Ex e, Ex i, Ex op pr Terminal and Junction Boxes: Flexibility and Connection Safety

Keywords: buy Ex e/i junction boxes Ukraine, increased safety distribution boxes, Ex op pr enclosures, Pepperl+Fuchs terminal boxes, FieldConnex.

To ensure maximum safety and optimize infrastructure costs in potentially explosive atmospheres (Ex-zones), the correct selection of the protection method for terminal and junction boxes is crucial. Pepperl+Fuchs offers a series of solutions that combine different protection technologies in one enclosure, guaranteeing versatility in application.

We provide solutions that merge the methods of Increased Safety (Ex e), Intrinsic Safety (Ex i), and Optical Radiation Protection (Ex op pr).

Primary Protection Methods in the Boxes

1. Increased Safety (Ex e)

   • Principle: Preventing sparking and overheating during normal operation. The boxes feature a high protection rating of IP66, high-quality terminals, and increased creepage and clearance distances.

   • Application: The primary solution for general connections where internal components do not spark (power distribution, cable termination).

2. Intrinsic Safety (Ex i)

   • Principle: Limiting electrical energy to a level insufficient to ignite the explosive atmosphere.

   • Application: Ex e boxes are often used to house Intrinsically Safe (Ex i) terminal connections, serving as a reliable enclosure for signal circuits.

3. Optical Radiation Protection (Ex op pr)

   • Principle: Ensuring that optical radiation (e.g., from LEDs, lasers, or displays) does not create an ignition hazard in the explosive atmosphere.

   • Application: Boxes can be fitted with transparent windows for optical connections or indication, requiring the additional Ex op pr protection.

Advantages of Universal Pepperl+Fuchs Boxes

• Flexible Configuration: The ability to combine safe (Ex e) and intrinsically safe (Ex i) circuits within one enclosure simplifies installation and reduces the number of required cabinets.

• Materials and Resistance: Available in polyester (excellent chemical and corrosion resistance) and stainless steel (maximum mechanical strength).

• High Density: Optimized internal design allows for highly efficient use of space, housing a large number of terminal connections.

• Certification: All solutions are fully certified according to international standards ATEX and IECEx for safe use in Zone 1, 2, 21, and 22.

Official Partner in Ukraine — CSC-Automation LLC

CSC-Automation LLC offers a full range of Pepperl+Fuchs terminal and junction boxes for all operating conditions. Our specialists will help select the optimal configuration that combines the necessary protection methods (Ex e, Ex i, Ex op pr).