Clamped EBMXS Series Explosionproof Motor Starters

The world's only 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.

The clamped EBMX enclosure utilizes patented clamping technology to reduce downtime, increase safety and lower maintenance costs.


  • Harsh and hazardous motor control environments, including refineries, chemical and petrochemical plants, corrosive process facilities, food and beverage, marine and mining
  • Across-the-line starting, stopping, speed changing and reversing of polyphased AC induction motors with overload and undervoltage protection
Enclosure Sizes Size 1 (NEMA size 0-2); size 2 (NEMA size 3); size 3 (NEMA size 4)
NEMA Starter Sizes NEMA size 1, 2, 3, 4
Overload Relays Bi-metallic/thermal (standard); electronic/solid state (optional)
Materials Body/cover – copper-free aluminum; clamp – anodized copper-free aluminum; external hardware – stainless steel; internal parts – galvanized steel
Cover Operators Pushbuttons; pilot lights; selector switches
Temperature Range -25°C to 40°C (standard); -50°C to 40°C (optional); -25°C to 60°C (optional)


  • Clamped enclosure significantly reduces time to enter enclosure and reduces opportunity for missing, stripped or broken bolts
  • -50°C to +60°C temperature range for extreme environments
  • Bi-metallic and electronic overload protection options
  • Up to six cover operators for a variety of applications
  • Side operated handle provides visual confirmation of proper operator alignment while cover is open
  • 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
  • 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