PV Firefighter Safety Switch DC 1500V 50A Rapid Cutoff

Name: PV Firefighter Safety Switch 50A DC - ETEK Electri
SKU: EKFS-50-1

Safeguarding high-voltage solar arrays, this robust PV Firefighter Safety Switch enables immediate direct current isolation during thermal emergencies. Designed specifically for 1-string configurations, the EKFS-50-1 delivers a 50A maximum capacity at 1000VDC to ensure the absolute safety of emergency responders.

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ModelEKFS-50-1

CategoryRapid Shutdown Devices

AvailabilityIn stock

CE & TUV certified
Worldwide shipping
OEM & ODM support

Structural Overview of the PV Firefighter Safety Switch

Engineered with a highly durable IP65 PC+ABS enclosure, this PV Firefighter Safety Switch prevents environmental ingress while maintaining strict electrical safety for outdoor routing.

High Voltage Capacity: Handles maximum circuit voltages up to 1500V DC and variable currents up to 55A (at 800VDC), ensuring secure single-string isolation.
Thermal Auto-Shutdown: Automatically triggers a complete DC power cutoff when ambient temperatures exceed 70°C, functioning as an efficient solar rapid shutdown switch.
Streamlined Integration: Features plug-and-play MC4 DC connectors alongside an AC plug-in power supply for fast, error-free field installation.
Environmental Defense: Operates reliably in harsh conditions with an IP65 protection grade and Class II protection level, complying strictly with EN60947-3 standards.

Field Applications for the PV Firefighter Safety Switch

Integrating the EKFS-50-1 minimizes electrical hazards across residential and commercial infrastructures requiring a dependable PV Firefighter Safety Switch.

Applications & Use Cases

Residential Rooftop Solar: Provides essential emergency DC isolation for single-string PV systems, protecting first responders during fire incidents.
Small Commercial Arrays: Functions as a critical string level rapid shutdown node for localized commercial photovoltaic installations.
Fire Safety Upgrades: Facilitates compliance with modern safety codes by acting as a reliable fireman’s switch solar pv retrofit for single-string inverters.

Technical Specifications with the PV Firefighter Safety Switch

Evaluate the precise direct current and alternating current parameters below to align this PV Firefighter Safety Switch perfectly with your EN60947-3 rapid shutdown device requirements.

Main Electrical Data

DC Circuit Parameters
No. of strings	1
Max. string voltage	300 – 1500 VDC
Max. string current	55A (800VDC), 50A (1000VDC), 40A (1200VDC), 30A (1500VDC)
Switch wiring	2
DC connector	MC4
AC Power Supply Parameters
Power supply type	AC single phase
Operating voltage	100 – 270 VAC
Nominal voltage	230 VAC
Operating frequency	47 – 53 Hz (Nominal: 50 Hz)
Nominal current	30 mA
Start up (loading) current	100 mA (AWG)
Switch on action current	300 mA
AC connector	Plug-in

Operating & Environmental Conditions

Switch according to	EN60947-3
Protection degree / level	IP65 / Class II
Mechanical endurance	9700 Cycles
Electrical endurance	300 Cycles
Operating temperature	-20°C ~ +70°C
Storage temperature	-40°C ~ +85°C
Max. temp for automatic shutdown	70°C

Dimensions and Wiring of the PV Firefighter Safety Switch

Verify exact IP65 enclosure clearances and MC4 wiring compatibilities using the physical footprints associated with this PV Firefighter Safety Switch..

Dimensional Data (mm)

EKFS-50

Model	Width (Enclosure)	Width (With Mounting Tabs)	Height
EKFS-50-1	192.5 mm	233.0 mm	177.5 mm

DC Isolator Contact Configuration (Switch wiring 2)

PV Firefighter Safety Switch