| Model | TNR-SZ20 | TNR-SZ40 | TNR-SZ60 | TNR-SZ80 | TNR-SZ100 | TNR-SZ120 | TNR-SZ150 |
| Nominal discharge current In(kA) | 10 | 20 | 30 | 40 | 60 | 80 | 100 |
| Maximum discharge current lmax(kA) | 20 | 30 | 40 | 60 | 80 | 120 | 150 |
| Continuous operating voltage Uc(V~) | 275~385 | 320~440 | 320~440 | 385~440 | 385~440 | 385~440 | 385~440 |
| Protection level Up(kA) | <2.0 | <2.5 | <2.5 | <2.5 | <2.5 | <3.0 | <3.0 |
| Introduction of power line intercepting area(mm2) | ≥6 | ≥6 | ≥10 | ≥16 | ≥16 | ≥16 | ≥16 |
| Ground intercepting area (mm2) | ≥10 | ≥16 | ≥16 | ≥25 | ≥25 | ≥25 | ≥25 |
| Shape size (mm) | 280×210×105 / 340×245×120 | ||||||

