STP T1+2 5 PV is the PHOTOVOLTAIC range of combined Type 1+2/ Class I+II devices intended for discharging lightning currents (10/350 μs) and protecting against induced voltage surges (8/20 μs), in accordance with EN 50539-11 and IEC 61643-31 standards. These products provide advanced protection to photovoltaic systems by utilizing Mersen’s optimized dynamic thermal disconnection system, which does not require additional overcurrent protection (back-up fuse) due to its high short-circuit withstand rating. The devices are suitable for all PV applications: large-scale and rooftop. The series includes specific multipole products for multiple MPPT inverters.
Type 2 IEC 61643-31; Type 2 EN 50539-11; Type 2 UL 1449
Number Of Poles
-40 to 85deg C
Voltage Range DC
50 kA,65 kA,100 kA
PA6 CT1; V-0
Y PV,U PV,multiple MPPT
Rigid wire Section
6 ... 35 mm2
STP T2 40 PV is the series of devices that provide advanced overvoltage protection to photovoltaic systems by utilizing Mersens optimized dynamic thermal disconnection system, which does not require additional overcurrent protection (back-up fuse) due to its high short-circuit withstand rating. These surge protective devices are suitable for all PV applications: large-scale, rooftop and self-consumption (off-grid) DC installations. The series includes specific multipole products for multiple MPPT (Maximum power point tracker) inverters.
STM T1 50 is the most robust series of single pole Type 1/Class I lightning current arresters, able to discharge energy (current) from a direct lightning strike (10/350s) on an external lightning protection system (LPS) or overhead supplies, in accordance with EN/IEC 61643-11. Suitable as the first step of protection in incoming power supply panels and areas with high exposure to lightning strikes, fitted with an external lightning protection system.
STP T12 12.5 is the series of combined Type 1+2/Class I+II devices for discharging lightning currents and protecting against voltage surges, in accordance with EN/IEC 61643. Suitable as the first step of protection in incoming power supply panels and areas with exposure to the atmosphere, where installations are usually provided with an external lightning protection system.
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Surge Protection Device
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350 VDC to 1000 VDC
Rated voltage Uc
Max discharge current
Modulostar Helio Surge Protection Device
Helio Protection® Fuse gPV were specially designed for PV, and DC more generally speaking,applications
They comply with both UL512 and IEC 60269-1 standards and RoHS as well
The plastic parts of our Modulostar Helio Protection are UL94 V0 to V2 (Yellow Card)
Two models are available: One with and one without blown fuse indication via an indicator light which is on when the fuse is blown(open circuit)