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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Strategic Vision for a Sustainable Future
Looking ahead, ETEK Electric remains committed to becoming a globally renowned manufacturer in the new energy and electrical protection industry. We continue to focus on:
Developing innovative green energy solutions
Enhancing product safety and reliability
Expanding our sustainable technology portfolio
Supporting global energy transformation
Contributing to a low-carbon future

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