A6T80 – GOULD 80A 600V CLASS T FAST ACTING FUSE

Class T fuses are physically smaller and faster-acting than most other 600V fuse classes, with a unique rejection feature that prevents them from being installed in holders designed for Class J, R, or L fuses. Their compact size allows them to fit in tight spaces while still delivering high interrupt ratings — typically up to 200,000A — making them a popular choice in industrial and commercial equipment where space and speed of response are critical.

Yes — Class T is a standardized UL class, so the GOUA6T80 (Gould/Mersen) can generally serve as a direct replacement for other manufacturers' 80A 600V Class T fuses, such as the Bussmann JJN-80 or Littelfuse JLLN080. Always confirm the replacement matches the original's amperage, voltage rating, and class designation before installation.

Class T fuses rated 600V are typically suitable for both AC and DC circuits, but the DC voltage rating may differ from the AC rating — always check the fuse's published datasheet or markings to confirm the DC voltage rating before use in a DC application. Contact our team if you need help verifying suitability for your specific system.