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Extech AM300 300A AC Analog Clamp Meter

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Extech AM300 300A AC Analog Clamp Meter


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Extech AM300 300A AC Analog Clamp Meter

Extech AM300 300A AC Analog Clamp Meter



AM300 300A AC Analog Clamp Meter by Extech


  • Single function/range switch for easy one-handed operation
  • Jaw opens to 1.5" (38mm)
  • AC/DC Voltage and Resistance measurement
  • Pointer Lock function freezes the reading
  • Zero adjust
  • Complete with test leads, 1.5V battery, and carrying case


  • Utility Company maintenance and installation
  • Plant Maintenance
  • Electrical installation and repair
  • Automotive repair and testing
  • Appliance insulation testing
  • HVAC troubleshooting
General Specifications
Clamp jaw opening 1.5" (38mm) max.
Display Analog with Zero Adjustment
Input Impedance 240kΩ (75VDC range), 530kΩ (300VAC range, 1MΩ (600VAC range)
AC bandwidth 50 to 60Hz (50 to 400Hz for 15 through 300ACA ranges)
Ambient conditions Temperature 32 - 104°F (0 - 40°C); Relative Humidity <80%
Operating Altitude 7000ft. (2000m) maximum.
Battery One (1) 1.5V 'AA' Battery
Fuse 0.5A / 250V glass fuse (6mm x 30mm); spare fuse supplied
Dimensions & Weight 9.0 x 2.8 x 1.5" (230 x 72 x 37mm); 14.7oz. (416g)
Safety For indoor use and in accordance with the requirements for double insulation to IEC1010-1 (2001): EN61010-1 (2001) Overvoltage Category II 600V, Pollution Degree 2.

Range Specifications
Function Ranges Accuracy
AC Current (50/60Hz) 6, 15, 60, 150, and 300A AC ± 3% of Full Scale for 50/60Hz
AC Voltage (50/60Hz) 300 and 600V AC ± 3% of Full Scale
DC Voltage 75V DC ± 3% of Full Scale
Resistance 2000Ω (20Ω mid-scale) ± 3% of Scale Length

Datasheets & User Manuals

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