The MFZ Ovitor EX-Klemmkasten Ex-e is an 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)
| Specification |
Details |
| Type |
Ex-e terminal box / junction box |
| Protection concept |
Ex-e (Increased Safety) |
| ATEX classification |
Ex II (2)G / Ex II (2)D (typical) |
| Zones |
Gas Zone 1 & 2, Dust Zone 21 & 22 |
| Cable entries |
6 × cable glands |
| Mounting |
Surface-mounted (front access) |
| Ingress protection |
Typically IP65–IP66 |
| Material |
Plastic / GRP / coated metal (variant dependent) |
| Operating voltage |
Up to ~690 V (typical for Ex-e terminals) |
| Temperature class |
Commonly T6 (variant dependent) |
| Ambient temperature |
~−20 °C to +40 °C (typical) |
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
(The Company reserves the right to amend product specifications and information without notice.)
