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An orange junction box is mounted in the foreground. Emergency exit signs, fire extinguishers and a firefighter can be seen in the background. — Junction box with functional integrity for fire protection installations

Functional integrity when it matters

Maximum safety in the event of fire

In safety-relevant areas such as escape routes, fire compartments, or technical operating rooms, the functional integrity of electrical systems is crucial. The ENYCASE FK series was specially developed for these requirements and meets the highest standards regarding fire protection and operational safety.

To ensure that these systems continue to operate reliably in the event of fire, junction boxes with defined functional integrity are indispensable. They ensure that electrical connections remain operational even under extreme heat exposure – and this for a specified period of time. In Germany, DIN 4102-12 regulates the requirements for the functional integrity of electrical cable systems. These are divided into the classes E30, E60, and E90, which define functional integrity for 30, 60, and 90 minutes, respectively. Additionally, insulation integrity in accordance with BS EN 50200 (PH 120) is a crucial safety factor. It ensures that electrical insulation is maintained even under intense heat exposure – a must for critical infrastructures.

For electrical specialist companies, this means: Only products that demonstrably offer functional integrity or insulation integrity guarantee maximum operational safety and standard-compliant installation. Rely on certified quality – for maximum safety you can depend on in an emergency.

Orange junction box with functional integrity surrounded by flames — Junction box with functional and insulation retention

features of the FK series

Intrinsic fire resistance in accordance with DIN 4102-12 (German standard) in combination with function-retaining cables
Insulation integrity in accordance with BS EN 50200 – for additional safety in combination with insulation retaining cables
Screw anchors, ceramic terminals & cable entries – included as standard
Multi-stage membranes – for cable entries of different sizes
Quick-release with quarter turn – closure position visible for easy inspection
Material: Polycarbonate with GFS or sheet steel
Burning behaviour: Glow wire test in accordance with IEC 60695-2-11 up to 960 °C, flame-retardant, self-extinguishing
Color: Orange, RAL 2003 – indicates fire protection function

product overview

New: Models with integrated main line protection

Thanks to the independent protection of the models FK 1604 1F/2F, the functional integrity of the main line is also ensured in the event of fire.

Ensuring the flow of electricity to critical systems in the event of fire
Increased operational safety for emergency power circuits and safety lighting
A decisive factor for compliance with fire protection concepts
Standard-compliant in accordance with IEC 60670-22 with permanently installed terminal block and secured outgoing line
Tested functional integrity in accordance with DIN 4102-12 (E30/E60/E90) in combination with cables from Dätwyler and Eupen
Insulation integrity PH120 in accordance with BS EN 50200

Thanks to the integrated fuse, the entire main line remains intact in the event of a short circuit – without an additional distribution unit. This saves space and costs and meets the standard requirements for functional integrity in the event of fire.

FK 1604 1F

Installation of an orange junction box. The wiring can be seen inside. — Junction box with a secured outlet

With a secured outgoing line (1F), a single safety-relevant system, such as an emergency lighting system, can be protected.

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FK 1604 2F

Installation of an orange junction box with two secured branch lines — Junction box with two secured outlets

With two secured outgoing lines (2F), two separate loads can be protected without an additional distribution unit.

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Typical areas of application

An airport terminal where people with suitcases can be seen. In the background, a display showing flights can be seen. — Airport terminal

Safety lighting and emergency power supply

A tunnel with people in motion blur. An emergency exit sign hangs from the ceiling. — Tunnel with emergency exit sign

Fire compartments and escape routes

An industrial hall with large stainless steel containers and pipes — Industrial production

Industrial facilities with increased fire protection requirements

Modern building with glass façade and green space. — Modern building

Public buildings

Variants of the FK series

Made of plastic

With metric knockouts for cable entry up to 16 mm². Tested for use with functional integrity E 30 / 60 / 90 or insulation integrity in accordance with BS EN 50200. Screw anchors, high-temperature resistant ceramic terminal, and cable entries are included as standard in the scope of delivery.

Cut-away plastic junction box. The internal wiring is partially visible with ceramic terminals and cables. — Branch box with functional integrity made of plastic

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Made of sheet steel

Junction boxes for large cross-sections up to 50 mm². Tested for use with functional integrity E 30 / 60 / 90 or insulation integrity in accordance with BS EN 50200. Protection against accidental contact is ensured by the enclosure. Mounting via external wall fastening. Communication distributor E30 for the installation of various telecommunications connection strips.