The FI block (RCU) is for customer-side installation with automatic circuit breakers from the S200 series. The resulting FI/LS combinations (RCBOs) offer personal and material protection as well as protection against electrically ignited fires in accordance with DIN0100-410 and DIN0100-530. They guarantee protection of 1P+N, 2P, 3P, 3P+N or 4P circuits against overload and short-circuit currents, protection against sinusoidal alternating currents and pulsating currents with a smooth DC residual current component of up to 6 mA against earth. As well as fault protection (protection against indirect contact), additional protection (with I n 30 mA) and fire protection (with I n 300 mA). They comply with the product standard IEC/EN 61009 Appendix G. Areas of application are household, commercial and industrial applications. The extensive range of accessories offers you everything you need for your installation tasks. The rated switching capacity when installing MCB S200: 6 kA, S200 M: 10 kA, S200 P: 25 kA.
| Property | Value |
| Nominal voltage: | 230 to 400 V |
| Delay time adjustable: | no |
| Rated residual current adjustable: | no |
| Nominal current: | 40 A |
| Residual current type: | A |
| Number of poles: | 3 |
| Rated residual current: | 0.5 A |
| Frequency: | 50/60 Hz |
| Rated insulation voltage Ui: | 500 V |
| Rated impulse withstand voltage Uimp: | 4 kV |
| Connectable conductor cross-section, single-wire: | 16 mm² |
| Connectable conductor cross-section, stranded: | 16 mm² |
| False tripping protection: | no |
| With locking device: | yes |
| Protection class (IP): | IP2X |
| Ambient temperature during operation: | -25 to 55 °C |
