Mersen Announces Expansion to Surge-Trap® STXH Series
Latest addition to the Surge-Trap Residential Protection Product Offering
NEWBURYPORT, MA (December 1, 2025) — Global electrical power and advanced materials leader Mersen is pleased to announce the expansion of its STXH Series of Surge Protective Devices (SPDs). Mersen’s leading SPD for residential protection now includes a 75kA rating model for premium whole-home protection. The new model is compatible with all residential electrical panels, making it a simple installation or upgrade for electrical installers.
The Surge-Trap STXH is UL Type 1 listed and fully compliant with UL 1449, 5th Edition, making it suitable for any 120/240VAC split-phase application. Equipped with TPMOV® technology, it stands out as the safest option in its class. With its compact design, superior performance, and proven reliability, the new STXH 75kA rating model is ideally suited for premium whole-home protection.
Meanwhile, the existing STXH 50kA rating model remains the perfect choice for safeguarding subpanels and critical equipment such as HVAC systems, pool equipment, backup generators, and inverter disconnect switches. Designed for maximum flexibility, it can be installed on any outdoor AC disconnect in residential settings—shielding equipment whether it’s located indoors or outdoors.
The Surge-Trap STXH Series provides critical surge protection across the entire home—from individual devices to complete electrical systems.
Features and Benefits of STXH 75kA:
- Protection Capacity (surge rating) = 75kA
- Whole Home Premium Protection
- Fits ALL electrical panels in the market
- 5-year product warranty plus $50k connected equipment warranty
- Mersen’s elite TPMOV technology
Mersen’s Surge-Trap STXH 75kA joins the full range of SPDs featuring TPMOV technology, designed for premium residential applications. Technical support is available to assist with product selection and use.
As Surge protection becomes increasingly critical across a variety of markets, Mersen stands as a leader, offering a comprehensive suite of surge protection solutions designed to meet the unique challenges of each sector. From the intricate electronics within industrial production facilities to the robust systems powering solar and wind farms, the need for reliable surge protection has never been more pronounced. Mersen delivers advanced surge protection solutions (SPDs) that not only meet but exceed safety and performance expectations.
For more information about Mersen’s Surge-Trap STXH series, please visit the STXH series web page. For more information about Mersen Electrical Power, visit mersen.com.
About Mersen
Mersen is a global expert in electrical power and advanced materials for high-tech industries, with over 135 years of experience, and more than 50 industrial sites and 16 R&D centers in 35 countries. Mersen Electrical Power provides a broad portfolio of products in electrical protection and control and offers solutions for power management applications. Mersen Electrical Power teams work with customers worldwide to design and to deliver customized solutions and key products into various key markets such as commercial, industrial, renewable energies, power electronics, and E-mobility. Mersen’s mission is to make customers’ applications safer and more reliable. For more information, visit mersen.com.
