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 grow smaller and faster with each new generation, their susceptibility to transient voltage surge damage becomes ever greater. The full-featured Tranquell™ DIN Rail Mount SPD (Surge Protective Device) is a Type 2 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 critical control circuits.


Features and benefits

  • Built-in thermal protection
  • 200kA interrupting rated
  • DIN Rail mount
  • Pluggable 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
  • No external fusing or circuit breakers required


  • UL1449, 3rd edition (September 2009) recognized
  • UL type 2 device
  • RoHS compliant
  • ANSI/IEEE C62.41

Product Scope

Surge Capacity Per Mode
25kA & 50kA
Nominal Discharge Current Rating
Fault Withstand Rating (SSCR)
120V to 600V
50/60 Hz
Ingress Protection Rating