E. Dold & Söhne GmbH & Co. KG

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E-Mail: dold-relays@dold.com

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AA 9943

Undervoltage Relay

AA 9943

Contacts

Nominal voltage

Variant

  • 0005678
  • 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