Function and use
NM10-100 plastic case circuit breaker (hereinafter referred to as the circuit breaker) is mainly suitable for infrequent operation of AC 50Hz, rated working voltage 400V and below, and its rated current is from 15A to 100A. It is generally used for power distribution and can also be used to protect motors. Under normal circumstances, the circuit breaker can be used for infrequent line switching and infrequent starting of the motor respectively.
Detailed parameters
| Parameter classification | Parameter item | Parameter value |
|---|
| Model number | NM10-100 |
| Frame rating rated current (Inm A) | 100 |
| Rated operating voltage (Ue V) | AC380/400 |
| Rated insulation voltage (Ui V) | 800 |
| Rated frequency (Hz) | 50 |
| Rated limit short circuit breaking capacity Icu (kA) | 15 |
| Rated operating short-circuit breaking capacity Ics (kA) | 7.5 |
| Flashover distance mm | 50 |
| Rated current (In A) | 20,25,30,40,50,60,80,100 |
| Distribution circuit breaker instantaneous operating current setting value Ii (A) and tolerance | 10In(i>40A), 500A (i≤40A), accuracy ±20% |
| Instantaneous operating current setting value Ii (A) of circuit breaker for motor protection and tolerance | 12In(i>40A), 500A (i≤40A), Accuracy ±20% |
| Single-pole short-circuit protection current action setting value Ii (A) | For power distribution: 14In (i>40A), 600A (i≤40A), Accuracy ±20%
For motor protection: 17In (i>40A), 600A (i≤40A), Accuracy ±20% |
| Tripping time (s) | <0.2 |
| Test current name | Initial state | I/In Appointed time |
| | Inm (A) |
| | In ≤ 60 60 |
| Agreed non-trip current | Cold state | 1.05 1h 2h |
| Agreed tripping current | Hot state | 1.30 ≤ 1h ≤ 2h |
| Serial number | Test current name | Setting current (I/In) Agreed time Starting state |
| 1 | Agreed non-trip current | 1.0 2h Cold state |
| 2 | Agreed tripping current | 1.2 2h Start immediately after sequence 1 test |
| 3 | Returnable current | 7.2 ≤ 10S —— |
