure design for hazardous environments with IoT-enabled circuit breakers and intelligent motor management relays—enabling safer, faster and smarter operations in the most demanding applications.

Clamps ensure error-proof installation
Withstands extreme temps, water and dust
Ease of Use
Opens and closes in seconds

Safer. Faster. Smarter.

Crouse-Hinds series EBMX now available with Power Defense circuit breakers and Power Xpert C445 intelligent motor management relays. 

With Smart EBMX you get motor starters, breakers and combination starters all with the latest protection technology, keeping your system connected, your equipment and employees protected, and your customers informed.


Smart EBMX 500 x 400

Power Defense molded case circuit breaker

Industry features such as built-in communications, advanced energy metering and algorithms that notify you when your circuit breaker needs maintenance, as well as zone selective interlocking technology that clears faults quickly and locally, preventing propagation into your system. Arc flash reduction options help protect your people with the fastest tripping speed technology.

Certifications and compliances


  • Class I, Divisions 1 & 2, Groups B, C, D
  • Class I, Zones 1 & 2
  • Class II, Groups E, F, G
  • Class III

UL standards

  • UL1203 – Explosionproof and Dust-ignitionproof Electrical Equipment for use in Hazardous (Classified) Locations
  • UL2062 – High AIC Ratings for Groups C, D

CSA standard

  • cUL to CSA C22.2 No. 30
Additional certifications
  • UL/cUL certified for -50°C to + 60°C
  • SASO Certificate of Conformity

Environmental ratings

  • NEMA 3R, 4X, 7BCD, 9EFG

Design features

  • Patented clamped enclosure design reduces opportunity for missing, stripped or broken bolts
  • Simple clamp actuation for user-friendly access to enter enclosure
  • 65 kAIC at 480V enclosure rating for high interrupting capacity applications
  • -50°C to +60°C temperature range for extreme environments
  • Thermal magnetic and electronic break trip option for short circuit and overcurrent protection
  • Side operated handle provides visual confirmation of proper operator alignment while cover is open and can be padlocked in either ON or OFF positions for OSHA compliance
  • Neoprene cover gasket provides NEMA 4X protection for hose down applications
  • Maximum wiring room compliance with National Electrical Code requirements allows for easy and safe installation
  • Rugged, corrosion-resistant, cast copper-free aluminum construction provides NEMA 4X protection
  • Semi-clamshell enclosure design, with an external flanged ground joint between body and cover, provides increased access to interior components
  • Minimum enclosure-to-enclosure spacing with little interference between the opened cover and adjacent enclosure
  • Pre-drilled mounting plate for simple breaker installation
  • Detachable tap-on mounting feet
  • Steel brackets supplied standard for lifting during installation
  • Bodies have top and bottom drilled and tapped entries for power and control conduits; removable reducers are supplied standard to accommodate smaller size conduits; all conduit entries are plugged

Standard materials

  • Body and cover – copper-free aluminum
  • Clamp – anodized copper-free aluminum
  • External hardware – stainless steel
  • Internal parts – galvanized steel


Drawings and design support

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