Main Technical indicators
1.The thermal release of the circuit breaker has the inverse time limit characteristic: the electromagnetic release is an instantaneous action, and the action characteristics of the overcurrent release of the circ uit breaker for distribution when each pole is powered on at the same time is shown in Table 2.
Table 2
| Rated current of release ( A) | Thermal release (ambient temperature+40℃) | Operating current of electromagnetic release(A) | |
| 1.05In Inaction time (cold state) | 1.30In Action time (hot) | ||
| In≤63 | ≥1h | <1h | 10ln±20% |
| 63≤ln≤125 | ≥2h | <2h | 10ln±20% |
| 125≤ln≤1600 | ≥2h | <2h | 5ln±20% or 10ln±20% |
Table 3
| Setting current | 10≤ln≤250 | 250≤ln≤1600 |
| 1.0ln Inaction time (cold state) | ≥2h | ≥2h |
| 1.20In Action time (hot) | <2h | <2h |
| 1.50ln Action time (hot) | 4min | 8min |
| 7.20In Action time (cold state) | 4s | 6s |
| Instantaneous tripping action current | 12ln±20% | 12ln±20% |
2. When the applied voltage of the shunt release is between 70% and 110% of the rated control power supply voltage, the circuit breaker can be reliably broken.
3. The under voltage release can reliably break the circuit breaker when the power supply voltage drops to within 70% of the rated working voltage of the under voltage release; when the power supply voltage is lower than 35% of the rated operating voltage of the under voltage release, the under voltage release can prevent the circuit breaker from closing; when the power supply voltage is higher than 85% of the rated width of the under voltage release, the under voltage release can ensure the reliable closure of the circuit breaker.
Main technical parameters of circuit breaker
Rated insulation voltage UI=1000V, rated working voltage Ue=400V/690V, raged impulse withstand voltage Uimp=12kV. The circuit breaker has isolation function.
| Model | Rated current | Rated limit short circuit t breaking capacity Icu(kA) | Rated operating short-circuit breaking capacity Ics(kA) | Arc distance(mm) | ||
| AC400V | AC690V | AC400V | AC690V | |||
| HM1-63S | (6)10/16/20/2532/40/50/63 | 25 | — | 18 | — | ≤50 |
| HM1-63H | 35 | — | 22 | — | ||
| HM1-125S | (10)16/20/25/32/4050/63/80/100/125 | 35 | — | 22 | — | ≤50 |
| HM1-125H | 50 | 20 | 50 | 10 | ||
| HM1-250S | (100)125/140/160180/200/225/250 | 35 | — | 22 | — | ≤50 |
| HM1-250H | 50 | 20 | 50 | 10 | ||
| HM1-400S | 225/250/315350/400 | 50 | — | 35 | — | |
| HM1-400H | 65 | 20 | 65 | 15 | ||
| HM1-400L | 100 | — | 75 | — | ||
| HM1-630S | 400/500/630 | 50 | — | 35 | — | ≤100 |
| HM1-630H | 65 | 20 | 65 | 15 | ||
| HM1-630L | 100 | — | 75 | — | ||
| HM1-800 | 630/700/800 | 75 | — | 50 | — | ≤100 |
| HM1-1600 | 800/1000/1250/1600 | 85 | — | 50 | — | ≤100 |
Note:
1.The data in () is not recommended;
2.HM1-63，Ui=690V，Uimp=6kV,Ue=400V;
3.HM1-800/1600，Ui=800V，Uimp=8kV，Ue=400V。
Technical data of ancillary devices
1.The ratings of auxiliary contacts and alarm contacts are shown in Table 5.
Table 5
| Classification | Rated current of shell frame(A) | Conventional heating current Ith(A) | Rated working current at 380V AC le(A) |
| Auxiliary contact | Inm≤250 | 3 | 0.3 |
| Inm≥400 | 3 | 0.4 | |
| Alarm contact | 63≤Inm≤1600 | 3 | 0.3 |
2. When the applied voltage of the shunt release is between 70% and 110% of the rated control power supply voltage, the circuit breaker can be reliably broken.
3. The under voltage release can reliably break the circuit breaker when the power supply voltage drops to within 70% of the rated working voltage of the under voltage release; when the power supply voltage is lower than 35% of the rated operating voltage of the under voltage release, the under voltage release can prevent the circuit breaker from closing; when the power supply voltage is higher than 85% of the rated width of the under voltage release, the under voltage release can ensure the reliable closure of the circuit breaker.
