FUSERBLOC uR are multipole fuse combination switches with manual right and front operating and high-speed fuses.
When used in combination with high-speed fuses (uR curve), they can break or make under load, provide safe isolation and protection from overcurrent for power semiconductors (variable drives, inverters, etc.) up to 1250 A.
This range includes versions for direct and external operation, 2, 3 and 4 poles and up to 1250 A.

Conformity to standards

IEC 60947-3
EN 60947-3


Limiting the short-circuit current

This fuse solution for limiting the shortcircuit current is by far the most efficient and economical on the market (uR fuses).

Optimum safety

Double phase breaking (upstream and downstream from the fuse) and fully visible isolation keep people and equipment protected from overcurrent.

High breaking capacity

High breaking capacity fuses (300  kA rms) provide protection from overloads and short circuits.


  • Industry - Protection for drives and motors

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