Configuration: 1-String (Single PV string)
Max Voltage: 1500VDC
Max Current: 55A (800VDC), 50A (1000VDC), 40A (1200VDC), 30A (1500VDC)
DC Connectors: MC4 (2 wiring points)
Protection Rating: IP65
Housing Material: PC+ABS
Operating Temperature: -20℃ to +70℃
Auto-Shutdown: Activates at 70℃
Standards Compliance: EN60947-3
EKFS-50-1 is a professional Rapid Shutdown Device for single-string PV systems, also known as a Firefighter Safety Switch. It provides essential emergency DC isolation during fire incidents, supporting up to 50A at 1500VDC in an IP65-rated enclosure for reliable outdoor use.
Designed for residential and small commercial installations, the EKFS-50-1 offers automatic thermal shutdown at 70℃ and easy plug-and-play setup with MC4 connectors. This compact device ensures code compliance and dependable performance.
Applications
• Residential rooftop solar PV systems (single string)
• Small commercial PV arrays
• Retrofit projects requiring single-string compliance
• Critical fire safety upgrades for single-string inverters
|
Model |
EKFS-50-1 |
|
No. of strings |
1 |
|
Max. stringvoltage |
300-1500VDC |
|
Max. stringcurrent |
55A(800VDC), 50A(1000VDC), 40A(1200VDC), 30A(1500VDC) |
|
Switch wiring |
2 |
|
DC connector |
MC4 |
|
Power supply type |
AC single phase |
|
Operating voltage |
100-270VAC |
|
Nominal voltage |
230VAC |
|
Operating frequency |
47-53 Hz |
|
Nominal frequency |
50 Hz |
|
Nominal current |
30mA |
|
Start up (loading) current |
100mA (AWG) |
|
Switch on action current |
300mA |
|
AC connector |
Plug-in |
|
Protection degree |
IP65 |
|
Protection level |
Class II |
|
Switch according to |
EN60947-3 |
|
Mechanical endurance |
9700 |
|
Electrical endurance |
300 |
|
Operating temperature |
-20°C ~ 70°C |
|
Storage temperature |
-40°C ~ 85°C |
|
Max. temperature for automatic shutdown |
70°C |
