Extech Clamp Meters
Diagnose motors, controllers, and complex electrical panels safely and efficiently with Extech’s versatile range of clamp meters. Whether you are measuring high-capacity utility lines, tracking variable frequency drive signals, or capturing motor inrush currents, these tools provide unparalleled accuracy without interrupting the circuit. From ultra-compact mini-clamps designed for tightly packed enclosures to heavy-duty CAT IV-rated power clamp meters for industrial transformers, Extech equips professionals with the exact diagnostic instruments needed to maintain mission-critical infrastructure.
Advanced AC/DC & AC Clamp Meters
Professional-grade clamp meters loaded with advanced filtering, thermovision, and safety features for rigorous industrial environments.
EX840A 1000A AC/DC Clamp Meter: A CAT IV-rated 1000A True RMS AC/DC meter featuring a built-in non-contact IR thermometer with a laser pointer for locating hot spots. Features Peak Hold and a 1.7" (43 mm) jaw size.
EX820A 1000A AC Clamp Meter: A 1000A True RMS AC meter that integrates an IR thermometer (-58 to 518°F) to safely identify overheating components before testing.
EX655 True RMS 600A Clamp Meter: Features a Low Pass Filter (LPF) for accurate measurement of variable frequency drive signals and a Low Impedance (LoZ) mode to prevent false readings from ghost voltages. Includes an Inrush function to capture motor startups.
EX623A 400A Dual Input Clamp Meter: Combines True RMS electrical measurements with dual Type-K thermocouple inputs and a built-in IR thermometer. Includes a DC µA function specifically for HVAC flame rod current measurements.
MA445 True RMS 400A AC/DC Clamp Meter: A True RMS meter with a DC Zero function, built-in non-contact voltage (NCV) detector, and a Type K temperature function (-40 to 1832°F).
MA443 True RMS 400A AC Clamp Meter: A True RMS AC meter featuring a built-in NCV detector, flashlight, and Type K temperature measurement capabilities.
MA440 400A AC Clamp Meter: A compact, averaging AC current meter with a built-in NCV detector and a 1.2" (30 mm) jaw accommodating conductors up to 500 MCM.
Mini Clamp Meters
Ultra-compact clamp meters engineered for high-resolution measurements in tight, difficult-to-access electric panels and control boxes.
380947 400A AC/DC Mini Clamp Meter: A True RMS mini-clamp offering high 1 mA AC current resolution and non-contact frequency measurements up to 10 kHz directly through the jaws.
380941 200A AC/DC Mini Clamp Meter: Features high-resolution (10 mA AC/DC) measurements with a fast 40-segment bargraph and one-touch Auto Zero for DC current.
MA120 200A AC/DC Mini Clamp Meter: An ultra-compact meter with a 0.7" (17 mm) jaw size, integrating an AC Voltage detector and a white LED flashlight for dark enclosures.
MA63 True RMS 60A Clamp Meter: Delivers highly accurate low-current readings with Variable Frequency Control (VFC) filtering and a built-in NCV detector.
380942 30A AC/40A DC Mini Clamp Meter: Provides the highest resolution available (0.1 mA AC / 1 mA DC) for extreme precision at low currents, featuring True RMS and a 0.9" (23 mm) jaw.
380950 80A AC/DC Mini Clamp Meter: A True RMS mini-clamp with 1 mA AC current resolution, capable of measuring voltage, resistance, frequency, and capacitance.
High Capacity & Power Clamp Meters
Heavy-duty clamp meters built for utility-scale applications, 3-phase power distribution, and massive conductor sizes.
380926 2000A Clamp Meter: A massive CAT IV-rated 2000A AC/DC meter with a 2-inch (50 mm) jaw designed to fit 750 MCM conductors. Features high-resolution multimeter functions.
MA1500 1500A Clamp Meter: A CAT IV 1500A AC/DC True RMS meter equipped with an integrated NCV detector, an Inrush function for motor startups, and a 40,000 count backlit LCD.
PQ2071 Power Clamp Meter: A 1-Phase and 3-Phase CAT IV 1000A AC Power Clamp Meter measuring True, Apparent, and Reactive Power, plus Power Factor and Phase Angle. Includes a USB interface.
380976-K 3-Phase Power Clamp Meter Kit: A comprehensive kit measuring 1-Phase/3-Phase True Power (kW), Apparent Power (kVA), and Reactive Power (kVAR). Includes a large dual LCD display and a complete CAT IV test lead kit.