Fire Protection
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Fire Protection: DC Fire Safety Switches for PV Systems
This category contains fire safety DC switches for photovoltaic installations. They disconnect the DC side quickly in the event of a failure or fire, which protects emergency personnel and limits damage. Both models are rated 1500V DC, use MC4 connectors and are intended for installers and builders of PV systems.
What you will find in this category
- Fox Fire Safety DC Switch for PV, S-Box, 2 strings (GPV-408-01): for systems with 2 MPPT, rated 1500V DC.
- Fox Fire Safety Switch for PV, S-Box, 4 strings (GPV-408-02): for systems with 4 MPPT, 8-pole, maximum 25A per string.
- Common features: motor-operated, MC4 connector, IP66 protection rating, automatic power cut-off during AC grid failure.
How to choose
- Number of strings: match the switch to the number of MPPT inputs. Choose 2 strings or 4 strings.
- Voltage and connector: both versions are rated 1500V DC and use MC4 connectors. Check this against your string design.
- Current rating: the 4-string model is 8-pole with a maximum of 25A per string. Compare this with your string current.
- Environment: IP66 protection rating. The 2-string model has an operating temperature range of -20°C to +50°C.
- Standards: the 4-string model is stated as compliant with EN 60947-1&3. Check the product data for your chosen version.
Typical applications
These switches are mounted at the photovoltaic panels. If the AC grid fails, they cut the power automatically. In a hazardous situation they rapidly disconnect the DC supply. This reduces the risk of dangerous current for emergency personnel and helps to minimise damage in PV installations.
Frequently asked questions
What happens to the switch when the AC grid fails?
Both models provide automatic power cut-off or disconnection during an AC grid failure.
What is the difference between the two models?
The GPV-408-01 serves 2 strings (2 MPPT). The GPV-408-02 serves 4 strings (4 MPPT) and is 8-pole with a maximum of 25A per string. Both are 1500V DC, IP66 and use MC4 connectors.
Where is the switch mounted?
Both models are mounted at the photovoltaic panels.
Not sure which version suits your PV layout? Ask our technical support team for help with selection.