| SEL-MR | SEL-MR With Reset Button | |
| Nominal Trip Ratings | 100 A to 800 A | 200 to 800 A |
| Trip Tolerance | ±10% | |
| Typical Trip Response Time | 12 ms | |
| Overhead System Voltage Range | Up to 38 kV (line-to-line) | Not applicable to overhead conductors |
| Underground System Voltage Range | Equal to voltage class of shielded underground cable | |
| Maximum Fault Current | 25 kA for 10 cycles | |
| Cable Diameter Range, Standard Core | 6.35 to 35.56 mm (0.25 to 1.4 in) | 15.24 to 35.56 mm (0.6 to 1.4 in) |
| Cable Diameter Range, Large Core | 20.32 to 50.80 mm (0.8 to 2.0 in) | 30.48 to 58.42 mm (1.2 to 2.3 in) |
| Temperature Range | –40° to +85°C (–40° to +185°F) | |
| Approximate Weight | 140 g (0.31 lbs) | 170 g (0.37 lbs) |