Commercial/Industrial Surge Protective Devices (SPDs)

In today's electronic world, electrical systems for business just aren’t complete unless they incorporate surge protection. This is best accomplished by stopping surges before they get in through the application of hard-wired surge protective devices (SPDs) installed at key electrical system surge entry points.

Nearly 100 years ago, Siemens helped pioneer utility grade high voltage surge protectors. This same knowledge and experience influenced the development of our commercial surge protectors where we are protecting over a trillion internet searches and transactions each year. With our TPS3 Commericial grade and our FirstSurge Commercial Class protectors, we continue this legacy by delivering robust, commercial grade and class surge protection for your business and home.


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Integral Surge Protective Devices (SPDs)


Siemens' line of factory installed integral TPS3 SPDs mounts within host switchgear, switchboards, panelboards, MCCs, busway and more consistently assure optimal performance through direct bus bar or minimal cable connections. This translates to the some of the industry's best features:


  • Optimized integral construction ensuring top installed suppressed voltage protection Voltage Protection Ratings (VPRs)
  • UL 1449 4th Edition Listed or Component Assembly as either Type 1 or Type 2 SPDs
  • CSA C22.2, No. 269.1-14, 269.2-13, and 269.4-14
  • Most voltage codes carrying UL's highest robustness rating of In = 20kA
  • Surge current capacities ranging from 100kA to 1000kA
  • True or Discrete 6 or 10-Modes of L-N, L-G, N-G, and L-L Protection (120V or 277V systems only)
  • Meets or Exceeds most Specified Requirements
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Wall Mount / External Surge Protection


Siemens family of wall or external surge protetive devices meet or exceed most specified requirements. Based upon TPMOV technology, every TPS3 delivers some of the industry's best features as listed below:


  • UL 1449 4th Edition Listed or Component Assembly as either Type 1 or Type 2 SPDs
  • CSA C22.2, No. 269.1-14 and 269.2-13
  • Most voltage codes carrying UL's highest robustness rating of In = 20kA
  • Surge current capacities ranging from 100kA to 1000kA
  • True or Discrete 6 or 10-Modes of L-N, L-G, N-G, and L-L Protection (120V or 277V systems only)
  • Meets or Exceeds most Specified Requirements
  • SPDs for renewable Solar PV or Wind applications.