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Undervoltage Relay
AA 9943
- Article number: 0005678
- Variant: AA9943.11 3AC50-400HZ 240/415V
The undervoltage relays BA 9043 and AA 9973 of the VARIMETER series monitor 3-phase AC networks.... more
Product description
The undervoltage relays BA 9043 and AA 9973 of the VARIMETER series monitor 3-phase AC networks. The measurement is very simple and without extensive wiring as there is no auxiliary power supply necessary. The adjustment of the setting values is user friendly and done on 2 rotary switches on the front of the device.
Technical specifications
| Width: | 45 mm |
| Operate delay: | Yes |
| 1- / 3-phase: | 3 |
| Nominal voltage max.: | 3/N AC 500/290 V |
| Auxiliary voltage: | Without |
| Output contacts: | 1 C/O contact, 2 C/O contacts |
| Enclosure design: | Switch cabinet |
| Type: | AA 9943 |
Features
- According to EC/EN 60255-1
- 3-phase
- For nominal voltage of 3 AC 100 / 57 to 690 / 400 V
- Measures arithmetic mean value
- Adjustable operate and release value
- For 3p3w or 3p4w systems
- BA 9043 with optionally adjustable time delay
- De-energized on trip operation
- LED indicator for operation and state of contact
- Insensitive to harmonics
- Frequency up to 400 Hz
- Width 45 mm