| Features |
| Circuit breaker type | Miniature circuit breaker |
| Type | Type B |
| Number of poles | 3 |
| International Protection (IP) code | IP20 |
| Pollution degree | 2 |
| Energy limiting class | 3 |
| Installation type | DIN-rail |
| Operational conditions |
| Storage temperature (T-T) | -40 - 70 °C |
| Power |
| Input voltage | 360 - 440 V |
| Input frequency | 50 - 60 Hz |
| Rated current | 20 A |
| Rated voltage | 400 V |
| Dielectric strength | 4000 V |
| Weight & dimensions |
| Width | 53.1 mm |
| Depth | 77.8 mm |
| Height | 88.5 mm |
Legrand circuit breaker RX3 according to EN 60898-1, VDE 0641-11, EN 60947-2, 3-pole, B characteristic, rated current In 20 A, rated switching capacity Icn 6 kA according to EN 60898-1, rated voltage Un 400 VAC, rated frequency 50/60 Hz, energy limitation class 3, fastening on top hat rail EN 60715 using a snap-in fastening, clear information on the front of each device, marking switch position indicator On/Off, with labeling field, attachment of auxiliary devices not possible. Circuit breakers with B characteristic are primarily intended for line protection in light and socket circuits.