• Siemens SENTRON SEM3 Multichannel Current Measuring System
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Siemens SENTRON SEM3 Multichannel Current Measuring System

Siemens SENTRON SEM3 Multichannel Current Measuring System

The SEM3 multichannel current measuring system combines a data manager, plug-in metering modules on meter racks and current transformers for submetering many circuits.

Key features

  • Data manager with Modbus TCP and RS485 Modbus RTU, screw mounting
  • Metering modules with 0.2% or 1% accuracy including the current transformer, phase set by slide switch
  • Meter racks for 3, 9, 15 or 21 metering modules with 600 V insulated connecting cables
  • Standard CTs 50-1200 A and folding CTs 50-2000 A, 100 mA output, 1.82 m cable extendable to 100 m
  • Max. input voltage 480/277 V AC 50/60 Hz

Specifications

Brand line SENTRON
System SEM3
Max. input voltage 480 V/277 V AC
CT output signal 100 mA
Transformer configuration In the data manager
Source Siemens Catalog LV 10 · 2026, p. 840-841
US2:SEM3CONTROLLER Component: Data manager | Details: Modbus TCP + RS485 Modbus RTU, 3-phase
US2:SEM3PHAMETER Component: Metering module | Details: Accuracy 0.2%
US2:SEM3PLAMETER Component: Metering module | Details: Accuracy 1%
US2:SEM3RACK3 Component: Meter rack | Details: For 3 metering modules
US2:SEM3RACK9 Component: Meter rack | Details: For 9 metering modules
US2:SEM3RACK15 Component: Meter rack | Details: For 15 metering modules
US2:SEM3RACK21 Component: Meter rack | Details: For 21 metering modules
US2:SEM3CAB12INCH Component: Connecting cable | Details: 0.3 m, 600 V insulated
US2:SEM3CAB24INCH Component: Connecting cable | Details: 0.6 m, 600 V insulated
US2:SEM3CAB36INCH Component: Connecting cable | Details: 0.9 m, 600 V insulated
US2:SEM3SCCT50 Component: Standard current transformer | Details: 50 : 0.1 A, 100 mA output
US2:SEM3SCCT125 Component: Standard current transformer | Details: 125 : 0.1 A, 100 mA output
US2:SEM3SCCT250 Component: Standard current transformer | Details: 250 : 0.1 A, 100 mA output
US2:SEM3SCCT400 Component: Standard current transformer | Details: 400 : 0.1 A, 100 mA output
US2:SEM3SCCT600 Component: Standard current transformer | Details: 600 : 0.1 A, 100 mA output
US2:SEM3SCCT800 Component: Standard current transformer | Details: 800 : 0.1 A, 100 mA output
US2:SEM3SCCT1200 Component: Standard current transformer | Details: 1200 : 0.1 A, 100 mA output
7KT1280-5MA00 Component: Folding transformer | Details: 50 : 0.1 A, 100 mA output
7KT1280-5MA01 Component: Folding transformer | Details: 125 : 0.1 A, 100 mA output
7KT1280-5MA02 Component: Folding transformer | Details: 250 : 0.1 A, 100 mA output
7KT1280-5MA03 Component: Folding transformer | Details: 400 : 0.1 A, 100 mA output
7KT1280-5MA04 Component: Folding transformer | Details: 600 : 0.1 A, 100 mA output
7KT1280-5MA05 Component: Folding transformer | Details: 800 : 0.1 A, 100 mA output
7KT1280-5MA06 Component: Folding transformer | Details: 1200 : 0.1 A, 100 mA output
7KT1280-5MA07 Component: Folding transformer | Details: 1600 : 0.1 A, 100 mA output
7KT1280-5MA08 Component: Folding transformer | Details: 2000 : 0.1 A, 100 mA output
US2:SEM3DINKIT Component: DIN-rail adapter kit | Details: 5 adapters (data manager + racks)
Power MetersSiemens
27 product codes available in this family
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Siemens SENTRON SEM3 Multichannel Current Measuring System

Brand Siemens·Power Meters

Available part numbers (27)

US2:SEM3CONTROLLER, US2:SEM3PHAMETER, US2:SEM3PLAMETER, US2:SEM3RACK3, US2:SEM3RACK9, US2:SEM3RACK15, US2:SEM3RACK21, US2:SEM3CAB12INCH, US2:SEM3CAB24INCH, US2:SEM3CAB36INCH + 17 more — see full table ↓

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Product codes & specifications
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Product codeSpec
US2:SEM3CONTROLLERComponent: Data manager | Details: Modbus TCP + RS485 Modbus RTU, 3-phase
US2:SEM3PHAMETERComponent: Metering module | Details: Accuracy 0.2%
US2:SEM3PLAMETERComponent: Metering module | Details: Accuracy 1%
US2:SEM3RACK3Component: Meter rack | Details: For 3 metering modules
US2:SEM3RACK9Component: Meter rack | Details: For 9 metering modules
US2:SEM3RACK15Component: Meter rack | Details: For 15 metering modules
US2:SEM3RACK21Component: Meter rack | Details: For 21 metering modules
US2:SEM3CAB12INCHComponent: Connecting cable | Details: 0.3 m, 600 V insulated
US2:SEM3CAB24INCHComponent: Connecting cable | Details: 0.6 m, 600 V insulated
US2:SEM3CAB36INCHComponent: Connecting cable | Details: 0.9 m, 600 V insulated
US2:SEM3SCCT50Component: Standard current transformer | Details: 50 : 0.1 A, 100 mA output
US2:SEM3SCCT125Component: Standard current transformer | Details: 125 : 0.1 A, 100 mA output
US2:SEM3SCCT250Component: Standard current transformer | Details: 250 : 0.1 A, 100 mA output
US2:SEM3SCCT400Component: Standard current transformer | Details: 400 : 0.1 A, 100 mA output
US2:SEM3SCCT600Component: Standard current transformer | Details: 600 : 0.1 A, 100 mA output
US2:SEM3SCCT800Component: Standard current transformer | Details: 800 : 0.1 A, 100 mA output
US2:SEM3SCCT1200Component: Standard current transformer | Details: 1200 : 0.1 A, 100 mA output
7KT1280-5MA00Component: Folding transformer | Details: 50 : 0.1 A, 100 mA output
7KT1280-5MA01Component: Folding transformer | Details: 125 : 0.1 A, 100 mA output
7KT1280-5MA02Component: Folding transformer | Details: 250 : 0.1 A, 100 mA output
7KT1280-5MA03Component: Folding transformer | Details: 400 : 0.1 A, 100 mA output
7KT1280-5MA04Component: Folding transformer | Details: 600 : 0.1 A, 100 mA output
7KT1280-5MA05Component: Folding transformer | Details: 800 : 0.1 A, 100 mA output
7KT1280-5MA06Component: Folding transformer | Details: 1200 : 0.1 A, 100 mA output
7KT1280-5MA07Component: Folding transformer | Details: 1600 : 0.1 A, 100 mA output
7KT1280-5MA08Component: Folding transformer | Details: 2000 : 0.1 A, 100 mA output
US2:SEM3DINKITComponent: DIN-rail adapter kit | Details: 5 adapters (data manager + racks)

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