EKFS-50-2 Rapid Shutdown Device (2-String Firefighter Safety Switch)

Configuration: 2-String (Dual independent PV strings)

Max Voltage: 1500VDC

Max Current: 55A (800VDC), 50A (1000VDC), 40A (1200VDC), 30A (1500VDC)

DC Connectors: MC4 (4 wiring points)

Protection Rating: IP65

Housing Material: PC+ABS

Operating Temperature: -20℃ to +70℃

Auto-Shutdown: Activates at 70℃

Standards Compliance: EN60947-3

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Product Introduction

EKFS-50-2 is a professional Rapid Shutdown Device engineered for photovoltaic systems with dual-string configurations. Serving as a critical Firefighter Safety Switch, this 2-String model provides simultaneous DC isolation for two independent PV strings during emergencies. With a robust 1500VDC rating and 50A capacity per channel, it delivers reliable protection for commercial and industrial-scale installations.

Featuring automatic thermal shutdown at 70°C and IP65 environmental protection, the EKFS-50-2 supports easy integration via industry-standard MC4 connectors. Its dual-channel design optimizes safety for complex PV arrays while ensuring compliance with the latest rapid shutdown standards.

Applications

• Commercial solar installations with multiple strings

• Industrial-scale PV systems

• Large residential arrays with dual-string configurations

• Solar farms requiring redundant string isolation

• Government/municipal solar projects

Product Parameters

Model	EKFS-50-2
No. of strings	2
Max. string voltage	300-1500VDC
Max. string current	55A(800VDC), 50A(1000VDC), 40A(1200VDC), 30A(1500VDC)
Switch wiring	4
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

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