The FI block (RCU) is for customer-side assembly 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 smooth DC residual current of up to 6 mA to earth, fault protection (protection against indirect contact) and fire protection (with I n 300 mA). They comply with the product standard IEC/EN 61009 Appendix G. Areas of application are commercial and industrial applications. The extensive range of accessories offers you everything you need for your installation tasks. Optimum compromise between safety and operational continuity thanks to the immunity to unwanted tripping with surge current resistance (surge current form 8/20 s) = 5000 A. Selectivity with downstream devices with a smaller rated residual current of e.g. 30 mA (see selectivity tables in the catalog, chapter Technology). The rated switching capacity when installing MCB is S200: 6 kA, S200 M: 10 kA, S200 P: 25 kA.
