Explosion-protected terminal/junction box designed for use in hazardous (Ex) environments. 

It is built according to the “increased safety” protection concept (Ex-e) and is used to:

• Safely distribute electrical connections
• Interface field devices (limit switches, motors, sensors)
• Integrate with industrial door control systems in hazardous zones

Typically used with:

• MFZ Ovitor industrial door drives
• Explosion-proof control panels
• ATEX-compliant installations (e.g. chemical plants, grain silos)

Key Features

• Certified for hazardous areas (gas & dust zones)
• Ex-e (increased safety) design prevents sparks/arcs
• Equipped with 6 cable glands (Verschraubungen)
• Front-access enclosure (2017 front layout version)
• Robust industrial housing (impact & corrosion resistant)
• Suitable for integration with Ex-rated motor/control systems

Technical Specifications (Typical / Equivalent Ex-e Box Class)

Design & Construction

• Flameproof integrity is not required (unlike Ex-d), but:
  • No arcs, sparks, or hot surfaces allowed
• Internal terminal blocks are:
  • Securely fixed
  • Designed for vibration resistance
• Cable glands:
  • Maintain sealing and explosion protection rating
• Enclosure:
  • Often halogen-free, UV-resistant, and corrosion-resistant

Function in MFZ Ovitor Systems

Within an MFZ Ovitor installation, this Ex-e terminal box is typically used to:

• Connect:
  • Motor power cables
  • Limit switches
  • Safety devices (edges, sensors)
• Provide a safe interface between hazardous zone equipment and control units
• Maintain compliance with ATEX/IECEx requirements

Safety & Compliance

• Must comply with:
  • ATEX Directive (2014/34/EU)
  • IECEx certification schemes
• Installation requirements:
  • By certified electricians only
  • Correct gland sealing is critical
• Designed to prevent:
  • Electrical arcs
  • Excess heat buildup
  • Ignition of explosive atmospheres