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ISOSCAN® EDS440 Series

  • Automatic ground-fault location in ungrounded AC/DC systems
  • Locates ground faults while the system remains online
  • Compatible with industrial (iso685-D-P) and medical (LIM2010) applications
  • Up to twelve channels scanned in parallel, interconnect additional devices to add more
  • Uses current transformers, available in a wide range of sizes and shapes

When combined with Bender's ground-fault detectors and current transformers, EDS440 modules locate ground-faults in ungrounded AC and DC systems. Using a special measurement signal after a ground fault is detected, up to twelve separate channels are monitored in parallel to identify the corresponding branch or circuit. Multiple EDS modules may be interconnected to expand the quantity of branches scanned.

Fault location takes place automatically and while the system remains online, negating the need for opening branch circuit breakers or disconnecting equipment.

A complete, installed ground-fault location system requires a ground-fault detector (iso685-D-P for industrial applications, LIM2010 for medical applications) and a single current transformer per circuit or branch. Current transformers vary by application and are available in a wide range of sizes and shapes.


  • Used in combination with select Bender ground-fault detectors and line isolation monitors to create an automated ground fault location system in ungrounded AC/DC systems
  • Works on single-phase AC, three-phase AC, and DC systems
  • Compatible with systems with variable frequency drives and other power conversion equipment
  • Monitors up to twelve separate branches in parallel from each individual module
  • Uses low-frequency, low-current, line-to-ground tracer signal for fault location
  • Channels scanned in parallel
  • Uses current transformers available in a wide range of sizes and shapes


  • Automated ground-fault location in ungrounded AC/DC systems
  • General purpose electrical distribution networks
  • Motor control centers
  • Control systems
  • Isolated power systems in healthcare facilities

ISOSCAN® EDS440 Series Variant(s)

Part No.ApplicationCompatible DeviceConnection MethodOrdering No.
EDS440-S-1Industrial, general purposeiso685-D-PPCB snap-inB91080201
EDS440-L-1Industrial, general purposeiso685-D-PRS-485B91080202
EDS441-S-1Industrial, control systemsiso685-D-PPCB snap-inB91080204
EDS441-L-4Industrial, control systemsiso685-D-PRS-485B91080205
EDS441-LNA-4Medical power systemsLIM2010RS-485B91080208

Optional Accessories for ISOSCAN® EDS440 Series

Current transformers (EDS440 models only)

Part No.OpeningShape and TypeOrdering No.
W1-S321.35" (35 mm)circular, solidB911731
W2-S702.75" (70 mm)circular, solidB911732
W3-S1054.7" (105 mm)circular, solidB911733
W4-S1405.5" (140 mm)circular, solidB911734
W5-S2108.25" (210 mm)circular, solidB911735
WR70x175S2.75"x6.9" (70x175 mm)rectangular, solidB911738
WR115x305S4.5"x12" (115x305 mm)rectangular, solidB911739
WR150x350S5.9"x13.8" (150x350 mm)rectangular, solidB911740
WR200x500S7.9"x19.7" (200x500 mm)rectangular, solidB911763
WS20x300.75"x1.2" (20x30 mm)rectangular, split-coreB98080601
WS50x802"x3.1" (50x80 mm)rectangular, split-coreB98080603
WS80x1203.1"x4.7" (80x120 mm)rectangular, split-coreB98080606

Current transformers (EDS441 models only)

Part No.OpeningShape and TypeOrdering No.
W10-80000.4" (10 mm)circular, solidB911759
W20-80000.75" (20 mm)circular, solidB98080009
W35-80001.35" (35 mm)circular, solidB98080017
W60-80002.35" (60 mmcircular, solidB98080027
WS20x30-80000.75"x1.2" (20x30 mm)rectangular, split-coreB98080602
WS50x80-80002"x3.1" (50x80 mm)rectangular, split-coreB98080604

Downloads for ISOSCAN® EDS440 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 EDS44x 88.3 KB 2022/08/12 06:17:2512.08.2022 06:17:25
Quickstarts EDS440/EDS441 2.0 MB EN2019/05/13 10:31:5613.05.2019 10:31:56D00201
Manuals EDS440/EDS441 8.7 MB EN2022/06/09 10:48:2109.06.2022 10:48:21D00201
Datasheets EDS440/EDS441 1,012.3 KB EN2021/11/02 09:53:1502.11.2021 09:53:15D00201
Product Change Notifications EDS44x change of frontplate for new addressing concept 135.8 KB EN2019/05/13 10:31:5513.05.2019 10:31:55D00201
Manuals EDS440/EDS441 - Modbus settings 189.8 KB EN2020/01/14 07:37:4814.01.2020 07:37:48D00201
Flyers Industrial EDS 1.1 MB EN2021/04/28 13:38:1328.04.2021 13:38:13
Flyers Healthcare EDS 1.7 MB EN2021/04/29 15:23:1529.04.2021 15:23:15