SCOPE OF APPLICATION
STW2-63 series miniature circuit breakers have short circuit protection, overload protection, control, isolation and other functions, suitable for ac 50HZ/60HZ, rated voltage AC240/400V, rated current to 63A in industrial, civil construction, energy communication and infrastructure and other fields of low-voltage terminal distribution.
IEC 60898-1,GB/T 10963.1
STW2-63 series circuit breakers are characterized by small size, simple structure and high reliability, and can be equipped with auxiliary contact, alarm contact. shunt trip, undervoltage trip, overvoltage trip, over-voltage trip and other accessories, among which the auxiliary and alarm width is 9mm, while the width of other accessories is 18mm.
| STW2 Series circuit breaker | STW2-63AC |
|---|---|
| Shell frame grade Current (A) | 63 |
| Standards | IEC 60898-1 |
| Rated Insulation voltage Ui (V) | 500 |
| Rated Impulse Withstand Voltage Uimp (kV) | 4 |
| Rated current (A) | 1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63 |
| Rated voltage | 240/400V (1P, 1P+N), 400V (2P, 3P, 4P) |
| Rated frequency (Hz) | 50/60 |
| Thermo-magnetic release characteristic | B (3–5In), C (5–10In), D (10–20In) |
| Number of poles | 1P, 1P+N, 2P, 3P, 3P+N, 4P |
| Unipolar width | 18mm |
| Rated breaking capacity | 6KA |
| Dielectric test voltage at ind. Freq for 1 min | 2kV |
| Reference temperature | 30°C |
| Mechanical life | 20,000 Cycles |
| Electrical life | 4000 Cycles |
| Protection degree | IP20 |
| Terminal size top / bottom for cable (mm²) | 25 |
| Connection | From top and bottom |
