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Safety devices

Safe operations and maintenance

Door limit switches

The limit switches have the function of interrupting the current in the electrical panel when it is opened. To ensure maximum safety during operations on panel components.

Series of accessories for electrical enclosures

All the complements that make an electrical panel really complete and functional, from document holder and pressure compensator to directional fans that can be installed in every part of the electrical panel.

The advantages and features of our components

More information

Door limit switches: How do they work?

Safety switches (or door limit switches) are electromechanical devices that are applied on the frame of the electrical panel and can turn on LED lamps, turn off a fan, deactivate the anti-condensation heater or cut off the power supply in general when the door is opened or closed. The door limit switches transform a mechanical movement into an electrical signal using an operating device acting on electrical contacts.


Directional fans: Right where you need them.

There is always the need to control hot spots generated by the electrical activity of the components inside an electrical panel. For this reason, it is often necessary to convey a flow of air or to suck hot air away from a specific area of the panel. Directional fans are designed precisely for this need and to force the flow of air inside a panel. Versatile and installable exactly where they are needed the most.


To compensate pressure and signal when panels are live

Additional information

Pressure compensator

Panels with a high degree of protection develop a pressure difference with respect to the external environment when they are subject to temperature changes. The possibility of moisture and dust entering in the form of water vapour through any small opening in the panel increases as a result. Anti-condensation pressure compensators or anti-condensation compensating valves have been created to be applied inside electrical panels working with high levels of closing tightness precisely to avoid this problem.

When the walls of the control enclosure cool rapidly as a result of a quick drop in temperature or as a result of rainstorms, the temperature difference may result in a vacuum condition between the inside of the enclosure and the outside environment. In these conditions, the pressure will tend to self-compensate and humid (external) air will penetrate inside the panel through the seals, touch the cooled walls, and turn into condensation. With the repetition of phenomena of this type, soon there will be a lot of condensation inside the panel, which will significantly increase the risk of corrosion of electrical contacts, circuits, electronic boards. The familiar consequences are false commands or fault signals. Finally, a strong build-up of moisture can also result in an actual short-circuit.

A pressure compensator (or pressure compensating valve) must be installed to avoid risks of corrosion, malfunctions and short-circuits caused by condensation build-ups. The pressure can compensate itself but the humidity remains far away from circuits, contacts and devices inside the electrical panel.

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New roof exhaust unit TP series in CC
Roof ventilation system

New roof exhaust unit TP series in CC

Fandis has developed a new energy-saving roof ventilation solution, expanding the range of plastic towers with 24 and 48V DC powered models. Visit the dedicated section for more information