Product Type: Fuses / Circuit Protection

EV1K Series – 1000VDC, 60-600A Fuse

The Littelfuse EV1K series is an electric vehicle (EV) fuse designed to protect high-voltage, high-current on-board applications in electric and hybrid vehicles as well as offboard charging. It was specifically built from the ground up to meet the stringent requirements and standards of the electric vehicle industry.


  • Mechanical shock and vibration durability to increase product longevity
  • High interrupting rating and open state resistance for maximum short circuit protection
  • Thermal shock resistant to handle temperature fluctuations for reliable cycling performance
  • Temperature and humidity resistant to withstand a wide variety of environmental conditions

End Markets

  • Electric and hybrid passenger vehicles
  • Commercial bus, truck, and other heavy-duty electric and hybrid vehicles
  • Construction and agriculture equipment
  • On-board and off-board charging infrastructure


  • Battery pack protection
  • Traction inverter protection
  • Energy storage
  • Power conversion
  • High voltage power distribution
  • Battery disconnect unit


UL/CSA Listed Power Fuses

Mersen’s comprehensive power fuse offering covers a complete range of applications and a complete range of circuit-protection needs. Whether it’s the characteristics of our Tri-Onic® Time-delay fuses, the high current-limiting capacity of our original Amp-Trap® power fuses, the cost-efficient protection of our One-Time fuses, or any of our complete line of North American and European fuses, Mersen has the fuse you need.

Thermal Circuit Breakers

QLB and QMB series are compact and cost effective thermal circuit breakers with a wide range of amp ratings from 3A – 40A and offered in single pole and push-to-reset with safety agency certifications. We offer a large variety of bushing types, terminals, name plates, button colors and printing with custom configurations available.

Circuit Breaker Protection

  • UL 489, UL 508 or UL 1077
  • Two lines of AC or DC UL489 Miniature Molded Case Circuit Breakers
  • UL508 Manual Motor Controllers “Suitable as Motor Disconnect”
  • Three Phase Adjustable Trip Miniature Circuit Breakers/Manual Motor Controllers
  • Two lines of UL1077 Recognized Supplementary Protectors

Midget Fuse Links and Miniature UL/CSA Fuses and Fusegear

Mersen’s international range of midget and miniature dimension and PC mount fuses offers you all the protection you require. A wide range of ratings. Special characteristics like time delay and low I2t. All within a footprint of 1-1/2″ x 13/32″ or less.


Mersen offers a comprehensive line of North American (UL and CSA) fusegear.

Mersen has an extensive line of fuse blocks and fuse holders, including durable Class H, K, or R blocks, UltraSafe™ models for the small footprints, traditional Class J blocks, space-saving “SJ” blocks, 600V Class CC and midget dimension holders, and a dozen other fuse holder solutions.

Distribution Blocks

Mersen power distribution blocks provide a safe and easy method of splicing cables, splitting primary power into secondary circuits and fulfilling requirements for fixed junction tap-off points.

Mersen’s comprehensive line of Power Distribution Blocks (PDBs) includes open style and enclosed blocks in a wide range of configurations. Copper and aluminum blocks are available in either style with a full complement of accessories.

PV Fuses And Fusegear

Mersen HelioProtection® PV products have been tested and certified to the latest industry standards for use in photovoltaic applications and guarantee the level of performance required by the PV industry.

Generating electricity from solar energy is an extremely reliable process – as long as it’s properly protected! Mersen offers a trusted range of electrical protection solutions that help protect your solar power investment including fuses and fuse holders. Thanks to Mersen’s innovative HelioProtection® product line, faulty circuits are safely isolated and system longevity and reliability are increased allowing for continuous generation of clean and efficient power.

Semiconductor Protection Fuses

Semiconductor protection fuses are used to protect against overcurrent conditions in power electronic equipment. They are specifically designed to reduce the I2t, peak let-through current and arc voltages during a fault condition.

Mersen affords OEM designers and equipment-maintenance personnel a comprehensive line of Form 101 high speed fuses in ratings from 130 to 1500VAC. Plus, Square Body North American and European-Dimension high speed fuses in 690/700 and 1250/ 1300V ratings (four sizes of each). Plus, compatible fuse blocks and accessories such as blown-fuse indicators, Trigger® switch actuators, and add-on switches.

Railway And Traction Power Converter Protection

Mersen DC high performance power fuses were developed to provide superior protection for railway power circuits. They have lower I2t to minimize damage to components in case of short circuits, and have lower watts loss and longer life.