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IP 5201/40015

Undervoltage Relay, 3-phase

IP 5201/40015


Nominal voltage

Auxiliary voltage

Response value


  • 0059621
  • IP5201/40015 3/N AC110/63,5V DC110V
The undervoltage relay IP 5201/40015 monitors 3-phase AC power supplies, e. g. transformer... more

Product description

The undervoltage relay IP 5201/40015 monitors 3-phase AC power supplies, e. g. transformer stations at energy supply companies EVU. The early detection of an imminent mains failure means that is possible to switch over to an emergency power supply in good time. This prevents costly damage and as a user you benefit from the operational reliability and high availability of your sytem.

Technical specifications

Width: 70 mm
1- / 3-phase: 3
Nominal voltage max.: 3/N AC 110 / 63,5 V
Auxiliary voltage: DC
Output contacts: 2 C/O contacts
Enclosure design: Distribution board
Type: IP 5201/40015


  • The switching thresholds for untervoltage detection can be set independently of each other for all three phases.
  • Protective separation between 3-phase AC voltage and auxiliary voltage circuit


  • According IEC/EN 60255-1, IEC/EN 60947-5-1
  • For monitoring 3-phase AC voltages
  • Separately adjustable switching voltage for all 3 phases
  • With neutral
  • Output: 2 changeover contacts
  • De-energized on trip
  • Width: 70 mm