MRCDB423-D-2 MRCD TYP B, 230 VAC
Product description
The all-current sensitive MRCDB423 with the associated CTUB101-CTBC... measuring current transformers are used as additional protection (protection against indirect contact) in earthed systems (TN and TT systems) in which DC residual currents or AC residual currents can occur. These systems include, in particular, loads with six-pulse bridge rectifiers or half-wave rectification with smoothing, e.g. converters, chargers, construction machinery with frequency-controlled drives.
Functions and features:
- All-current sensitive MRCD type B according to DIN EN 60947-2 Annex M
- Use as a modular residual current device
- For additional protection in earthed systems
- Type B response characteristic in accordance with IEC 60755
- RMS value measurement of the residual current
- Display of alarm and pre-warning via LEDs
- Alarm and pre-warning output via relay (K1/K2)
- Control of a switching element with isolating properties via relay K2
- Connection monitoring measuring current transformer
- Fault memory
Technical features:
- Response range IΔn: 30 mA...3 A
- Rated frequency: 0...2000 Hz
- Supply voltage Us: DC 70...300 V / AC 42...460 Hz, 70...300 V
Application:
Additional protection (protection against indirect contact) in earthed systems (TN and TT systems)
