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The highly sensitive CTAC series measuring current transformers in combination with RCM or RCMS series residual current monitors and evaluators convert AC currents into an evaluable measurement signal.

They are also suitable for use in insulation fault location systems for IT systems (EDS). The current transformers measure the locating current generated by a PGH locating current injector or an ISOMETER® IRDH. In combination with EDS series insulation fault locators, the locating current is converted into an evaluable measurement signal.

The connection to the respective devices is made via a two-wire cable.


Measuring current transformers CTAC…

  • For RCMS460/490 residual current monitoring systems
  • For RCM420 residual current monitors
  • For EDS440 and EDS460/490 insulation fault locators in AC and DC systems

Measuring current transformers CTAC…/01

  • For EDS441 and EDS461/EDS491 insulation fault locators


Measuring current transformers CTAC…

  • Connection to the respective residual current monitoring system RCMS, residual current monitors RCM or to insulation fault location systems EDS

Measuring current transformers CTAC…/01

  • Connection to the respective EDS441, EDS461 und EDS491 and insulation fault locator

LINETRAXX® CTAC Series Variant(s)

TypeMountingInside diameterArt. No.
CTAC20Mounting brackets, DIN rail20 mmB98110005
CTAC20/011)Mounting brackets, DIN rail20 mmB98110006
CTAC35Mounting brackets, DIN rail35 mmB98110007
CTAC35/011)Mounting brackets, DIN rail35 mmB98110008
CTAC60Mounting brackets, DIN rail60 mmB98110017
CTAC120Mounting brackets120 mmB98110019
CTAC210Mounting brackets210 mmB98110020

1) For EDS441 and EDS461/491 insulation fault locators

Optional Accessories for LINETRAXX® CTAC Series

Type designationArt. No.
Snap-on mounting for CTAC20 and CTAC20/01B91080111
Snap-on mounting for CTAC35 and CTAC35/01B91080112

(included in scope of delivery)

Downloads for LINETRAXX® CTAC Series

Certificates TÜV NORD - AGH150x, CTACx, CTBCx, EDS44x, CTUB10x, MRCDB30x und RCMB30x 437.3 KB DE2023/01/12 14:43:4612.01.2023 14:43:46
Certificates TÜV NORD - AGH150x, CTACx, CTBCx, EDS44x, CTUB10x, MRCDB30x and RCMB30x 417.2 KB EN2023/01/12 14:43:5312.01.2023 14:43:53
CE Declarations of Conformity CTAC 87.4 KB 2022/08/12 06:17:2412.08.2022 06:17:24
Manuals CTAC series 1.2 MB EN2023/02/02 05:51:4302.02.2023 05:51:43D00386
Datasheets CTAC series 534.9 KB EN2021/09/20 07:54:3720.09.2021 07:54:37D00386