ProTec T1S

ProTec T1S products are DIN rail mounted products designed in a compact pluggable housing for use as a Class I+II/Type 1+2 Surge Protective Device (SPD). They can be combined with Type 2 or Type 3 SPDs. ProTec T1S features Raycap’s proprietary Phase-GDT (PGDT) that has been developed to optimize both voltage switching and voltage limiting SPD technologies to create an ideal Class I SPD in a DIN Rail design – where a compact package is possible using voltage switching technology but without the drawbacks of a high residual voltage or poor follow current rating. ProTec T1S uses a multi-cell, encapsulated GDT technology, to achieve a residual voltage like that of an MOV-based SPD, but in a footprint half the size of the market competition and without restrictions governing where on a network it may be installed.


  • Dissipation capacity from 100 kA (10/350 μs) to 4TE
  • Leakage Current Free topology
  • Compact, pluggable housing
  • For networks with high prospective short-circuit residual currents (SCCR)
  • Suitable for repeated processes in networks with an Ip up to 50 kA 50/60 Hz
  • Low residual voltage of Up = 1.5 kV
  • Can be combined with Type 2 or Type 3 SPDs
  • Reduced follow-on current due to multi-cell design
  • Fulfills test Class I according to IEC 61643-11
  • VDE certified