Littelfuse SPDN Series of NEMA-style Surge Protective Devices Now Available

June 8, 2023

Littelfuse, Inc. has launched its NEMA-style Surge Protective Device (SPDN) series to safeguard equipment from transient overvoltage events lasting micro-seconds and help mitigate costly damage and downtime. Its small package, with more direct modes of protection, makes it ideal for places with limited space. The external panel mount is available for 120V to 480V nominal voltage sub-distribution board applications in construction, food and beverage, HVAC/R, oil and gas, light industrial and water/wastewater industries.

“The SPDN surge protection devices include more direct modes of protection such as line to neutral, line to ground, and neutral to ground depending on product selection,” stated Augusto Sanchez, Littelfuse Industrial Business Product Manager. “With more direct modes of protection in a compact footprint, the SPDN optimizes space and delivers cost efficiencies enhancing panel design flexibility.”

SPDN
SPDN
SPDN
SPDN

The SPDN series product features include:

  • More direct modes of protection in a smaller package, increasing protection and design flexibility
  • UL 1283 filtering helps mitigate effects on power supplies by decreasing zero crossings during ringing transients to prevent interference on performance or unsafe conditions (SPDN-A only)
  • Capability to clamp and withstand high-energy transients ensures low-residual voltage during high-energy events and higher nominal discharge current to prevent disruption, downtime and degradation or damage to equipment
  • Stacked Metal Oxide Varistor (MOV) design provides more high-transient voltage protection in a compact, multi-layered structure
  • Installation on the line or load side of the circuit breaker to simplify maintenance by turning breaker off during upkeep (SPDN-A installs on the load side only)
  • Thermally protected MOV eliminates catastrophic failure
  • External LED indicator quickly identifies service requirements to avoid loss of protection
  • Compact footprint offers easy retrofit in existing applications where space is limited

Go HERE for more information

Related Articles


Latest Articles

  • Code Question on Section 24 – Patient Care Areas

    Code Question on Section 24 – Patient Care Areas

    July 14, 2025 The rules for the installation of panelboards, circuits, and bonding in Patient Care Area depends on whether the area is designated as either, Basic Care, Intermediate Care or Critical Care. How are these areas defined? Read more on Section 24 — Health care areas Read More…

  • Ontario’s Institutional Component Drives Non-Residential Construction Intentions in May 2025

    Ontario’s Institutional Component Drives Non-Residential Construction Intentions in May 2025

    July 14, 2025 In May, the total value of building permits issued in Canada rose by $1.4 billion (+12.0%) to reach $13.1 billion. The increase in construction intentions was driven by Ontario’s institutional component (+$1.3 billion). On a constant dollar basis (2023=100), the total value of building permits issued in May increased 11.8% from the previous month and was… Read More…

  • Plan Group Partners in Construction of UHN Surgical Tower at Toronto Western Hospital

    Plan Group Partners in Construction of UHN Surgical Tower at Toronto Western Hospital

    July 14, 2025 Plan Group is proud to be a partner in the construction of the UHN Surgical Tower at Toronto Western Hospital. Plan Group will provide work on the project in: Mechanical: Plumbing, HVAC, Controls, Medical GasElectrical: Lighting & Controls, Power Distribution, Emergency Generators, UPSTechnology: Structured Cabling, AV Systems including Digital Signage and IPTV UHN’s 15-storey Surgical… Read More…

  • How Canada Can Equip Workers for a Low-Carbon Future

    How Canada Can Equip Workers for a Low-Carbon Future

    July 14, 2025 The Canadian economy is shifting towards low-carbon industries, and the workforce is shifting with it. New roles are emerging, traditional ones are evolving and the demand for skilled workers is growing fast — particularly in light of the ambitious nation-building agenda the federal government has set out. In the federal Speech from… Read More…


Changing Scene

  • OEL Apprentice Success Project Available Until March 2026

    OEL Apprentice Success Project Available Until March 2026

    July 14, 2025 With renewed funding by Ontario’s Skills Development Fund, the OEL Apprentice Success Project is now available for another year until March 2026. The project is part of OEL’s Employer Engagement Program (EEP) consisting of wage, training, and equipment subsidies for apprentices. These funding opportunities are available to OEL Members and non-Members. For… Read More…

  • EB Horsman Unveils New Mural at Campbell River Branch

    EB Horsman Unveils New Mural at Campbell River Branch

    July 14, 2025 EB Horsman & Son are thrilled to unveil a new mural at their Campbell River branch, painted by the talented Kwakwaka’wakw artist, Adam Lewis. “This stunning piece celebrates Indigenous heritage and our community spirit,” said EB Horsman on LinkedIn. “As we mark 125 years of serving Western Canada and 55 years in… Read More…

  • Glenco Electric Celebrate New Red Seal Team Members

    Glenco Electric Celebrate New Red Seal Team Members

    July 14, 2025 “The Red Seal Journeyman designation is the highest recognition in the trades, and we’re proud to have seen so many of our team members earn it under our watch,” said Glenco Electric on LinkedIn. “At Glenco, we’re big on mentorship and promoting from within. When you combine that with driven, hard-working professionals,… Read More…

  • Canada and Ontario Investing to Improve Energy Efficiency in Province’s Agri-Food Industry

    Canada and Ontario Investing to Improve Energy Efficiency in Province’s Agri-Food Industry

    July 14, 2025 The governments of Canada and Ontario are investing up to $3 million and launching the third intake of the Agricultural Stewardship Initiative (ASI) to help farmers implement projects to improve the energy efficiency of their farming operations. To support the province’s plan to protect Ontario, this funding will help local agriculture, agri-food… Read More…