Extech Instruments MA443, MA445, MA200 Series, MA140 Series, MA160 Catalog Page

Mini Clamp Meters and Open Jaw Clamp Meters400A Clamp Meters

N Indicates products that are available with optional calibration traceable to NIST. See page 160 for a complete listing.

MA443/MA445 True RMS 400A Clamp Meters + NCV

Pocket-sized meter with built-in Non-Contact Voltage detector and choice
of AC or AC/DC Current model

• 1.2" (30mm) jaw size accommodates conductors up to 500MCM

• Model MA443 with True RMS AC Current function
Model MA445 with True RMS AC/DC Current functions

• Type K Temperature function with probe included

• 4000 count backlit LCD display

• Built-in flashlight illuminates work area

• Relative mode for Capacitance Zero and Offset Adjustment

• Min/Max, Data Hold, Auto Power Off and Low battery indicator

• CAT III-600V category rating

Model MA443 Model MA445

4mF, 40mF (0.01nF)

True RMS 400A AC Clamp Meter $69.99

True RMS 400A AC/DC Clamp Meter $99.99

Includes test leads, general purpose
Type K bead wire probe, three AAA
batteries, and pouch; 1 year warranty

SPECIFICATIONS

AC Current 4.000A, 40.00A, 400.0A (1mA) 40.00A, 400.0A (10mA)
DC Current — 40.00A, 400.0A (10mA)
Current accuracy AC: ±1.8% AC: ±2.5%, DC: ±2.0%

DC Voltage 400.0mV, 4V, 40, 400V 600V (0.1mV) 400.0mV, 4V, 40, 400V 600V (0.1mV)

AC Voltage 4V, 40V, 400V 600V(0.1mV) 4V, 40V, 400V 600V(0.1mV)
Basic accuracy AC: ±1.2% DC: ±0.8% AC: ±1.2% DC: ±0.8%
Resistance (Ω) 400, 4k, 40k, 400k, 4M, 40M (0.1Ω) 400, 4k, 40k, 400k, 4M, 40M (0.1Ω)
Capacitance 40nF, 400nF, 4µF, 40µF, 400µF,

Frequency 10Hz to 1MHz (0.01Hz) 10Hz to 1MHz (0.01Hz)
Temperature -40° to 1832°F/-40° to 1000°C (1°F/°C) -40° to 1832°F/-40° to 1000°C (1°F/°C)
Dimensions/ Weight 9x3x1.6" (228x77x41mm)/ 9.3oz (265g) 9x3x1.6" (228x77x41mm)/ 9.3oz (265g)

ORDERING

MA443 N

MA445

N

40nF, 400nF, 4µF, 40µF, 400µF,
4mF, 40mF (0.01nF)

MA140 Series True RMS 300A Mini Clamp Meters + NCV

Choice of AC Current or AC/DC Current model with high accuracy

• 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

• 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; 1 year warranty

Smart Auto Sense feature
enables the meter to
recognize the input (within
a given function) and
automatically switch to the
correct mode of operation
(i.e. AC to DC Current
measurement)

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/ Weight 5.8x2.4x1.2" (147x60x31mm)/ 4.9oz (140g)

MA140 MA145

ORDERING

MA140 N

MA145

N

True RMS 300A AC Mini Clamp Meter+NCV $109.99

True RMS 300A AC/DC Mini Clamp Meter+NCV $139.99

MA160/MA260 True RMS 200A AC Open Jaw Clamp Meters

MA200 Series 400A Clamp Meters

Includes test leads, case, and two
AAA batteries; MA220 also includes
general purpose Type K bead wire
probe; 1 year warranty

Easy-to-use, economical clamp meters

• Compact size allows measurements in tight locations

• 0.9" (23mm) jaw size accommodates conductors up to 300MCM

• Data Hold, Auto Power Off

• Overload protection, Overrange and low battery indicators
Model MA200 (AC Current)

• Max Hold
Model MA220 (AC/DC Current)

• One touch “Auto Zero”

• Functions include Capacitance, Frequency, Temperature, and Duty Cycle

SPECIFICATIONS

AC Current 2, 20, 200, 400A (0.001A) 40, 400A (0.01A)
DC Current — 40, 400A (0.01A)
Basic accuracy ±2.5% AC: ±3%, DC: ±2.5%

AC/DC Voltage 200mV, 2V, 20, 200V, 600V (0.1mV) 400mV, 4V, 40V, 400V, 600V (0.1mV)

Basic accuracy AC:±1.5% DC:±1.2% AC:2%,DC:±1.5%
Resistance 200, 2k, 20k, 200k, 2M, 20M (0.1Ω) 400, 4k, 40k, 400k, 4M, 40MΩ (0.1Ω)
Capacitance — 40nF, 400nF, 4µF, 40µF, 100µF (0.01nF)
Frequency — 5Hz, 50Hz, 500Hz, 5kHz, 150kHz

Temperature — -58 to 1830°F (-50 to 1000°C) (1°)
Duty Cycle — 0.5 to 99.0% (0.1%)
Continuity Beeper ≤30Ω Beeper ≤30Ω ≤30Ω Beeper ≤30Ω
Dims/Wt. 7.9x2x1.4" (200x50x35mm)/ 7oz (200g) 7.9x2x1.4” (200x50x35mm)/ 7oz (200g)

MA200 MA220

(0.001Hz)

ORDERING

MA200 N

MA220

N

400A AC Clamp Meter $54.99

400A AC/DC Clamp Meter $109.99

MA160 ETL Listed; MA260 UL Listed

Convenient Open jaw design
provides quick measurements
in tight locations

0.6" (16mm) Open jaw design provides quick current measurements in tight

locations without breaking the circuit

• True RMS for accurate readings of noisy, distorted or non-sinusoidal waveforms

• Built-in Non-Contact Voltage (NCV) detector with audible alert and LED indicator

• Auto Power Off with disable

Model MA160 (CAT III-600V rating; ETL listed)

• 2000 count 2-level backlit LCD display

• Convenient LED worklight for viewing in dimly lit area

• Relative Mode for Capacitance Zero and offset adjustment

• Complete with test leads, two AA batteries, and pouch

Model MA260 (CAT IV-600V rating, UL Listed)

• Smart Auto Sensing technology enables the meter to recognize the
input and automatically switch to the correct mode of operation

• For AC Voltage, Auto Sense feature evaluates input signal and
adjusts Input Impedance to eliminate effects of ghost voltages

• 10,000 count backlit LCD display with Smart Data Hold feature

• Complete with test leads and two AAA batteries; 1 year warranty

SPECIFICATIONS

AC Current (max res.) 200A (0.1A) 200A (0.1A)
DC Current (max res.) 200A (0.1A) —
AC/DC Voltage (max res.) AC: 750V (1mV); DC: 1000V (1mV) 1000V (0.1V)
Non-contact Voltage 100 to 750V 80 to 1000V AC (50 to 60Hz)

Resistance (max res.) 60MΩ (0.1Ω) 10kΩ (1Ω)
Capacitance (max res.) 60mF (0.01nF) —
Diode/ Continuity Yes Yes
Dimensions/ Weight 8.3x2.1x1.4" (210x53x35mm)/ 5.8oz (164g) 7.6x2.1x1.2" (193x54x31mm)/ 9.9oz (280g)

MA160 MA260

ORDERING

MA160 N
MA260 CAT IV True RMS 200A AC Open Jaw Clamp Meter $139.99

True RMS 200A AC/DC Open Jaw Clamp Meter $129.99

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