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Extech CA3018: 3000A AC Flex Clamp-on Adaptor

18″ Flexible Clamp Adaptor for Multimeters/Clamp-On Meters

The CA3018 is a 3000A AC flex clamp-on adaptor for multimeters and clamp on meters with standard sized banana plugs. The CA3018 is an 18 inch flexible clamp capable of measuring AC Currents up to 3000A. Complete with built-in flex clamp cable, 6.6ft (2m) lead with banana plugs and two AAA batteries. UL listed with a CAT IV 600V safety rating.



  • Measure AC Current up to 3000A
  • Flexible 18″ (45.7cm) clamp jaw easily wraps around bus bars and cable bundles
  • 7.5mm cable diameter fits into tight spaces and around large conductors
  • Measures AC Current in three ranges
  • Easy twist clamp cable closure to Lock or Open
  • Compatible with most multimeters and clamp meters with standard sized banana plug inputs
  • Complete with built-in flex clamp cable, 6.6ft (2m) lead with banana plugs, and two AAA batteries


Specifications Range
Jaw size/Cable size 10″ (25.4cm) | 18″ (45.7cm)
AC Current 30.00A (100mV per Amp output); 300.0A (10mV per Amp output); 3000A (1mV per Amp output)
Max resolution 0.01A
Basic ACA Accuracy (% rdg) ±3%FS (45 to 500Hz)
Dimensions/ Weight 13.8×5.1×1″ (350x130x25mm)/ 7.1oz (200g)


  • 480172 – AC Line Splitter


CA3010 English Datasheet

CA3010 English User’s Manual

CA3018 CE Declaration of Conformity