Project Inquiry Firefighter Switch QFire – Firefighter Switch for PV Systems
The QFire firefighter switch is designed project-specifically (strings/MPPT, connection type, accessories, SPD/fuses). Please complete the form – we will contact you promptly with a tailored configuration and quote.
New: QFire Configurator for Technical Pre-Planning
With the QFire Configurator, you can enter the key technical data of your PV system step by step – from the number of strings and MPPT structure to roof areas, surge protection, fuses and accessories.
Ideal if the suitable QFire solution has not yet been defined, or if multiple roof areas, inverters or disconnection zones need to be considered.
Alternatively, you can use the classic enquiry form below as usual – with free-text input, project data and upload options for plans, datasheets or tender documents.
SQAY supports technical pre-planning
Our Q3 AI guides you through the key data required for PV generator disconnection in a structured way.
This turns project information into a technically reviewable basis more quickly.
Classic Firefighter Switch Project Enquiry
Do you already have defined project data, inverter specifications or system plans available? Then please use the following form for your project enquiry. For guided technical pre-planning, we recommend the QFire Configurator.
For rapid processing, the following information is particularly helpful:
■ Inverter: Type, quantity, total MPPT
■ String configuration: Strings per MPPT, string reduction yes/no
■ Connection technology: Inputs/outputs via (MC4 / terminals / …)
■ Options: SPD, fuses, accessories (emergency stop / key)
■ Upload: String diagram / sketch / data sheet (for fuses)
Why firefighter switches from Q3?
Projektanfrage Feuerwehrschalter
Projektbezogene Anfrage zur Auslegung des QFire Systems. Auswahl der Komponenten und Erstellung eines Angebots.
Technische Unterlagen Feuerwehrschalter
Datenblätter, Zertifikate und technische Dokumentationen zu QFire BIG und LITE, Steuerboxen, Schaltboxen sowie Zubehör.
Funktionsweise + Technik QFire
Technische Grundlagen zur DC-seitigen Abschaltung, Systemaufbau, Auslösearten, galvanischer Trennung und normkonformer Umsetzung.
FAQ zum Thema Feuerwehrschalter
Antworten auf häufige Fragen zu Einsatz, Normen, Auslösekonzepten, Pflichtanforderungen und Betrieb von Feuerwehrschaltern in PV-Anlagen.