LINETRAXX® VME420

  • Multi-functional monitoring relay for overvoltage, undervoltage, overfrequency, and underfrequency
  • Works on single-phase AC and DC systems up to 300 V
  • Digital display with real-time reading
  • Multiple time delays available (on startup, on trigger, on reset)
  • Two Form-C (SPDT) alarm contacts, configurable to trigger on any combination of alarms

The VME420 series voltage relays are designed to monitor the frequency, undervoltage, overvoltage and the voltage between two threshold values in AC and DC systems. The voltages are measured as r.m.s. values. The currently measured value is continuously shown on the LC display. The measured value required to trigger the alarm relay is stored. Due to adjustable response times, installation-specific characteristics, such as device-specific start-up procedures, short-time voltage fluctuations, etc. can be considered. The relays require an external supply voltage.

Questions? Contact us!

LINETRAXX® VME420
LINETRAXX® VME420
  • Multi-functional monitoring relay for overvoltage, undervoltage, overfrequency, and underfrequency
  • Works on single-phase AC and DC systems up to 300 V
  • Digital display with real-time reading
  • Multiple time delays available (on startup, on trigger, on reset)
  • Two Form-C (SPDT) alarm contacts, configurable to trigger on any combination of alarms

The VME420 series voltage relays are designed to monitor the frequency, undervoltage, overvoltage and the voltage between two threshold values in AC and DC systems. The voltages are measured as r.m.s. values. The currently measured value is continuously shown on the LC display. The measured value required to trigger the alarm relay is stored. Due to adjustable response times, installation-specific characteristics, such as device-specific start-up procedures, short-time voltage fluctuations, etc. can be considered. The relays require an external supply voltage.

Questions? Contact us!

Features

  • Monitoring AC/DC systems for undervoltage, overvoltage and frequency in the voltage range of 0…300 V
  • Various monitoring functions selectable < U, > U, < f, > f
  • Start-up delay, response delay and delay on release
  • Adjustable switching hysteresis
  • r.m.s. value measurement (AC+DC)
  • Digital measured value display via multi-functional LC display
  • Preset function (automatic setting of basic parameters)
  • LEDs: Power On, Alarm 1, Alarm 2
  • Measured value memory for operating value
  • Continuous self monitoring
  • Internal test/reset button
  • Two separate alarm relays (one changeover contact each)
  • N/C or N/O operation and fault memory behaviour selectable
  • Password protection for device setting
  • Sealable transparent cover
  • Two-module enclosure (36 mm)
  • Push-wire terminal (two terminals per connection)
  • RoHS compliant

Applications

  • Single-phase voltage and frequency monitoring of machines and electrical installations
  • Earth fault monitoring in medium-voltage systems via voltage transformers
  • Monitoring of battery systems
  • Switching on and switching off at a certain voltage level

LINETRAXX® VME420 Variant(s)

TypeSupply voltage US*Nominal system voltage Un*Art. No.**
VME420-D-1DC 9,6 V…94 V / AC 16…72 V, 15…460 HzAC/DC 0…300 V / 15…460 HzB73010001
B93010001
VME420-D-2DC 70…300 V / AC 70…300 V, 15…460 HzAC/DC 0…300 V / 15…460 HzB73010002
B93010002

* absolute values
**(B7… = push-wire terminal / B9… = screw-type terminal)

Optional Accessories for LINETRAXX® VME420

TypeArt. No.
Mounting clip for screw mounting (one piece per device)B98060008
Mounting frame XM420B990994 

Downloads for LINETRAXX® VME420

NameCategorySizeLanguageTimestampD-/B-Number
TÜV NORD - isoHV42x, AGH42x, isoHV52x, isoRW42x und VMx420 Certificates 431.9 KB DE2023/01/1212.01.2023
TÜV NORD - isoHV42x, AGH42x, isoHV52x, isoRW42x and VMx420 Certificates 411.7 KB EN2023/01/1212.01.2023
UKCA - VMx42x Declarations of Conformity 141.7 KB 2022/12/2020.12.2022
VMx42x CE Declarations of Conformity 93.7 KB 2022/11/0404.11.2022
VME420 Manuals 1.8 MB EN2021/09/2222.09.2021D00026
VME420 Datasheets 363.8 KB EN2022/08/1010.08.2022D00026
VME420 Quickstarts 810.2 KB EN2024/05/2323.05.2024D00026
XM420 interface options Datasheets 223.5 KB EN2019/05/1313.05.2019D00051
Changed variants of relays from goldplated to silver-plated contacts Technical Information 166.3 KB EN2022/06/2727.06.2022