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Intended use of the Domestic Firefighter
Safety Switch
•
The Domestic Firefighter safety Switch has been especially developed as a safety device for
direct current (DC) photovoltaic installations. The DC disconnect switch is used to
disconnect the connected strings of the installation in case of an emergency situation.
Location of the Domestic Firefighter Safety
Switch
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The switch needs to be placed as close to the solar panels as possible. Due to its enclosure,
the switch is protected against external influences like dust and moisture. The whole set-up
conforms to lP66 which makes it suitable for outdoor use when needed.
Normal Operation
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AC Supply Cut-Off Shutdown
When the AC power to the BPE-FFSS is interrupted, the BPE-FFSS will automatically switch to
OFF, breaking the DC connection between the solar panels and the inverter. Once the AC
power to the BPE-FFSS is restored, the BPE-FFSS will automatically switch to ON, restoring the
DC connection between the solar panels and the inverter.
Special Operation
•
Over Temperature Shutdown
If the temperature inside the BPE-FFSS enclosure exceeds 85°C, the BPE-FFSS will
automatically switch to OFF, breaking the DC connection between the solar panels and the
inverter, to protect the internal components and create a safe situation. Once the
temperature drop to below 75°C, the BPE-FFSS will automatically switch to ON, restoring the
DC connection between the solar panels and the inverter.
•
Manual Shutdown
Upon the user activating the red push button switch located in BPE-FFSS enclosure, the BPE-
FFSS performs a Rapid Shutdown, breaking the DC connection between the solar panels and
the inverter.
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