Fire Safety Switch – Solartec Firefighter SFF

Solartec Firefighter SFF

Fire Safety Switch

Source: Gave.com

Photovoltaic panels can pose a serious risk if there are overloads or insulation issues. In the event of a fire, the panels continue to generate direct current (DC), turning the wiring into a constant danger for emergency crews.

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What is the Solartec Firefighter (SFF)?

The Solartec Firefighter is a safety switch specifically designed for photovoltaic solar installations. It is engineered to operate in two main modes:

Automatically, when the temperature exceeds 70 °C, cutting the DC current between the panels and the inverter.
Manually, using an emergency button or remote emergency stop, allowing firefighters or emergency personnel to safely disconnect the system from a safe distance.

How Does the SFF Switch Work?

1. Real-time thermal monitoring

The system integrates temperature sensors that constantly monitor the operation of the installation. If it detects overheating above 70 °C, it automatically interrupts the DC current.

2. Automatic disconnection and reset

When safe conditions are restored, the system allows the circuit to reconnect automatically, without the need for manual intervention.

3. Remote disconnection

Thanks to an external emergency switch, the system can be manually disconnected from a secure location, ensuring firefighters can work safely without electrical risk.

Key benefits of the Solartec Firefighter SFF

High Temperature Detection (+70 °C)

The device includes precision thermal sensors that monitor the ambient temperature in real time. When an increase above 70 degrees Celsius is detected, it is considered a possible sign of fire or overheating, and the system reacts immediately.

Automatic DC Power Cut and Automatic Reset

When the thermal alarm is triggered, the switch automatically disconnects the direct current line running between the panels and the inverter. Once the temperature returns to safe levels, the system allows automatic resetting without the need for manual intervention or technicians.

Plug & Play Installation, Easy and Fast

The SFF has been designed so that any professional can easily install it, without special tools or complicated configurations. It connects via standard MC4 connectors, and the system is ready to operate immediately after installation.

Remote Manual Disconnection for Emergencies

In addition to automatic cut-off by temperature, it can be manually activated from a safe point, such as an emergency button or a stop mushroom switch. This feature is especially useful for firefighters or rescue teams, who can cut the power without exposing themselves to electrical risk.

Integrated Control Circuit

It includes an intelligent electronic control module that manages the system’s actions, monitors the status of components, and ensures a quick and reliable response to any anomaly. The entire circuit is protected inside the unit.

Visible Status Signaling

The device has light indicators or signals that show the system status (active, cut-off, alarm, etc.). This allows for immediate visual monitoring by installers, maintenance personnel, or intervention teams.

IP66 Protection Against Dust and Water

The SFF’s casing is made of durable materials and complies with IP66 protection, ensuring total sealing against dust and complete protection against powerful water jets. This makes it suitable for outdoor environments and adverse weather conditions.

Regulatory Compliance & Safety

The NEC (National Electrical Code) has required rapid shutdown systems since 2014. The 2017 and 2020 revisions further mandated reducing string voltage below 80 VDC.
The UL 3741 standard certifies that systems like the SFF meet international safety requirements for firefighter protection.

Where is the SFF Installed?

Very close to the solar panels, at the string level, to minimize the risk of electrical arcs in the DC cabling.
Compact design (204 × 194 × 105 mm), suitable for residential, commercial, and industrial installations.

Installation & Maintenance

Plug & Play installation: no special tools or configurations required.
Preventive maintenance: while not mandatory, annual inspections are recommended for UL 3741 certified systems, and every 5 years for standard shutdown setups.

Download the Solartec Firefighter SFF technical brochure

Would you like to know all the technical details, dimensions, and available configurations of the Solartec Firefighter? GAVE offers you the official informational brochure in PDF, with complete information about: