FI/LS combinations (RCBOs) offer property protection as well as protection against electrically ignited fires. They guarantee protection of 2P or 4P circuits against overload and short-circuit currents, protection against sinusoidal alternating currents and pulsating currents with smooth direct 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 60947-2. Areas of application are 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 interference immunity against accidental 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, Technology chapter). Rated switching capacity Icu = 50 kA according to IEC/EN 60947-2 for MCBs (LS) in industrial applications.
