Home Products Rapid Shutdown Device Module-Level Rapid Shutdown Device BFS-A2 With Aluminum Enclosure

Module-Level Rapid Shutdown Device BFS-A2 With Aluminum Enclosure

BFS-A2 is a rapid shutdown switch for connection to PV panel arrays to achieve compliance with 2014 NEC 690.12 and 2017 NEC 690.12.

                    Highlights :
                    Module Level Rapid Shutdown
Manual Shutdown by Button Switch
Automatic Shutdown on AC Power Loss
Improved Heat Dissipation with Aluminum Casing
Over temperature (>100℃) Automatic Shutdown
Compatible with Most String Inverters and Panels
No cross-talk with Inverter or WIFI
Shutdown Panels to 0V at microsecond (μs) level
10 Years Warranty

                

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Application

The BFS-A2 is a module-level solar rapid shutdown device that ensures fire safety for solar installations by maintaining continuous rapid shutdown functionality throughout the PV system’s lifespan.

It automatically shuts down when the temperature exceeds 100°C, requires no additional configuration, is compatible with any string inverter, and offers flexible installation options. The emergency button switch enables manual rapid shutdown and responds to local or regional grid shutdowns.

PV RAPID SHUTDOWN DEVICE SOLUTIONS

To comply with NEC 2017/2020 requirements, if PV panels exceed 40V, a 1-to-1 configuration is required to meet regulatory standards.

The diagram above illustrates a typical 1-to-1 configuration using three solar panels and three BFS-A2 devices for protection. One additional component on the rooftop is the communication cable connecting the BFS-A2 units to the button switch.

FEATURES/ADVANTAGES

A Complete RSD Solution

Automatically shut down the panels upon detecting a temperature in the area exceeding 100℃.
Automatically shut down the panels in the button switch box in case of AC power supply loss.
The firefighter can manually use the button switch to shut down the panels in case of an emergency.

Case Study

Philippines with 1.2MW solar installation
Philippines with 1.2MW solar installation
Philippines with 200kwp solar installation
Festival Supermall Alabang Solar Rooftop 2.8MW
Festival Supermall Alabang Solar Rooftop 2.8MW
Pampanga, Philippines 1.3MW

SPECIFICATION

Model	BFS-A2
Maximum Input Voltage	110V*2	70V*2
Maximum Input Current	20A	25A
Maximum Power (Input1+Input2)	2200W*2	1750W*2
PV Input and Output Cables	4.0mm2 (12AWG) Cables + MC4 Connectors
PV Input 1 Cables Length	180mm
PV Input 2 Cables Length	300mm
PV Output Cables Length	1800mm
IP Protection	IP68
Operating Temperature	-40℃ to +85℃
Storage Temperature	-40℃ to +85℃
Standard Compliance	EN 62109-1:2010, EN 61058-1:2018
PV Connectors	Staubli MC4 (Standard); Jinko connectors for option
DC Power Supply for Each RSD
Voltage Range	14V~28V
Maximum Current	12mA
Maximum Power	0.2W
Power Supply Cables (Signal Cables)	2*0.823mm2 (18AWG) Signal Cables + Signal Connectors
Power Supply Cables Length	1800mm
Mechanical
Enclosure Material	Aluminum
Dimension	136.4mm113.5mm31.2mm