Function
FUSERBLOC uR are multipole fuse combination switches with manual right front-side operation and high-speed fuses.
Combined with high-speed fuses (uR curve), they can break or make under load, and provide safe isolation and protection from overcurrent for power semiconductors (variable drivers, 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
References
FUSERBLOC uR is available in 13 versions
| Item | Rated current [A] | Number of poles | Fuse size | Frame size | Type | Select |
|---|---|---|---|---|---|---|
| 38DC1024 | 250 | 4 | NH1 | 15 | I-0-Test | |
| 38U12024 | 250 | 2 | NH1* - K110 | 15 | I-0-Test | |
| 38U13024 | 250 | 3 | NH1* - K110 | 15 | I-0-Test | |
| 38U12039 | 400 | 2 | NH1 - K110 | 16 | I-0-Test | |
| 38U13039 | 400 | 3 | NH1 - K110 | 16 | I-0-Test | |
| 38U12050 | 500 | 2 | NH2 - K110 | 17 | I-0 | |
| 38U13050 | 500 | 3 | NH2 - K110 | 17 | I-0 | |
| 38U12063 | 630 | 2 | NH2 - K110 | 17 | I-0 | |
| 38U13063 | 630 | 3 | NH2 - K110 | 17 | I-0 | |
| 38U13080 | 800 | 3 | NH3 - K110 | 17 | I-0 | |
| 38U12120 | 1250 | 2 | NH3 - K110 | 18 | I-0 | |
| 36803121 | 1250 | 3 | NH3 - BK50 | 18 | I-0-Test | |
| 38U13120 | 1250 | 3 | NH3 - K110 | 18 | I-0 |
Advantages
Limiting short-circuit current
This fuse solution for limiting short-circuit current is by far the most efficient and economical in the market (uR fuses).
Optimum safety
The double disconnect per phase (upstream-downstream of the fuse) and the fully visible cut-off guarantee the safety of people and equipment against overcurrents.
High breaking capacity
High breaking capacity fuses (300 kA rms) provide protection from overloads and short circuits.
Applications
- Industry - Protection for drives and motors
Environmental data
RoHS compliant
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