RCBOs combine residual current and circuit breakers in one device (FI/LS combination). They protect people from residual currents and systems from short circuits and overloads. The switches in the DRCBO 3 series work independently of the mains voltage and are characterized by a high rated switching capacity. Separate displays provide a quick overview of the current operating status. DRCBO 3s can be easily installed and removed. Type A switches are sensitive to pulse and alternating current. This function is independent of the mains voltage. Switches with tripping characteristics C are optimized for circuits with high inrush or peak currents. KV-design switches have a response delay and are therefore considerably less sensitive to short-term pulse-shaped residual currents. They thus increase system availability. They can generally be used instead of a standard switch, as their protective function is completely retained. Properties: tripping independent of auxiliary voltage, sensitive for alternating and pulsating direct residual currents (type A), small size for all rated currents, high short-circuit strength, green-red contact position indicator, residual current trip indicator, clamping yoke terminals with rear plug protection and wide clamping cross-section range for rail and cable wiring on both connection sides, neutral conductor on the right, tristable locking slides for easy installation and removal, mounting type: quick attachment to mounting rail, installation position as desired, feed-in as desired, areas of application: protection of circuits in residential and commercial buildings as well as industrial plants with TN-S, TT and TN-CS networks. In IT networks, FI/LS switches can be provided for shutdown in the event of a second earth fault. Use in systems with TN-C networks and for protecting circuits in which power electronics equipment can cause smooth direct residual currents or residual currents with frequencies other than 50/60 Hz is excluded.
| Property | Value |
| Tripping characteristic: | C |
| Rated current: | 40 A |
| Rated residual current: | 0.03 A |
| Rated voltage: | 230 V |
| Frequency: | 50 Hz |
| Number of poles (total): | 2 |
| Width in pitch units: | 2 |
| Residual current type: | A |
| Installation depth: | 68 mm |
| Surge current strength: | 3 kA |
| Degree of protection (IP): | IP20 |
| Energy limitation class: | 3 |
| Overvoltage category: | 3 |
| Pollution degree: | 2 |
| Switching neutral conductor: | yes |
| Number of protected poles: | 1 |
| Type of voltage: | AC |
| False tripping protection: | no |
| Rated insulation voltage Ui: | 440 V |
| Rated impulse withstand voltage Uimp: | 4 kV |
| Rated breaking capacity according to EN 61009: | 10 kA |
| Rated short-circuit breaking capacity Icn according to EN 61009-1: | 10 kA |
| Shutdown characteristics: | short-time delayed |
| With locking device: | yes |
| Ambient temperature during operation: | -25 to 40 °C |
| Connectable conductor cross-section, single-wire: | 1 to 25 mm² |
| Connectable conductor cross-section, stranded: | 1 to 16 mm² |
