Littelfuse Introduce More Robust Surge Protective Devices Featuring Littelfuse TMOV Technology

EIN LST LF 400

March 15, 2021

Littelfuse, Inc. has announced the LST Varistor series. Constructed with a proprietary thermally protected varistor technology (TMOV) developed by Littelfuse, this new varistor incorporates both a built-in thermal disconnect function and electric arc shield. This combination provides additional robust protection to prevent catastrophic failure and fire hazard even under the extreme circumstances of abnormal overvoltage conditions or varistor end-of-life.

It is specifically designed for Type 1 and Type 2 Surge Protective Devices (SPDs) used in markets and applications including:

  • Residential, Commercial, and Industrial buildings
  • Uninterruptable Power Supply (UPS)
  • Industrial motor control
  • Renewable energy
  • HVAC system

“The LST Varistor provides several advantages when compared to other technologies on the market,” said Boris Golubovic, Vice President, Marketing and Strategy at Littelfuse. “By incorporating the LST in your latest design, you not only will benefit from its wide operating voltage range, high surge current rating, and compliment of options for microswitch, your SPD will also be more robust to meet the protection demands of your customer’s applications.”

The LST Varistor series offer these key benefits:

  • Facilitate meeting UL1449 listed Type 1 or Type 2 standards by incorporating 200 kA SCCR, 20 kA In, UL1449 Type 4 recognized component assembly.
  • Flexibility of using 50 kA and 75 kA Imax rated devices with the same footprint on PCB.
  • More options for designing remote indication/monitoring of SPD product or system via mechanically triggered AC and DC rated microswitch (Normally Open/Normally Closed, pin length, 2 pin/3 pin/without pin).
  • Clear LST working status indication via a visual tab option that notifies service technicians and maintenance engineers to replace LST at end-of-life (EOL) in order to continue optimal surge protection for the end-product.
  • Wide Operating Voltage Range: Up to 690 Vac for 50 kA version, up to 550 Vac for 75 kA version.

Availability 
The LST Varistor series is available in three trays containing 24 pieces each. Sample requests can be placed through authorized Littelfuse distributors worldwide.

Go HERE for more information 

Source

Related Articles


Latest Articles


Changing Scene

  • Have your Say on the Proposed Regulations for the NWT Builders’ Lien Act

    Have your Say on the Proposed Regulations for the NWT Builders’ Lien Act

    February 14, 2025 The GNWT is modernizing the legal framework for construction liens. In 2023, the Builders’ Lien Act was enacted to replace the Mechanics Lien Act. The new legislation was put in place to address modern construction practices. It sets out the legal processes, systems, rights, and remedies for parties involved in construction disputes.  The GNWT… Read More…

  • Federal Government Investing in Skilled Trades Training for Atlantic Canada

    Federal Government Investing in Skilled Trades Training for Atlantic Canada

    February 14, 2025 Canada is building more homes, bridges and key infrastructure than at any point in recent history. That requires skilled workers in communities across the country, including in the Atlantic provinces. To encourage more people to join the skilled trades, to build the homes Canadians expect and the resilient economy this moment demands,… Read More…

  • Nova Scotia Power Holding Open Houses to Discuss Modernizing the Electrical Inspections Process

    Nova Scotia Power Holding Open Houses to Discuss Modernizing the Electrical Inspections Process

    February 14, 2025 As Nova Scotia continues to experience unprecedented building growth, it’s the perfect time to review and improve the electrical inspection process—with safety as the top priority. Nova Scotia Power and the Department of Labour, Skills, and Immigration are coming together to explore new opportunities—including risk-based electrical inspections—to ensure the process remains safe,… Read More…

  • Alberta EV Tax Begins February 13th

    Alberta EV Tax Begins February 13th

    February 14, 2025 Starting Thursday, Feb. 13, Albertans will be charged a $200 tax when they register their electric vehicles. This amount is in line with what drivers of a typical internal combustion engine vehicle would be expected to pay each year in fuel tax. The tax will be collected by registry agents, and online… Read More…