Extech MA140 Data Sheet

MA140/MA145 True RMS 300A

Mini Clamp Meters + NCV

Model MA145

AC/DC Current

Choice of AC Current or AC/DC Current model with 0.8" (22mm) jaw size and high accuracy. Smart Auto Sense feature enables the MA145 to recognize the input (within a given function) and automatically switch to the correct mode of operation (i.e. AC to DC Current measurement). Built-in Non-Contact Voltage (NCV) Detector allows for quick detection of live voltage.

Features

• True RMS for accurate readings of noisy, distorted or

non-sinusoidal waveforms

• Model MA140 — AC Current

Model MA145 — AC/DC Current and Zero function for

accurate DC measurements

• Compact 0.8" (22mm) jaw size accommodates

conductors up to 300MCM and allows measurements

in tight locations

• Unique Smart Auto Sense feature

• Low Pass Filter (LPF) for accurate measurement of

variable frequency drive signals

• Built-in Non-Contact Voltage (NCV) detector

• Inrush current measurement

• 6000 count backlit LCD display

• Smart Data Hold: Audiovisual alert when a new

reading exceeds 50 digits of a held reading

• Low battery indicator and Auto Power Off feature

• CAT III-600V safety rating

• Complete with carrying case and two LR44 batteries

Model MA140

AC Current

Speciﬁcations

AC Current (max resolution) 60A, 300A (0.01A) 60A, 300A (0.01A)

DC Current (max resolution) — 60A, 300A (0.01A)

Basic accuracy ±2.0% AC: ±1.5%, DC: ±1.5%

Non-Contact Voltage (NCV) 80 to 600V 80 to 600V

Dimensions 5.8x2.4x1.2" (147x60x31mm) 5.8x2.4x1.2" (147x60x31mm)

Weight 4.9oz (140g) 4.9oz (140g)

PRODUCT DATASHEETPRODUCT DATASHEET

Ordering

MA140 N ........ True RMS 300A AC Mini Clamp Meter+NCV

MA145 N ........ True RMS 300A AC/DC Mini Clamp Meter+NCV

N Indicates products that are available with optional calibration traceable to NIST. Order with -NIST after part number for product plus Calibration Certiﬁcate.

MA140 MA145

MA140 UPC Code: 793950371404 MA145 UPC Code: 793950371459

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