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Extech MA443 400A True RMS AC Clamp Meter

Extech Instruments
SKU: EXTEMA443
  • 30mm jaw for measuring AC current up to 400A
  • True RMS & Type K-Temperature probe included
  • Integrated Non-Contact Voltage Detector & Test Leads for Digital Multimeter functions
More Info
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Extech MA443 400A True RMS AC Clamp Meter

The Extech MA443 400A True RMS AC Clamp Meter is perfectly designed to obtain highly accurate readings of non-sinusoidal waveforms even on inconsistent circuits. Utilising a 30mm (1.2") jaw, True RMS and a Type-K Temperature probe the meter can measure AC current up to 400A, AC/DC Voltage to 600V, and temperatures between -40˚C and 1000˚C (1˚).

With an integrated non-contact voltage detector and multimeter functions, the Extech MA443 is suited for a variety of tasks. The large tactile dial and button interface employed by the device, in addition to the backlit LCD display, provide an intuitive operating system for the user. Data Hold, MAX/MIN functions, auto power off and low battery indicator are all included as standard.

Battery powered & compact for easy handheld operation, the Extech MA443 has an extremely convenient built-in flashlight, comes complete with a pouch and is rated CAT III 600V. This clamp meter is the upgraded version of the Extech MA440 model.

Key Features

  • 30mm (1.2") jaw size measures AC current and fit conductors up to 500MCM
  • Built in Non-Contact (NCV) detector
  • Multimeter capable of measuring Resistance, Capacitance and Resistance
  • True RMS
  • Relative mode for Capacitance
  • Data Hold, MAX / MIN, Auto Power off and Low Battery indicator functions
  • Large LCD display with backlight
  • Built in flashlight
  • CAT III 600V

Extech part number: MA443

Extech MA440 Series Comparison Table

Specifications MA440 (Max. Resolution) MMA443 (Max. Resolution) MA445 (Max. Resolution)
AC Current 400.0A (1mA) 400.0A (1mA) True RMS 400.0A (10mA) True RMS
DC Current - - 400.0A (10mA)
Basic Current Accuracy AC: ±2.0% AC: ±1.8% AC: ±2.5%, DC: ±2.0%
DC Voltage 600V (0.1mV) 600V (0.1mV) True RMS 600V (0.1mV) True RMS
AC Voltage 600V (1mV) 600V (1mV) 600V (1mV)
Basic Voltage Accuracy AC: ±1.2% DC: ±0.8% AC: ±1.2% DC: ±0.8% AC: ±1.2% DC: ±0.8%
Non-Contact Voltage (NCV) 100 to 600V 100 to 600V 100 to 600V
Resistance 40MΩ (0.1Ω) 40MΩ (0.1Ω) 40MΩ (0.1Ω)
Capacitance 100μF (0.01nF) 40mF (0.01nF) 40mF (0.01nF)
Frequency 1MHz (0.01Hz) 1MHz (0.01Hz) 1MHz (0.01Hz)
Temperature (Type K - meter range) - -40° to 1832°F/-40° to 1000°C (1°) -40° to 1832°F/-40° to 1000°C (1°)
Duty Cycle ✔ ✔ ✔
Diode/Continuity ✔ ✔ ✔
Dimensions 9x3x1.6" (228x77x41mm) 9x3x1.6" (228x77x41mm) 9x3x1.6" (228x77x41mm)
Weight 9.3oz (265g) 9.3oz (265g) 9.3oz (265g)

What's In The Box?

  • Extech MA443 400A True RMS AC Clamp Meter
  • Type-K Temperature probe
  • Test Leads
  • 3 x AAA Batteries
  • Pouch
Specification
  • AC Current Range: 400.0A (1mA) True RMS
  • AC Current Accuracy: Current Accuracy: AC ±1.8%
  •  AC Voltage: 600V (1mV)
  • DC Voltage: 600V (-0.1mV) True RMS
  • Voltage Accuracy: AC ±1.2%, DC ±0.8%
  • Non-Contact Voltage (NCV): 100 to 600V
  • Resistance: 40MΩ (0.1Ω)
  • Capacitance: 40mF (0.01nF)
  • Frequency: 1MHz (0.01Hz)
  • Temperature (Type K - meter range): -40˚ to 1000˚C(1˚) (-40˚ to 1832˚F)

 

General Information:

  • Duty Cycle: Yes
  • Diode / Continuity: Yes
  • Dimensions: 228 x 77 x 41mm (9 x 3 x 1.6")
  • Weight: 265g (9.3oz)