| Model | UKGD-400 | UKGD-630 |
| Poles | 2P/4P | 2P/4P |
| Rated Current (Ie) | 250-400A | 400-630A |
| Rated Insulation Voltage (Ui/Ue) DC-20 | 1500V | 1500V |
| Dielectric Strength | 10kV | 10kV |
| Rated Impulse Withstand Voltage | 12kV | 12kV |
| Conductor Cross‑section (Cu/mm²) | 120‑240 | 2×185 |
| Rated Making Capacity (A) | 4000 | 6300 |
| Rated Breaking Capacity (A) | 3200 | 5040 |
| Rated Short‑Time Withstand Current (kA) | 8kA (1s) 10kA (0.05s) 20kA (0.15s) |
8kA (1s) 10kA (0.05s) 20kA (0.15s) |
| Rated Short‑Circuit Making Capacity (kA) | 30 | 40 |
| Utilization Category | DC‑21B/PV2 | DC‑21B/PV2 |
| Mechanical Life (operations) | 10,000 | 10,000 |
| Degree of Protection | IP20/IP66 (outside enclosure) | IP20/IP66 (outside enclosure) |


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