SCOPE OF APPLICATION
STW2-125 series DC miniature circuit breaker have rated working voltage up to 1000V, mainly suitable for overload and short circuit protection of DC power distribution system equipment and electrical equipment with rated current 125A and below, widely used in power, postal, transportation, mining enterprises and various fields, also can be used for infrequent on-off operation. In China, the shell current and rated short-circuit breaking capacity of our products are the highest in the same category.
STW2-125DC series DC miniature circuit breaker are high-performance DC miniature circuit breaker with a single-pole width of 27mm, rated current up to 125A, rated short-circuit breaking capacity up to 15KA, and various technical parameters leading in China.
| STW2 Series circuit breaker | STW2-125DC |
|---|---|
| Shell frame grade Current (A) | 125 |
| Standards | IEC 60947-2 |
| Rated Insulation voltage Ui | 1000V |
| Rated Impulse Withstand Voltage Uimp | 6kV |
| Rated current (A) | 32A,40A,50A,63A,80A,100A,125A |
| Rated voltage | DC250V(1P), 500V(2P), 800V(3P), 1000V(4P) |
| Electromagnetic trip characteristics | 10In + 20% |
| Number of poles | 1P, 2P, 3P, 4P |
| Unipolar width | 27mm |
| Icu | 10KA (In≤100A), 15KA (In=125A) |
| Ics | 7.5KA (In≤100A), 10KA (In=125A) |
| Reference temperature | 30°C |
| Utilization Category | A |
| Mechanical life | 20,000 Cycles |
| Electrical life | 2000 Cycles |
| Protection Degree | IP20 |
