Minimize peak currents and protection against arc forming

High speed fuses are specially designed to minimize the I²t, peak current let-through and arc voltage. Ensuring the fast opening and clearing of a fault requires rapid element melting. To achieve this, the high-speed fuse element has fewer sections of a different design than a similarly rated industrial fuse and typically has higher operating temperatures.

As a result of their higher element temperatures and smaller packages, high speed fuses typically have higher heat dissipation requirements than other fuse types. To help dissipate heat, the body (or barrel) material used is often a higher grade with a higher degree of thermal conductivity.

High speed fuses are primarily for protecting semiconductors from short-circuits. Their high operating temperatures often restrict using element alloys with a lower melting temperature to assist with overload operation. The result is that high speed fuses are generally not “full range” (i.e. they operate on short-circuit and overload conditions) and have more limited capacity to protect against low-level overcurrent conditions.

Why use EATON Electronics’ high-speed fuses?

  • Extremely high heat dissipation requirements
  • IEC Voltage ratings: 690, 1.000, 1.250 Vac
  • High Voltage: 2.000Vac, 4000Vac and more
  • Amperage ratings up to 7.500A

High-speed fuses you can rely on!

  • UL-Recognized
  • Various end fittings- and body size according to the standards
  • With or without indication
  • Accessories – fuse holders, remote signalling


A complete overview of Eaton IEC high speed fuses?

Download the Eaton IEC high speed fuses catalog

Find out which high speed fuses are suitable for your application?

Download the Eaton fuses application guide

Applying high speed fuses in your maritime DC power systems?

Eaton offers a wide range of (customer specific) high speed fuses specifically designed for application in your onboard DC grid. Our experienced consultants are happy to advise you on the right product. KWx makes sure you will always meet your special electrical and mechanical specifications!