The increasing output of ground-mounted photovoltaic systems is presenting operators and service teams with ever more complex challenges. Particularly in systems with central inverters, a single defective string can lead to the shutdown of an entire system section in the megawatt range. This not only causes yield losses, but…
News from the Q3

🚨 Intersolar 2025 – Visit us from May 7-9 in Munich!
We are delighted to be represented at Intersolar Europe again this year – with our tried-and-tested QFire fire switch,…
New YouTube channel: Q3 explained! Topic: Fireman’s switch – safety for PV systems
Q3 erklärt: Ein Brand in der Nähe einer Photovoltaikanlage kann für Einsatzkräfte gefährlich werden – denn selbst bei abgeschaltetem Wechselrichter…
QFire PV fireman’s switch training for planners and installers
We know it’s not that easy. What does the slave control box do and why a delay circuit? How…