Fireman's switch for PV systems in accordance with IEC 60947-3

Customized system - also with overvoltage protection! With the Q Fire Switch, all lines from the disconnection box on the roof are electrically isolated from the PV generator in the event of switching. This means that all DC cables in the building are de-energized. Switching takes place via the control box, which is ideally installed near the inverters or connected to another point in the AC grid.

• Safe disconnection of the PV generator even in an emergency
• AC-coupled, can therefore be triggered at any time via the mains supply
• Arc-free switching thanks to modern switching technology
• The Q-Fire control box can be switched on and off using an external key switch
• Complete set; modularly expandable and easy to install
• Switches back on automatically after a power failure

The main advantage of the system with AC-coupled switch-off is that, for example, in the event of a fire, there is no need to search for a switch or it is no longer accessible. When the AC grid is switched off, the DC lines from the switch box on the roof are also automatically disconnected. When the AC grid is reconnected, the system automatically goes back into operation.

The basic version of the fireman's switch can switch off 2 or 4 strings and can be extended in almost any modular way! One control box supplies up to 3 switch boxes, each of which can be used to switch off 4 strings. If this is not sufficient, a slave control box is added, which in turn can switch off up to 3x 4 strings. And if that's still not enough, ... You can imagine!

Central emergency shutdown for PV systems, customized variants adapted to the respective system

Suitable for fire alarm systems, can be connected to fire alarm control panel

Suitable for all modules/inverters, regardless of manufacturer

Switches back on automatically after a power failure

Safe disconnection of the PV generator even in an emergency

Arc-free switching thanks to modern switching technology

Complete set; modularly expandable and easy to install

Control box can be switched on and off using an external key switch

AC-coupled, can therefore be triggered at any time via the mains supply

Status can be transmitted to the alarm center via a potential-free contact

Customized variants: Big Box with overvoltage protection

We are also happy to customize our QFirefor you, for example as a big box for disconnecting up to 16 PV strings, including overvoltage protection. Just let us know what you need - sometimes "off-the-shelf" solutions just aren't right!

>> Find out more about the QFireBIG Box here!