Thinkwe firefighter safety switch, 2 string

Thinkwe Firefighter Safety Switch – 2 / 5 / 10-string version

The Thinkwe Firefighter Safety Switch is a safety disconnect switch designed for solar power systems that automatically disconnects the DC circuit in the event of an emergency, such as a fire. The system is designed to enhance the safety of solar power systems and comply with modern fire safety regulations in both residential and industrial installations.

Safe disconnection in case of an emergency

The Firefighter Safety Switch operates by keeping the system in the open (ON) state during normal operation; however, if the AC power supply is interrupted—such as in the event of a fire—it automatically switches to the OFF state and disconnects the DC side.

This allows the solar system to be quickly de-energized, which is critical for the safety of firefighters and maintenance personnel.

Multi-string management – flexible system integration

The Thinkwe switch is available in multiple versions that support different numbers of strings:

• For 2-string systems
• For 5-string systems
• for systems with up to 10 strings

This allows the product to be used with solar systems of various sizes, ranging from smaller residential systems to larger commercial installations.

Designed for high-voltage systems

The system is capable of handling voltages up to 1500 V DC and currents up to 40 A, making it suitable for modern, high-power solar systems.

This is particularly important in C&I systems, where string voltages and currents are higher.

Automatic operation and thermal protection

The switch operates automatically and does not require manual intervention in the event of an emergency. It also features built-in temperature monitoring: if the temperature exceeds 70°C, the system automatically shuts down.

This provides an additional layer of safety for the solar system.

Robust design and outdoor installation

The Thinkwe Firefighter Safety Switch has an IP65 rating, making it resistant to dust and moisture and suitable for outdoor installation. The rugged design ensures long-term reliable operation even under harsh environmental conditions.

Installation typically takes place near the solar panel, ensuring that the disconnection occurs as close as possible to the DC source.

What is the difference between the 2 / 5 / 10-string versions?

The main difference between the various models is the number of strings they can handle:

• 2-string version: for smaller residential systems
• 5-string version: for medium-sized systems
• 10-string version: for larger systems, including industrial systems

There is no significant difference in functionality; all models provide the same safety features, but are designed to accommodate different system sizes.

SOLARKIT Reviews

The Thinkwe Firefighter Safety Switch is an essential safety component in any solar system where fire safety compliance and the ability to quickly disconnect the system are critical. Thanks to its various string capacities, it is a highly scalable solution suitable for both smaller and larger systems.

It is recommended for those who want to build a safe, standards-compliant solar system and are unwilling to compromise on safety.