Amprobe AC40C 400 A Mini-Clamp Digital Multimeter

  • Mini-clamp digital multimeter
  • 400 A range
  • 10 mA resolution
  • 600 V AC and DC range
  • 4000-count display
  • Autoranging
  • Data hold
  • Auto-off
  • NCV function (non-contact voltage detection)


The Amprobe AC40C digital multimeter won’t take much space in your tool kit and offers quick and accurate measurements.


AC Voltage 400.0 V, 600 V
DC Voltage 400.0 V, 600 V
AC Current 40.00 A, 400.0 A
DC Current
Resistance 400 O
Accommodates conductors up to 1.0 (25 mm) in diameter
Display 3-3/4 digit LCD (max reading 3999)
Overrange indication OL indicated
Low battery indication Battery symbol appears when battery power is low
Power supply Two (2) 1.5 V AA batteries
Maximum jaw opening 25.4 mm (1.0 in)


What’s Included

  • AC40C
  • Carrying case
  • Batteries (installed)
  • Test leads


Datasheet »

10 reviews for Amprobe AC40C 400 A Mini-Clamp Digital Multimeter

  1. Rich

    A compact multimeter with full size features.

    The 400A Mini-Clamp Digital Multimeter has the right features to perform the typical daily tasks when servicing light commercial and resedential electrical commodities. Trouble shooting and servicing become the simplist part of a job with the Amprobe AC40C.

    ✔ Yes, I recommend this product.

  2. rt207

    Nice that it allows excess to tight or close places.

    Though, I use that regular size amp-clamp meters. This mini-clamp insturment comes in very handlely in areas where the boxes, troughs, panels, load centers may have a bundle of conductors that a standard or normal size device may have difficulty having access to.
    With this smaller amp-clamp you are able to take hold of the conductor you are attemping to get a read on and be able to get the clamp open and shut without distrubing the other conductors. It is a very useful tool.

    ✔ Yes, I recommend this product.

  3. btaylor

    great basic meter

    great just amp meter ease of use great addition to my tool bag

    ✔ Yes, I recommend this product.

  4. GUS420

    Easy to use

    This clamp on meter is great for putting in a small tool bag. I am in the HVAC business and this meter is all I need to carry. I can check power and also take amp readings. A++

    ✔ Yes, I recommend this product.

  5. BobB

    Great amp probe! Easy one hand use!

    We do a lot of troble shooting of A/C circuits and this tool is a great addition to the tool box!!

    ✔ Yes, I recommend this product.

  6. Clay

    Reliable and trustworthy!

    This meter is user friendly, accurate and reliable…. Clamps around wires which provides accurate readings and gives the user ease at reading.

    ✔ Yes, I recommend this product.

  7. Rick

    Excellent reliable test tool is always in my toolbox.

    None better. Compact & durable (yes, it has been dropped several times) one hand operation, takes up very little space in my tool box. Very accurate and relilable. Long battery life.
    I only wish I bought the swivel model.

    ✔ Yes, I recommend this product.

  8. Rene

    Reliable tool

    This is a reliable, small and economical tool. I relly recommend.
    I bought one around 5 years ago and never need maintenance.
    Always is ready to work.
    Have excellent relation price / valor.

    ✔ Yes, I recommend this product.

  9. Goldburg

    always dependable

    having owned Amprobe products for over 30 years, i can say that dependability and accuracy are superb. only issue i have had with them is self inflicted. As in- dropping from a boom lift, run over by trucks cuz they were left out. these scenarios are always good for a new meter in the tool box! Otherwise, i am sure i would still own my 30 year old analog meter. great stuff!

    ✔ Yes, I recommend this product.

  10. RickH

    Great Product

    very easy to use, compact size for easy storage, accurate and reliable!
    Highly recomended

    ✔ Yes, I recommend this product.

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