| Cat. No. | C2227 | C2228 | C2229 | C2230 | C2231 |
| ANSI class | 57-21 | 57-22 | 57-23 | 57-24 | 47-25 |
| Creepage distance (mm) | 356 | 559 | 737 | 1015 | 1145 |
| Dry arcing distance (mm) | 165 | 241 | 311 | 368 | 438 |
| Cantilever strength (kN) | 12.5 | 12.5 | 12.5 | 12.5 | 12.5 |
| Low frequency dry flashover voltage (kV) | 80 | 110 | 125 | 150 | 175 |
| Low frequency wet flashover voltage (kV) | 70 | 100 | 115 | 135 | 160 |
| Critical impulse flashover, pos (kV) | 130 | 180 | 210 | 255 | 290 |
| Critical impulse flashover, neg (kV) | 155 | 205 | 260 | 340 | 380 |
| Test voltage to ground (kV) | 15 | 22 | 30 | 44 | 44 |
| Max . RIV at 1MHz (μV) | 100 | 100 | 200 | 200 | 200 |
| Net weight, each, approx (kg) | 7.5 | 10.5 | 12.7 | 16.8 | 19.5 |
| Number in standrad package | 6 | 3 | 3 | 2 | 2 |
