For load switch-fuse combination, it is the load switch that bears the overload current and the closing & breaking of normal working current and also bears the closing & breaking of "transfer current". While the high-voltage fuse bears the short circuit protection of transformer high-voltage side and overload protection. For a set of load switch and the fuse with three triggers, once any trigger acts, its link gear will separate the brake of the three-phase load switch at the same time. The organic combination of both can help to meet the operating protection requirements of power distribution system under various normal and fault conditions.
| Model | YCC-T-12/T125-31.5 | YCC-T-24/T125-31.5 |
| Type report number | 15Q1691-S | 15Q1690-S |
| Rated voltage | 12kV | 24kV |
| Rated current | 125A | 125A |
| Rated frequency | 50Hz | 50Hz |
| 1min rated short-time power frequency withstand voltage (phase / fracture) | 42/48kV | 65/79kV |
| Rated lightning impulse withstand voltage (phase / fracture) | 75/85kV | 125/145kV |
| Rated circuit charge breaking current | 31.5kA | 31.5kA |
| Rated short circuit closing current | 80kA | 80kA |
| Rated transfer current | 1750A | 1450A |
| Rated commutation current | 1750A | 1450A |
| Partial discharge test | 20pC | 20pC |
| Arc test | 20kA/0.5s | 20kA/0.5s |
| Annual leak rate | ≤0.1% | ≤0.1% |
| Mechanical life | ≥5000 times | ≥5000 times |
| Weight | 1400:178kg/1600:188kg | 1400:178kg/1600:188kg |
