The full-featured TT Series DIN Rail Mount SPD (Surge Protective Device) is a China GB standard recognized GB 18802.1-2002 surge protective device that is modular and easy to install. DIN Rail mount housing allows for quick installation. Each unit has a compact footprint and user-replaceable phase surge pluggable modules with an IP20 finger-safe design. Both visual indicators and remote indicators (dry contact) provide SPD status to monitoring control circuits.

It is typical that transient voltage surges from both external and internal sources directly affect the performance and life expectancy of electronic equipment. Products having a printed circuit board inside, from electronic lighting ballasts to computer servers, may be susceptible to transient voltage surge damage. As microprocessors and components that make up this equipment get smaller and faster with each new generation, their susceptibility to transient voltage surge damage becomes ever greater.


Features and Benefits


  • DIN Rail mount
  • Field replaceable phase modules
  • Finger-safe design – IP20 rating
  • Built-in visual status indicator
  • Remote indicator with 3 pin COM/NO/NC contacts
  • Easy installation or retrofit
  • Fail-safe / self-protected design
  • Small footprint


  • China GB standard recognized GB 18802.1-2002

Product Scope


Surge Capacity Per Mode
20kA, 40kA and 65kA
50/60 Hz
Ingress Protection Rating