Littelfuse Launches 1500 Volt Solar Fuses Rated 25 to 32 Amperage

EIN solar fuse 400

Dec 11, 2019

Littelfuse power control, and sensing, announced today the expansion of its SPXI series in-line and SPXV series string solar fuses with 25 to 32 amperage models in a compact 10 mm x 85 mm case size. Used in photovoltaic (PV) installations, these 1500 V DC fuses protect PV systems from overloads and short circuits to minimize damage to solar panels. The compact case size offers design flexibility when space is at a premium.

“As the solar panels create more energy, and efficiencies increase, so does the demand for higher protection on the photovoltaic infrastructure,” said Sakthidharan Krishnamoorthy, product manager, Littelfuse Industrial Business Unit. “With a 50 kA DC interrupting rating, these 1500 V fuses meet the latest code requirements – in a smaller case size – to make upgrading to a higher rating easier by using existing harnesses and fuse holders.”

Other key benefits of the solar in-line and string fuses:

  • Product label features QR code, offering access to part numbers, volts, SAP variables, programming terms, and date codes in real time
  • SPXI and SPXV solar fuses meet UL 248-19 and IEC 60269-6 photovoltaic fuse standard requirements
  • SPXI solar fuses can be electrically insulated by overmolding or heat-shrinking to streamline the set-up process
  • SPXV fuses are compatible with existing Littelfuse touch-safe fuse holders, which have been rerated up to 32 A 

Go HERE for more information

Related Articles


Latest Articles


Changing Scene

  • EB Horsman & Son Introduce Hector Cham as New Richmond Branch Manager

    EB Horsman & Son Introduce Hector Cham as New Richmond Branch Manager

    October 23, 2026 EB Horsman & Son is pleased to announce the appointment of Hector Cham as Branch Manager of their Richmond branch. With nine years of experience at EB Horsman & Son, Hector has built a strong foundation in customer service, sales and branch operations. He began his career with EBH in Lighting Inside… Read More…

  • EBH Introduce New eCommerce Feature: Share Product Lists with Your Team and Customers

    EBH Introduce New eCommerce Feature: Share Product Lists with Your Team and Customers

    October 23, 2026 Share Product Lists in Seconds: A New Way to Collaborate Online Collaboration just got easier. EB Horsman & Son are excited to introduce List Sharing, a new feature on the EB Horsman & Son eCommerce platform that allows customers to quickly share saved product lists with teammates, customers, and project partners. Whether… Read More…

  • EB Horsman & Son Recognized with AD Giving Back Award

    EB Horsman & Son Recognized with AD Giving Back Award

    October 23, 2026 EB Horsman & Son is proud to announce they have received the Giving Back Award at the AD Electrical North American Meeting, recognizing our ongoing commitment to community involvement, charitable giving, and supporting those in need. “For more than 125 years, giving back has been an important part of who we are. As… Read More…

  • NETCO Executive Director Speaks on Labour Mobility Act Before House of Commons

    NETCO Executive Director Speaks on Labour Mobility Act Before House of Commons

    October 23, 2026 NETCO announced on LinkedIn that Executive Director, Chris Swick appeared before the House of Commons Standing Committee on Human Resources, Skills and Social Development and the Status of Persons with Disabilities (HUMA) to speak on Bill C-266 – the National Framework on Skilled Trades and Labour Mobility Act. “While NETCO supports the… Read More…