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| Item number:
2794E-1812795 Manufacturer no.:
RK9871.71 3/N AC400/230V 50/60Hz EAN/GTIN:
n/a |
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| Detection of undervoltage in 3-phase systems Without separately auxiliary voltage (internal supply from all 3 phases) LED indication for operation voltage and contact position De-energised on trip RK 9871.71: 1 changeover contact RK 9871.72: 2 changeover contacts With fixed time delay of 0.5s for fault indication With fixed time delay of 1min for reset With fixed response value at AC 195.5V As option with test-button for function control Width 17,5 mm Advantages / Customer benefit Higher safety in buildings Application Monitoring of undervoltage in 3 phase voltage systems and switch over to emergency supply More information: | | Monitoring Application: | Voltage | Electrical Phase: | 3 | Contact Configuration: | SPDT | Voltage Sensitivity: | Undervoltage | Mounting Type: | DIN Rail | Frequency Sensing Range: | 45 → 65Hz | Series: | RK9871 | Dimensions: | 66 x 17.5 x 90mm | Height: | 90mm | Length: | 66mm | Maximum Frequency Sensed: | 65Hz | Maximum Operating Temperature: | +55°C | Minimum Frequency Sensed: | 45Hz | Minimum Operating Temperature: | -25°C | Operating Temperature Range: | +55°C |
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