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Clamped EBMXC Explosionproof Combination Motor Starters

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 retightened, 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.  EBMXC combination motor starters provide across-the-line starting, stopping, speed changing and reversing of polyphased AC induction motors.  They are 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.

Clamped EBMXC Explosionproof Combination Motor Starters
Clamp ensures error-proof install
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.

Power Xpert C445

The Smart EBMX with C445 motor management intelligence relay offers industry-leading protection, diagnostics and energy usage analytics. Advanced motor management, extensive communications, superior diagnostics, integrated logic, ground fault detection and protection make Smart EBMX with C445 option ideal for critical motor applications where uptime is key.

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

*High AIC and -50°C temperature certifications do not apply for Group B.

**Enclosures with PB23, RR2 and RR3 options are rated NEMA 3R.  All other options maintain NEMA 4X rating.

Design features - Clamped EBMX

  • Clamped enclosure significantly reduces time to enter enclosure and reduces opportunity for missing, stripped or broken bolts
  • 65 kAIC at 480V enclosure rating for high interrupting capacity applications
  • -50°C to +60°C temperature range for extreme environments
  • Magnetic, thermal magnetic and electronic break trip options for short circuit and overcurrent protection
  • Bi-metallic and electronic/solid state overload protection options
  • Normally open (NO) holding circuit contact supplied standard
  • Up to six cover operators for a variety of applications
  • Side operated breaker 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 starter and 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 factory wiring included between the starter and breaker – consult factory for any additional wiring requirements.

Design features - Power Defense breaker

  • Status indication
  • USB secondary injection testing
  • Breaker health and diagnostic monitoring
    • Monitors and communicates breaker health status, enabling predictive maintenance to avoid costly, unscheduled downtime
    • Communicates circuit breaker status at customer determined levels to prompt for breaker maintenance or inspection
  • Metering capability
    • Current and voltage metering accurate to 0.5% of reading
    • Power and energy metering accurate to 1% of reading
    • Voltage metering internal to trip unit with no need for external modules
    • Load alarm at two programmable levels between 50% to 120%
  • Zone selective interlocking (ZSI) with indication

Design features - Power Xpert C445

  • Configurable load and motor system coverage using advanced monitoring and protection algorithms
  • Multiple pre-defined operating modes (Setup for Direct Operation Mode by default)
  • Power Xpert in Control configuration and monitoring software tool
  • Integrated logic engine with expandable digital I/O, analog I/O, thermocouple input (contact factory if needed)
  • Built-in ground fault detection
  • Communication options
    • Modbus TCP
    • Modbus RTU (standard)
  • Positive temperature coefficient (PTC) options

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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Questions before you buy

Email us using the link above, or call our Customer Support team at 1-866-764-5454