DC Bolt Down Fuses |
High Current Circuit Protection

Bolt Down Fuses

A bolt down fuse is a type of high-current fuse that is fastened with bolts for a secure and vibration-resistant connection. Unlike plug-in or blade fuses, bolt down fuses are designed to handle higher amperages, making them ideal for vehicles, heavy machinery, and renewable energy applications where safety and reliability are critical.
At Prosemi, we specialize in providing reliable MIDI and MEGA DC Bolt Down Fuses designed for high current protection in automotive, industrial, and energy systems. With a secure bolt-mounted design, our fuses ensure durability, stability, and consistent performance even under demanding conditions.
Prosemi ensures timely and efficient supply of our products. The standard lead time for Bolt Down Fuses is 6 weeks. For urgent requirements or special specifications, please contact our team to confirm availability.

 
 
 
 
 

Features And Benefits

  • Rated Voltage：32VDC, 58VDC, 70VDC

  • Rated Current：30-200A

  • Interrupting Rating: 2500A@32VDC, 1500A@58VDC, 2500A@70VDC

  • Allowable use conditions: -40˚C ~125˚C

  • Recommended installation torque: 4~6 Nm(12Nm Max.)/M5, 6~9 Nm(12Nm Max.)/M6

  • Metal material：Tinned copper alloy

  • Flammability rating：U.L. 94 V0

  • Standard：ISO 8820, ISO 16750, GB/T 31465, IATF 16949, ISO 20934

    • Precisely protects circuits for fans, heaters, batteries, and other components from large current surges.

    Prevents false triggering caused by instantaneous current fluctuations, ensuring high reliability.

    Application

    Automotive Applications: Applicable to various types of vehicles, including passenger cars, SUVs, trucks, buses, and off-road vehicles, providing overcurrent and short-circuit protection for circuits such as fans, heaters, batteries, and starters.
    Other Applications: Also suitable for specialized equipment such as power tools, offering protection for high-current circuits in these devices.