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| Type | ST-K06 | ST-K09 | ST-K12 | |
| Rated working voltage | 660/690V | |||
| Rated working current | AC-3 | 6 | 9 | 12 |
| AC-4 | 2.6 | 3.5 | 5 | |
| Rated heat current | 16 | 16 | 20 | |
| Connecting max. current(A) | 380V | 60 | 90 | 120 |
| 660V | 72 | 108 | 144 | |
| Breaking max. current(A) | 380V | 48 | 72 | 96 |
| 660V | 60 | 90 | 120 | |
| AC3 capacity of phase 3 squirrel-cage motor AC3(kw) | 220V | 1.5 | 2.2 | 3 |
| 380V | 2.2 | 4 | 5.5 | |
| 660V | 3 | 5.5 | 7.5 | |
| Electric life | AC-3 | 1200 | ||
| AC-4 | 300 | |||
Mini Contactor LC1-K