Auto Ranging 80 Amp AC/DC Clamp Meter with NCV Detector

ITEM # CM380

Auto Ranging 80 Amp AC/DC Clamp Meter with NCV Detector

The Auto Ranging 80 Amp AC/DC Clamp Meter with NCV Detector has three attributes well-suited for troubleshooting automotive and manufacturing process control systems. The first two are 0.1mV and 1mA resolutions on its narrowest AC/DC voltage and current measurement ranges. These premium specs enable troubleshooters to quickly isolate short and open circuits within wiring bundles and check the performance of process control system elements—such as 4-20mA current loops and 0-10V instrumentation outputs, panel instruments, motors, motor drives, relays and solenoids—without having to cut any wiring. The third attribute is a feature: a clamp jaw sized to tightly enclose a standard battery cable.


Best For:



  • 11 functions, 38 ranges
  • Measures AC/DC current, AC/DC voltage, resistance, frequency (through the clamp or test leads), capacitance and duty cycle
  • Also measures surface temperature via the included Type "K" thermocouple probe
  • Uses a beeper to verify the integrity of diodes and check circuits for continuity
  • 0.1mV and 1mA maximum resolutions
  • The clamp jaw is sized for automotive electrical cables
  • Auto or manual ranging
  • ETL approved for CAT III 600V use
  • Large backlit LCD
  • Built-in non-contact voltage (NCV) detector with audible and visual alerts
  • Relative measurements for DC voltage, DC current and capacitance
  • Built-in LED work light
  • Auto power off
  • NIST calibration is available


  • AC/DC current measurement ranges: 0 to 4A/40A/80A 
  • AC/DC current measurement accuracy/resolution: ±(2.5% + 5 counts)/1mA (max)
  • AC voltage measurement ranges: 0 to 400mV/4V/40V/400V/600V 
  • AC voltage measurement accuracy/resolution: ±(1% + 3 digits)/0.1mV (max)
  • DC voltage measurement ranges: 0 to 400mV/4V/40V/400V/600V
  • DC voltage measurement accuracy/resolution: ±(0.8% + 3 digits)/0.1mV (max)
  • Resistance measurement ranges: 0 to 400Ω/4kΩ/40kΩ/400kΩ/4MΩ/40MΩ
  • Resistance measurement accuracy/resolution: ±(0.8% + 3 digits) typical ≥1MΩ/0.1Ω (max)
  • Frequency measurement ranges: 40Hz to 100Hz/1kHz/10kHz via clamp jaw; 10Hz to 100Hz/1kHz/10kHz/100kHz/1MHz/10MHz via test leads
  • Frequency measurement accuracy/resolution: ±(1.5% + 5 digits) via clamp jaw/0.01Hz (max); ±(0.3% + 5 digits) via test leads/0.001Hz (max)
  • Capacitance measurement ranges: 0 to 4nF/40nF/400nF/4μF/40μF/400μF/4000μF/40,000μF
  • Capacitance measurement accuracy/resolution: ±(4% + 3 digits)/0.001nF
  • Temperature measurement range: -4° to 1832°F (-20° to 1000°C)
  • Temperature measurement accuracy/resolution: ±(3% + 2 digits)/0.1° below 1000°; 1° above 1000°
  • Duty cycle measurement range: 0.5 to 99.5%
  • Duty cycle measurement accuracy: ±3%
  • Display type and size: 4000-count LCD with 0.5 in. (13mm) high digits
  • Clamp jaw opening: 0.95 in. (24mm)
  • Operating temperature: 14° to 122°F (-10° to 50°C)
  • Auto power off: After 15 minutes of inactivity
  • Weight (including batteries): 7.6 oz. (215g)
  • Power source: Three "AAA" batteries (included)


  • Double-insulated test leads with screw-on alligator clips
  • Type "K" thermocouple probe and plug adaptor
  • Soft pouch
  • Batteries
  • 3-year limited warranty


  • 8.19 x 3.07 x 1.38 in. (208 × 78 × 35mm)