We offer you first-class quality and safety combined with global service and every support in resolving your monitoring problems.

  • Electrical safety for unearthed power supplies (IT systems)
  • Insulation monitoring equipment, insulation fault location systems
  • Power supplies for medical applications
  • Measuring and monitoring relays
  • Electrical safety for earthed power supplies (TN systems)
  • Using renewable energies efficiently: wind power, photovoltaics
  • Test systems for electrical equipment and medical technology

LINETRAXX® CME420

The CME420 series current relays monitor undercurrent and overcurrent in AC systems as well as the current between two threshold values (window discriminator function). The currents are measured as r.m.s. values (AC). 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 delay times, installation-specific characteristics, such as device-specific making currents, short-time current changes etc. can be considered. Current measurement is possible either directly or indirectly via standard current transformers (x/5 A). External supply voltage is required.

LINETRAXX® CME420
LINETRAXX® CME420

The CME420 series current relays monitor undercurrent and overcurrent in AC systems as well as the current between two threshold values (window discriminator function). The currents are measured as r.m.s. values (AC). 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 delay times, installation-specific characteristics, such as device-specific making currents, short-time current changes etc. can be considered. Current measurement is possible either directly or indirectly via standard current transformers (x/5 A). External supply voltage is required.

Features

  • Undercurrent and overcurrent monitoring in AC systems 0.1…16 A
  • Indirect current monitoring with standard current transformers x/5 A
  • Transformation ratio n allows adaptation to all standard current transformers x/5 A
  • Different monitoring functions selectable < I, > I or < I/> I
  • Start-up delay, response delay, delay on release
  • Adjustable switching hysteresis
  • r.m.s. value measurement (AC)
  • Digital measured value display via multi-functional LC display
  • 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

  • Current consumption of motors, such as pumps, elevators, cranes
  • Monitoring of lighting circuits, heating circuits, charging stations
  • Monitoring of emergency lighting
  • Monitoring of screw conveyors, e.g. in sewage plants
  • Dust removal in wood working

LINETRAXX® CME420 Variant(s)

TypeSupply voltage US*MeasurementDisplay rangeResponse valueArt. No.**
CME420-D-1DC 9.6…94 V/
AC 16…72 V,
42…460 Hz
directly/
via current transformer x/5A
0.1…16 A/
5…999 A
0.1…16 A x nB73060001
B93060001
CME420-D-2DC 70…300 V/
AC 70…300 V,
42…460 Hz
directly/
via current transformer x/5A
0.1…16 A/
5…999 A
0.1…16 A x nB73060002
B93060002

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

Optional Accessories for LINETRAXX® CME420

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

Downloads for LINETRAXX® CME420

CategoryNameSizeLanguageTimestampD-/B-Number
Declarations of Conformity UKCA - CME42x 121.9 KB 2023/03/06 10:04:4306.03.2023 10:04:43
CE Declarations of conformity CME42x 89.0 KB 2023/02/13 06:27:1413.02.2023 06:27:14
Manuals CME420 1.8 MB DE2020/09/11 10:13:5311.09.2020 10:13:53D00034
Manuals CME420 1.5 MB EN2020/09/11 10:14:1211.09.2020 10:14:12D00034
Manuals CME420 613.4 KB FR2019/05/13 10:31:5413.05.2019 10:31:54D00034
Datasheets CME420 351.9 KB DE2019/05/13 10:31:3313.05.2019 10:31:33D00034
Datasheets CME420 301.5 KB EN2019/05/13 10:31:3513.05.2019 10:31:35D00034
Datasheets CME420 330.6 KB ES2019/05/13 10:31:3713.05.2019 10:31:37D00034
Datasheets XM420-Schnittstellenoptionen 264.1 KB DE2019/05/13 10:31:3513.05.2019 10:31:35
Datasheets XM420 interface options 223.5 KB EN2019/05/13 10:31:3613.05.2019 10:31:36D00051
Datasheets CME420 286.0 KB FR2019/05/13 10:31:3213.05.2019 10:31:32D00034
Technical information Changed variants of relays from goldplated to silver-plated contacts 166.3 KB EN2022/06/27 09:03:0827.06.2022 09:03:08
Technical information Geänderte Relaisvarianten von vergoldeten Kontakten auf versilberte Kontakte 166.3 KB DE2022/06/27 09:03:0827.06.2022 09:03:08