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Martindale CM57 True RMS AC Clamp Meter

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  • Measures AC voltage from 0 to 600A with true RMS accuracy
  • Also measures AC/DC voltage, resistance, frequency, and capacitance
  • Non-contact voltage detection allows user to check for live conductors

rrp £99.00

now £69.00 (Ex. VAT) £82.80 (Inc. VAT)

rrp £99.00

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  • Description

    Martindale CM57 True RMS AC Clamp Meter

    The Martindale CM57 True RMS AC Clamp Meter measures AC current from 0 to 600A with a resolution of 0.01A and accuracy of ±1.9% via its 25mm jaw clamp. Additionally, it is also capable of measuring AC/DC voltage from 0 to 600V, resistance from 0 to 6MΩ, frequency from 0 to 100kHz and capacitance from 0 to 600µF as well as performing continuity and diode testing.

    Readings are shown on the Martindale CM57’s backlit digital display and the meter features a data hold function that can freeze the reading on screen. The function is selected using the simple dial and it is even possible to use the meter’s non-contact voltage indicator to check for live conductors before starting work.

    The Martindale CM57 comes supplied with a carry case, batteries, instructions and a set of TL16 test leads. The clamp meter is safety rated as Cat III 600V and is designed to be ergonomic and robust.

    Martindale part number: MARCM57

    Key Features

    • True RMS AC current range: 0 to 600A
    • AC/DC voltage range: 0 to 600V
    • Resistance range: 6MΩ
    • Frequency range: 0 to 100kHz
    • Capacitance range: 0 to 600µF
    • Continuity & diode test
    • Non-contact voltage detection
    • Cat III 600V rating
  • Specification

    AC Amps

    • 60.00A / 600.0A
    • Accuracy: ± 1.9% ± 5dgt

    AC Volts

    • 6.000V / 60.00V / 600V
    • Accuracy: ±1.2% ± 5dgt

    DC Volts

    • 6.000V / 60.00V / 600V
    • Accuracy: ±1% ± 3dgt


    • 600.0.0Ω to 6.000MΩ
    • Accuracy: ± 1.2% ± 3dgt
    • Continuity: buzzer ≤ 30Ω


    • 6.000nF to 600.0µF
    • Accuracy: ±3% ± 10dgt


    • 6.000kHz / 10.00kHz (A), 6.000kHz to 100.0kHz (V)
    • Accuracy: ±1.2% ± 3dgt

    Max Conductor

    • 25mm Ø

    General Specifications

    • Operating environment: 0°C to 40°C, <80% RH
    • Safety CAT III 600V
    • Power: 2 x 1.5V AAA
    • Weight: 270g approx.
    • Dimensions: 203 x 75 x 32mm
    • Includes: leads (TL16), soft carry case, batteries and manual
  • Supplied Accessories

    • Martindale CM57 True RMS AC Clamp Meter
    • Instruction manual for Martindale CM57
    • Martindale TL16 Test Leads
    • Soft Carry Case
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  • Delivery Information

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    We use DPD/Interlink for all larger items and Royal Mail for smaller items and accessories. With DPD/Interlink you will receive a 1 hour delivery window on the day of delivery via e-mail/text and a notification 15 minutes before arrival so you will not have to wait around all day. You can even manage your booking online and re-arrange delivery for another date or arrange the goods to be left with a neighbour of your choice.

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    • Sunday Pre-Noon Delivery (on select products only) at £14.50*

    *UK mainland only

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