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STS 485 is the series of surge protection devices for equipment connected to RS485 networks. The ranges offer a number of formats, voltages and numbers of protected lines and are designed especially for a variety of applications. These are protectors for a final step of very fine protection to be installed as close as possible to particularly sensitive equipment connected to these communications lines.

STS NET is the series of surge protection devices for Ethernet signal lines. The range offers a variety of products for different Ethernet categories and also for patch panel format.These are protectors for a final step of very fine protection to be installed as close as possible to particularly sensitive equipment connected to these communications lines. Meets the IEC 61643-21 standard.

STL T23 PP is the series of robust 10 kV combined Type 2+3/Class II+III devices for discharging voltage surges while providing a very fine voltage protection level.
Suitable for protection of LED outdoor luminaires (street-light). Due to the exposure of the extremely sensitive LED electronics to lightning–induced overvoltages, STL T23 PP is a widespread market solution amongst OEM manufacturers of LED lighting systems.

Mersen’s Surge Trap STMT Series features low voltage surge protective devices suitable for both AC and DC voltage applications. This series is ideal for the protection of controls, power supplies, communication systems, and other sensitive equipment. With a slim design, these DIN-rail mount SPDs are ideal for limited space applications. The series is suitable for operating voltages of 12-230 VAC and 24-365 VDC and offers an optional dry contact feature for remote monitoring.