Hensel FK 0404 Fire-Resistant Junction Box E90, Surface Mounted, IP65, 5x4mm2

The Hensel FK 0404 is a professional-grade fire-resistant junction box engineered for surface mounting in environments where safety and reliability are paramount. This enclosure is specifically designed to maintain electrical circuit integrity during fire events, meeting the E90 classification for fire resistance. With an IP65 protection rating, the unit is fully dust-tight and provides robust protection against water jets, making it suitable for demanding industrial and commercial installations.

Advantages

The primary benefit of the Hensel FK 0404 is its ability to ensure continuous power supply to critical safety systems, such as emergency lighting or fire alarm circuits, even under extreme thermal stress. Its durable construction and high-quality materials provide long-term reliability, while the surface-mounted design allows for straightforward installation on walls or ceilings. The inclusion of integrated terminals simplifies the wiring process, ensuring secure connections that comply with stringent safety standards.

Suitable for

• Emergency lighting systems
• Fire alarm and detection circuits
• Smoke extraction control systems
• Critical infrastructure in commercial buildings
• Industrial facilities requiring fire-rated electrical components

This junction box may not be suitable for applications requiring submersion in water or for environments where the ambient temperature consistently exceeds the manufacturer's specified operating limits for standard electrical enclosures. It is also not intended for use in hazardous areas requiring explosion-proof certification.

Key specifications

• Fire resistance rating: E90
• Protection class: IP65
• Terminal capacity: 5x4mm2
• Mounting type: Surface mounted
• Dimensions: 104x104x70mm

How to use

Installation should be performed by a qualified electrician in accordance with local electrical codes and fire safety regulations. The box is mounted to the surface using appropriate hardware through the provided mounting points. Cables are introduced into the enclosure using suitable cable glands to maintain the IP65 rating. Once the cables are inserted, conductors are connected to the internal 5x4mm2 terminals, ensuring all screws are tightened to the specified torque to prevent loose connections.

What to consider before purchase

• Verify that the E90 fire rating meets the specific requirements of your local building codes.
• Ensure the cable cross-section matches the 4mm2 terminal capacity.
• Confirm that the mounting surface is capable of supporting the weight and fire-rated requirements of the enclosure.
• Check that the cable entry points are sealed correctly to maintain the IP65 protection level.

Usage recommendations: Always use certified fire-resistant cables in conjunction with this junction box to ensure the entire circuit maintains its E90 integrity during a fire. Regularly inspect the enclosure for any signs of physical damage or degradation to ensure continued performance.