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October 2021 – Littelfuse’s PSX fuses offer better protection in a smaller case size

Published on: 28/10/2021

Littelfuse’s PSX Fuses are ideal for battery energy storage systems, photovoltaic inverters, rectifiers and much more

Littelfuse PSX fuse image, three PSX fuses on the right and text on the left. Littelfuse's PSX Fuses are ideal for battery energy storage systems.

Littelfuse’s PSX series fuses are extremely fast-acting, offering high speed performance up to 1500Vdc, ranging from 80A to 1400A in the smallest NH XL package sizes on the market.

The PSX series of fuses have a breaking capacity up to 200kA and can be used in a wide range of applications but are specifically designed for: battery energy storage systems, photovoltaic inverters, DC common bus systems, large industrial regenerative drives, rectifiers and metal processing equipment.

The PSX fuse series are certified to UL248-13 and designed to meet IEC 60269-4 high speed semiconductor fuse standard and IEC 60269-7, a new battery protection fuse standard in development.

The key features of the PSX series are: low watt loss, visual indication, low minimum breaking capacity, a compact size and availability in three terminations.

Discover how PSX fuses can help protect your operations today.


GD Rectifiers has access to a wide range of Littelfuse products and distributes their circuit protection, power semiconductors and solar product ranges.

For further information on Littelfuse products or to discuss your requirements, please contact GD Rectifiers on: 01444 243 452 or email:

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