We are excited to announce that four of our surge protection devices have officially received TÜV Rheinland certification, marking another milestone in Thor Electric Co., Ltd.’s pursuit of excellence in safety, reliability, and international compliance.

The certified models include:

1.TRS2-C40 (275V / 320V)

TRS2-40 275V 2P	TRS2-40 320V 2P

The TRS2-C40 series is a high-performance Type 2 surge protective device designed for AC low-voltage distribution networks. Available in both 275V and 320V variants, it offers a maximum discharge current of 40kA and a nominal current of 20kA, making it ideal for secondary protection against transient overvoltages caused by indirect lightning strikes and switching operations.

2.TRS3-C40 (600V DC)

TRS3-C40 600VDC 2P

The TRS3-C40 (600V DC) is a robust DC surge protective device engineered specifically for photovoltaic (PV) applications. With a maximum continuous operating voltage of 600V DC and a high discharge capacity of 40kA, it safeguards PV strings and inverters from overvoltage transients caused by lightning and switching events. The device features a modular design with thermal disconnection, status indicators, and compliance with IEC 61643-31 standards, making it a reliable and essential component for rooftop solar installations, off-grid systems, and commercial PV projects.

3.TRS3-C40 (1200V DC)

TRS3-C40 1200VDC 3P and 2P SPDS

The TRS3-C40 (1200V DC) series is engineered for high-voltage DC protection in large-scale and commercial photovoltaic installations. Available in both 2-pole and 3-pole configurations, these SPDs are designed to handle maximum continuous operating voltages up to 1200V DC, making them ideal for string inverters, combiner boxes, and DC distribution panels in solar power systems. With a nominal discharge current of 20kA and a peak capacity of 40kA, the devices ensure reliable performance under extreme surge conditions.

4. TRS4-C40 (275V / 320V)

TRS4-C40 275V 1P to 4P configuration

The TRS4-C40 (275V) surge protection series offers comprehensive protection for AC power systems, with configurations ranging from 1-pole to 4-pole models. Designed according to IEC 61643-11 standards, each unit provides a nominal discharge current of 20kA and a maximum capacity of 40kA, effectively suppressing surges caused by indirect lightning and switching transients.

TRS4-C40 320V 1P to 4P configuration

The TRS4-C40 (320V) surge protective device series is designed for flexible application across single-phase and three-phase power systems, available in 1P, 2P, 3P, and 4P configurations. Featuring a nominal discharge current of 20kA and a maximum discharge capacity of 40kA.

About TÜV Certification

TÜV is one of the world’s leading independent testing and certification bodies. Its mark is a globally recognized symbol of compliance with international safety standards.

At Thor, we continue to focus on innovation, quality, and compliance—offering reliable surge protection solutions for a wide range of applications.