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

Changing Scene

  • Delta Transformers Appoints New Representative in Ontario

    Delta Transformers Appoints New Representative in Ontario

    October 8, 2026 Delta Transformers, a Canadian manufacturer of dry-type transformers, is pleased to announce the appointment of Spectrum Power Systems as their new representative in Ontario, Canada, effective October 1st, 2026. For over 27 years Spectrum Power Systems has been representing leading electrical manufacturers throughout Ontario. The company has a strong presence in the… Read More…

  • Former Electrical Contractor Principal Arrested Following ESA Referral to Police

    Former Electrical Contractor Principal Arrested Following ESA Referral to Police

    October 8, 2026 Arrest follows ESA licence revocation, $70,000 in previous fines and new electrical safety charges   Peel Regional Police recently arrested Rahyl Hassan, principal of former Licensed Electrical Contractor, Strak Holdings Inc., following an investigation in which the Electrical Safety Authority (ESA) cooperated with police.  ESA referred concerns about potential criminal activity to Peel… Read More…

  • Federal Government Announces $2 billion Investment to Deliver One Million Home Retrofits Across Canada

    Federal Government Announces $2 billion Investment to Deliver One Million Home Retrofits Across Canada

    October 8, 2026 The federal government has announced a $2 billion investment to deliver one million home retrofits across Canada. These energy-efficient retrofits will lower heating costs for Canadians and reduce emissions. First, they are launching a new National Heat Pump Rebate to help up to 820,000 households make the switch to more efficient electric heat pumps: Heat pumps… Read More…

  • FCM and the Government of Canada Announce $66.3 M in 162 Energy Efficient Housing Projects

    FCM and the Government of Canada Announce $66.3 M in 162 Energy Efficient Housing Projects

    September 8, 2026 Funding supports homeowners and affordable housing providers in reducing energy costs and improving quality of life, while adding jobs to communities coast-to-coast  The Government of Canada and the Federation of Canadian Municipalities (FCM) today announced that $66.3 million in funding has been approved for 162 energy efficiency projects across the country. The… Read More…