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ATO/SP3 IoT Series

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Bosch XDK110 compatible (not supplied)

Links to Bosch distributors:



Split-core current transformer with high accuracy and low phase shift



Main characteristics:

  • Measurement of AC primary currents from 0 to 10A
  • Voltage output (ratio 225mV @ IPr)
  • Class accuracy 1 (voltage output) according to IEC 61869 standard
  • Compact
  • Self-powered
  • 10 mm diameter aperture
  • Frequency: 50/60 Hz




  • Split-core type
  • Easy mounting
  • Cable output: 1m
  • Operating range: -10°C to +55°C
  • Dimensions (ATO): 45.5 x 33.5 x 32 mm with a 10 mm sensing aperture
  • Rated insulation voltage 600V CATIII PD2, basic insulation



Standard compliance:

  • The products are CE certified EMC 2014/30/EU regarding their safety according to the European directive 2014/35/EU and tested according to the standards IEC 61010-1.
  • UL 508 (UR marking)
  • IEC 61869 for Instrument transformers performances




  • Fast clip-on mounting whilst cable is connected
  • Principal applications are in the field of energy consumption sub-metering and analysis, branch current monitoring, defective equipment detection and power quality control
  • Slot expected to fix the ATO on conductor with a cable tie
  • DIN rail adaptor (optional)


Product search results
Model Expand Primary
Voltage (V)
Accuracy (%) Mounting
ATO-10-B225-D10/SP3 expand 10 A 14.14 A 0.225 V 0-0 Bi 1 On primary fastening
  Technology: Current Transformer