| Frame current, Inm (A) | 30AF | |
| Type | NT53-32 | |
| Pole & element | 2P1E | |
| Rated insulating voltage, Uimp (kV) | 2.5 | |
| Rated current, In (A) | 10,15,20,30 | |
| Rated working Voltage, Ue (V) | AC230/110 | |
| Breaking capacity, Ic (A) | 1500 | |
| Overload characteristics | 1.13 In(cold state) not acting time | +30℃,≥1h |
| 1.45 In(heat state) acting time | +30℃,<1h | |
| 2.55 In(cold state) acting time | 1s<t<60s | |