The BFS-21 is designed and developed as the most reliable module level rapid shutdown device for solar building fire safety and meeting the NEC requirements.
Operates SINGLE standard PV module (>=40V) or TWO modules (<40V).
The BFS-21 complies with NEC 2017&2020 690.12 rapid shutdown requirements when work with the SunSpec signal transmitter BFT-01 or an inverter with built-in transmitter, in non-interference with the inverter AFCI.
|Range of Operating Voltage||120V input|
|Max Operating Current (A dc)||18A|
|Max Input Power (W)||2160W total|
|Max array short circuit current (A dc)||18A|
|Output DC Voltage (V dc)||120V|
|Rated Max output current (A dc)||18A|
PLC (DC Power Line)
Microsecond response RSD
|UL 50 E Enclosure Type Rating||4X|
Jinko connectors for option
|Input cable length||180mm|
|Output cable length||1800mm|
|Ambient Operating Temperature||
-40°C — +55°C
|Over Temperature Protection||85°C|
|Certificate and Standards||
UL1741 PVRSS and PVRSE listed
NEC 2014/2017/2020 690.12
|Warranty||BFS-21: 25 Years|