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200A max clip-on current sensor CT

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  • IotaWatt CT comparison
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£14.39 (inc VAT) £11.99 (exc VAT)
150.00 Grams

Non-invasive clip-on CT current sensor (for AC current only) 

Compatible with emonTx* and emonPi*

* Note: for use with emonTx / emonPi requires modification of emonhub.conf to set 3x scale e.g see config screenshot showing scale modification with SCT019 (200A) connected to emonPi Power 2 CT input:





  • Model: SCT-019-000
  • Maximum Current (Saturation): 200A 
  • Open Size: 19mm x 19mm
  • Output Type: Current 
  • Connection Plug: 3.5mm Jack
  • Length of Cable: 1000mm
  • Certification: RoHS, CE


Comparison Table

Opening diameter(mm) 6mm x 6mm 13mm x 13mm 19mm x 19mm
Work frequency 50Hz-1kHz 50Hz-150kHz 50Hz-1KHz
Outline size (mm) A/B/C 16.5X19X29 32X22X57 29.5X30.8X46
Rated input current 0-20A 5A-100A 5A-200A
Linearity ±2% ±3% ±1%
Output type Current
Output current 37.5mA 50mA 33mA
Dielectric strength (AC/1min)
1000V 1000V 3000V
Protection diode  Yes Yes Yes
Mounting mode
Suspension type
Suspension type
Suspension type
Material of iron core Ferrite Ferrite Ferrite
Weight 15g 78g 70g




Learn - AC power theory and CT sensor interfacing 

CT Installation Instructions

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