Doepke DFS4 100-4 / 0.30-B SK S V500, AC-DC sensitive RCD se 09,166,982

Residual current circuit breakers (RCCBs) are components for implementing the protective measure 'protection by automatic shutdown of the power supply' in accordance with the requirements of VDE 0100 Part 410 or corresponding international installation regulations. Devices in the DFS 4 series are compact two- or four-pole residual current circuit breakers. In the standard version, they only take up four division units. While the DFS 4 version for alternating and pulsating direct residual currents is designed for three-phase networks, but can also be used in single-phase networks, there are special versions for single- or three-phase operation in the universal current sensitive versions (type B, type B+). Despite the compact dimensions, a large number of different tripping currents and characteristics are available for rated currents - depending on the version - up to 125 A. All devices are available in the 'HD' version, which is particularly suitable for use in harsh environments (tunnels, swimming pools, etc.). They also have large double-deck terminals for accommodating large conductor cross-sections, a practical multi-function switch toggle and can be labeled with pre-made labels using free software. DFS 2 and DFS 4 with residual current characteristic B detect smooth DC residual currents as well as all other residual currents of type B in accordance with IEC 60755. The operating voltage required for this is taken from the mains voltage. Correct voltage supply is guaranteed if the voltage between the mains conductors is ? 50 V. Type A residual currents are detected regardless of the mains voltage. Furthermore, these residual current circuit breakers detect residual currents of all frequencies up to 100 kHz without gaps. With this large frequency range of residual current detection, they significantly exceed the requirements of the construction standards for type B residual current circuit breakers. Fault protection in accordance with VDE 0100 Part 410 is provided over the entire frequency range of residual current detection with an appropriate earth resistance. The maximum permissible earthing resistance is calculated as the quotient of the permissible contact voltage and the highest tripping fault current in the entire recorded frequency range. In residual current circuit breakers with the SK characteristic curve, the frequency response of the tripping current is designed so that fault currents with high frequencies, e.g. in the range of the clock frequencies of AC and frequency converters, are detected with significantly reduced sensitivity compared to the rated frequency. This largely prevents unwanted tripping due to leakage currents. However, depending on the rated fault current of the switch (0.03 A, 0.1 A or 0.3 A), fire protection is only provided for fault currents with frequencies up to 1000 Hz, 300 Hz or 100 Hz, while devices with the tripping frequency response B+ or NK offer this protection level over the entire tripping frequency range up to 20 kHz or 100 kHz.Selective residual current circuit breakers require a longer flow time of the fault current to trip than instantaneous circuit breakers. This enables selective shutdown in systems with staggered distributions, i.e. with RCCBs connected in series, in the event of a fault only the RCCB in whose immediately downstream system section the earth fault occurs will trip. Due to their long shutdown times and high rated residual currents, selective residual current circuit breakers only provide fire protection and fault protection (protection against indirect contact). Additional protection (protection against direct contact, personal protection) is therefore not possible. Devices of version V are designed for special voltages. Properties: - selective to all instantaneous RCCBs (type AC, A or B) for fault currents of all frequencies in the detection range as well as for fault currents of type B, - for systems with high leakage currents in the frequency range > 1 kHz, - high insensitivity to trans
Type: DFS4 100-4/0,30-B SK S V500