KNB1-63 series Miniature Circuit Breaker is nice in appearance, reasonable in structure, sound in feature and high in breaking capacity. Installed with standard DIN rail, it is convenient and easy in usage. It is mainly used in the line of AC 50/60Hz, rated working voltage to 240V/415V, and rated current to 63A as protection against overload and short-circuit. It can be used as infrequent on-and-off operation and changeover.
It complies with standard of GB10963 and IEC/EN60898.
It complies with standard of GB10963 and IEC/EN60898.
| Sequence NO . | Release | Test current I/In | Start state | Tripping time | Expected restlt |
| 1 | B,C,D | 1.13In | Cold state | t≤1h | Not tripping |
| 2 | B,C,D | 1.45In | Start right after the serial NO . 1 test | t<1h | Tripping |
| 3 | B,C,D | 2.55In | Cold state | 1s<t<60s | Tripping |
| 4 | B C D | 3In 5In 10In | Cold state | t≤0.1s | Not tripping |
| 5 | B C D | 5In 10In 20In | Cold state | t<0.1s | Tripping |
| Frame class | 63A |
| Rated working voltage | 240V/415V |
| Rated frequency | 50/60Hz |
| Rated working current | 1,3,6,10,16,20,25,32,40,50,63A |
| Making and breaking capacity | 6000A(6~40A),4500A(50,63A) |
| Release type | B,C,D |
| Poles | 1,2,3,4P |
| Mechanical life | 20000 |
| Electric life | 4000 |