IEC 60420:1990
High-voltage alternating current switch-fuse combinations
OVERVIEW
This standard applies to three-pole units for public and industrial distribution systems which are functional assemblies of switches including switch-disconnectors and current-limiting fuses and thus able to interrupt: -any load current up to the rated breaking current of the switch; -any over-current up to the rated short-circuit breaking current of the combination by which automatic interruption is initiated. This standard applies to combinations designed with rated voltages above 1 kV and below 52 kV for use on three-phase alternating current systems of either 50 Hz or 60 Hz.
COMMENTS
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PRODUCT DETAILS
| Status | Withdrawn - 02 Jan 2026 |
|---|---|
| Edition | 1990 |
| No. of Pages | 97 |
| ICS Classification | 29.130.10 High voltage switchgear and controlgear |
| Committee | TC 17/SC 17A |
| Available for Purchase | For sale in Singapore only |
| Adoption | IEC : 0 |