The S750DR in 80 and 100A are selective main circuit breakers (SH switches) VDE certified according to IEC / EN 60947-2 and are used as group or back-up fuses instead of NH fuses or other overcurrent protection devices in main distribution boards or switchgear. They offer complete selectivity for upstream and downstream protective devices due to the unique energy limitation in the event of a fault.
The S750DR does not need a neutral conductor connection, they are voltage-independent. No auxiliary power is required for switching on or off or for the protective function. The design ensures that the protective function is reliably fulfilled, regardless of network disturbances or network type.
The S750DR is designed for DIN rail mounting. The 3-pole devices can be placed on a 40mm busbar system using the S750DR-QA busbar adapter.
Application: commercial buildings, industry, safety-relevant areas and to ensure high system availability. For example, in buildings for gatherings of people (DIN VDE 0100-718) and in medically used areas (DIN VDE 0100-710).