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Application:
ST1N-160 Moulded Case Circuit Breaker is one of the most advanced type breakers in theworld, which adopts international advanced design and manufacture technology. They aresuitable for short circuit and overload protection for circuit of AC 690V 50/60Hz, rated currentfrom 12.5A to 630A.Its rated insulation voltage is 690V. It can make and break the nonfrequentlycircuit in the normal conditions. It takes protect effect when mouse cage motorsnon-frequent start, breaking off working and protecting overload, short circuit and lackingvoltage.
| Type | ZST1N-160 | ZST3N-250 | ZST5N-400 | |
| Poles number | 3 | 3 | 3 | |
| Rated current In (A) | 16-160 | 100-250 | 250-401 | |
| Rated operating voltage Ue(V) AC 50/60Hz | 690 | 690 | 690 | |
| Rated insulation voltage Ui(V) | 800 | 800 | 1000 | |
| Rated impulse withstand voltage Uimp(KV) | 8 | 8 | 8 | |
| Utilization category | A | A | A | |
| Rated limitedshort-circuitbreaking capacitylcu(KA) | 220/230V | 25 | 50 | 70 |
| 380/415V | 16 | 36 | 36 | |
| 400V | 10 | 25 | 30 | |
| 500V | 8 | 20 | 25 | |
| 690V | 3 | 5 | 20 | |
| 500V-3poles in series | 16 | 36 | 36 | |
| Rated short-circuit service breaking capacity lcs(5icu) | 100 | 75 | 100 | |
ZST1N-160 high quality ABB replacement moulded case circuit breaker MCCB