Glossary
NH fuse
What is NH fuse?
Low-voltage high-breaking-capacity fuse: a design with high interrupting capacity for very large currents, originally from industry.
What matters about NH fuse in practice?
On board it is found mainly in large systems and where very high short-circuit currents must be controlled. Replacing it usually requires tools and a cover — that is intentional, not awkwardness.
For the usual on-board currents, Class-T or MEGA fuses are the more practical choice. In every case, the decisive question remains the interrupting capacity.
Related terms
Still unclear?
We are happy to explain it for your specific case.