DC circuit breakers are mainly used for overload and short circuit protection of distributed power and protection circuits and power supply equipment in DC systems with rated insulation voltage of 1600V, rated working voltage of DC 1500V and below, and rated current of 250A and below.
Normal working environment
1. The ambient air temperature is -5 °C - +40 °C.
2. The altitude of the installation site does not exceed 2000m.
3. The relative humidity of the air at the installation site does not exceed 50% at a maximum temperature of +40 ° C, and may have a relatively high relative humidity at a lower temperature, for example, 90% at 20 ° C. Special measures should be taken for condensation that occasionally occurs due to temperature changes.
4. The pollution level is level 2.
5. The main circuit installation category of the circuit breaker is III, and the other auxiliary circuit and control circuit installation categories are II.
6. The circuit breaker is suitable for electromagnetic environment A.
7. The circuit breaker shall be installed in a place where there is no danger of explosion and no conductive dust, no enough corrosion metal and damage to insulation.
8. The circuit breaker should be installed in a place where there is no rain or snow.
9. Storage conditions: ambient air temperature -40 ° C - + 70 ° C.
| model | KATM1-250 | |
| Leakage circuit breaker rated voltage Ue(V) | DC1500 | |
| Rated insulation voltage Ui(V) | 1600 | |
| Rated impulse withstand voltage Uimp(kV) | 12 | |
| Rated current In(A) | 100/125/160/180/200/225/250 | |
| Series | 2 | |
| Rated ultimate short-circuit segmentation capability Icu(kV) | 15 | |
| Rated operating short-circuit breaking capacity Ics(kA) | 15 | |
| Electrical life | Mechanical maintenance | 7000 |
| Electrical life | 1000 | |
| Type of protection | Distribution protection | √ |
| Motor protection | √ | |
| Tripping method | Thermal magnetic protection | √ |
| Single magnetic protection | √ | |
| Installation method | Fixed board front wiring | √ |
| Fixed board rear wiring | √ | |
| Product accessories | Undervoltage release | √ |
| Shunt release | √ | |
| Alarm contact | √ | |
| Auxiliary contact (one open and one closed) | √ | |
| Auxiliary contact (two open and two closed) | √ | |
| Expansion terminal | √ | |
| AC operation CD1 | √ | |
| AC and DC General Electric Exercise CD2 | √ | |
| Round direct hand exercise | √ | |
| Square direct hand exercise | √ | |
| Round extended hand exercise | √ | |
| Square extension hand exercise | √ | |
| Phase spacer | √ | |
| Attachment installation | Yes | |
| Isolation function | Yes | |
| Use category | Class A | |
| Installation size | 35*161*Φ5 | |
| Size - fixed front connection (width * height * length) | 200*135*86 |
