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The CMS460 system consists of one or several CMS460-D load current evaluators which are able to detect and evaluate load currents in earthed and unearthed power supplies via the associated measuring current transformers. The maximum voltage of the system to be monitored depends on the nominal insulation voltage of the measuring current transformer used in the case of busbar systems, or on the cables or conductors that are routed through.

CTAC… (closed), WR… (rectangular) and WS… (split-core) and WF… (flexible) measuring current transformers are used for alternating and pulsating currents. Any combination of the various measuring current transformer series can be connected to the evaluator measuring channels. Each CMS460-D utilises 12 measuring channels. Up to 90 load current evaluators can be connected via a BMS bus (RS-485 interface with BMS protocol), thereby up to 1080 measuring channels (sub-circuits) can be monitored.

If this product is to be used for fire or plant protection, the frequency response can be set accordingly. The measured currents can be analysed for harmonics.


  • Optional AC or pulsed DC sensitive measurements for each channel
  • r.m.s. value measurement
  • 12 measuring channels per individual device for load current
  • Up to 90 evaluators CMS460-D in the system (1080 measuring channels)
  • Fast parallel scanning for all channels
  • Response ranges 100 mA…125 A (42…2000 Hz)
  • Preset function
  • Adjustable time delays
  • Adjustable frequency behaviour (e.g. fire and plant protection)
  • History memory with date and time stamp for 300 data records/channel
  • Data logger for 300 data records/channel
  • Analysis of the harmonics, THD
  • Two alarm relays with one changeover contact each
  • N/O or N/C operation and fault memory selectable
  • Connection external test and reset button
  • Backlit graphical display (7-segment display) and alarm LEDs
  • Data exchange via BMS bus
  • Password protection for device setting
  • RoHS compliant


  • Monitoring of loads and installations for load currents in the frequency range of 42…2000 Hz (measuring current transformers CTAC…, WR…, WS…, WF…)
  • Monitoring of currents regarded as fire hazards in flammable atmospheres
  • EMC monitoring of TN systems for “stray currents” and additional N-PE connections
  • Monitoring of N conductors for overload caused by harmonics
  • Monitoring of PE and equipotentional bonding conductors to ensure they are free of current

Downloads for LINETRAXX® CMS460-D

CE Declarations of Conformity CMS4x0 82.9 KB 2022/08/12 06:17:2412.08.2022 06:17:24
Manuals CMS460-D4 1.3 MB EN2021/02/26 10:10:2026.02.2021 10:10:20D00166
Manuals CMS460-D 3.0 MB EN2019/05/13 10:31:4713.05.2019 10:31:47D00045
Quickstarts CMS460-D4 1.0 MB EN2021/02/26 10:11:2526.02.2021 10:11:25D00166
Datasheets CMS460-D 453.7 KB EN2019/05/13 10:31:3513.05.2019 10:31:35D00045
Datasheets CMS460-D4 365.6 KB EN2021/03/02 11:03:1002.03.2021 11:03:10D00166

Optional Accessories for LINETRAXX® CMS460-D

Power supply

TypeSupply voltage US*Art. No.
DI-1DL (interface repeater)AC 85…260 V, 50…60 HzB95012047

* Absolute values

Protocol converters

TypeDescriptionSupply voltage US*Art. No.
COM465IPCondition Monitor with integrated gateway: Bender system/EthernetAC/DC 24…240 V / DC, 50…60 HzB95061065
CP907-ICondition Monitor for the connection of Bender BMS devices and
universal measuring devices to TCP/IP networks
CP915-ICondition Monitor for the connection of Bender BMS devices and
universal measuring devices to TCP/IP networks

* Absolute values

Measuring current transformers

TypeInternal diameter/mmType of constructionArt. No.
CTAC20ø 20circularB98110005
CTAC35ø 35circularB98110007
CTAC60ø 60circularB98110017
CTAC120ø 120circularB98110019
CTAC210ø 210circularB98110020
WR70x175S70 x 175rectangularB11738
WR70x175SP70 x 175rectangularB11790
WR115x305S115 x 305rectangularB11739
WR115x305SP115 x 305rectangularB11791
WR150x350S150 x 350rectangularB911740
WR150x350SP150 x 350rectangularB911792
WR200x500S200 x 500rectangularB911763
WR200x500SP200 x 500rectangularB911793
WS20x3020 x 30split-coreB98080601
WS50x8050 x 80split-coreB98080603
WS80x12080 x 120split-coreB98080606

Flexible measuring current transformers (pulsed current sensitive)

TypeInside diameter/mmSupply voltage USArt. No.
WF170-1170DC 9,6…94 V/AC 42…460 Hz 16…72 VB78080201
WF170-2170DC 70…300 V/AC 42…460 Hz 70…300 VB78080202
WF250-1250DC 9,6…94 V/AC 42…460 Hz 16…72 VB78080203
WF250-2250DC 70…300 V/AC 42…460 Hz 70…300 VB78080204
WF500-1500DC 9,6…94 V/AC 42…460 Hz 16…72 VB78080205
WF500-2500DC 70…300 V/AC 42…460 Hz 70…300 VB78080206
WF800-1800DC 9,6…94 V/AC 42…460 Hz 16…72 VB78080207
WF800-2800DC 70…300 V/AC 42…460 Hz 70…300 VB78080208
WF1200-11200DC 9,6…94 V/AC 42…460 Hz 16…72 VB78080209
WF1200-21200DC 70…300 V/AC 42…460 Hz 70…300 VB78080210

LINETRAXX® CMS460-D Variants

TypeSupply voltage* USArt. No.
CMD460-D-1AC 16…72 V, 42…460 Hz/DC 16…94 VB94053017
CMD460-D-2AC 70…276 V, 42…460 Hz/DC 70…276 VB94053018

* Absolute values