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Testo 770-1 True RMS Hook Clamp Meter - AC/DC

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£91.19 £75.99
Lead Time: 1-6 Days Free UK Delivery* Delivery Options

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If you've ever used a clamp meter inside an electrical cabinet, you'll know how tricky it can be sometimes to clamp around the wire you need. Testo's uniquely designed 770 series clamp meters solve this problem with unique, retractable pincers which can easily fit around these difficult measurement points.

Unlike other clamps, the jaws of the 770-1 don't open outwards together. Instead, one side of the jaws retracts downwards while you hook the other side around the wire. Once hooked, simply let go of the trigger, and the retractable section will clip into place to form the loop around the wire.

The 770-1 is the entry-level model in the 770 series. It's suitable for basic electrical measurements, including current from 0.1A to 400A (AC/DC), voltage from 1mV to 600V (AC/DC), resistance from 0.1Ω to 40MΩ, frequency from 0.01Hz to 10kHz and capacitance from 0.001μF to 100μF. Continuity and diode checks can also be performed.

The Testo 770-1 is a true RMS clamp meter. With this technology built-in, measurements taken of AC current and voltage are as accurate as possible, even when testing on noisy, distorted and irregular circuits. For added convenience, both AC/DC current and voltage can be measured automatically, saving you time and effort when configuring tests.

Testo 770-1 Clamp Meter Key Features

  • Unique hook design separates and grabs wires without using your hands
  • Retractable section of hook for easy connection
  • Automatically identifies testing in progress and selects correct meter configuration
  • True RMS - accurate even when testing irregular AC waveforms
  • AC/DC voltage measurements from 1mV to 600V
  • AC/DC current measurements from 0.1 to 400A
  • Resistance measurements from 0.1Ω to 40MΩ
  • Capacitance measurements from 0.001μF
  • Frequency measurements from 1Hz to 10kHz
  • Continuity and diode tests
  • CAT IV 600V safety rated
  • In-rush (starting) current capture
  • Automatic power off when left idle
  • MIN/MAX function
  • Data hold function
  • Includes 2 year warranty from Testo

What's Included?

  • Testo 770-1 Clamp Meter
  • Batteries
  • Tead Leads

Optional Accessories

  • 0590 0008 - Set of Safety Alligator Clips
  • 0590 0009 - Set of Standard Alligator Clips
  • 0590 0011 - Standard 4ft Pin Tip Leads (with Right Angle Plug)
  • 0590 0012 - Standard 4ft Pin Tip Leads (with Straight Plug)
  • 0590 0013 - Standard 6ft Pin Tip Leads (with Right Angle Plug)
  • 0590 0014 - Standard 6ft Pin Tip Leads (with Straight Plug)
  • 0590 0017 - Testo 775/Testo 770 Carrying Case
Part Code0590 7701

Testo 770 Series Technical Specifications

Model Number770-1770-2770-3
True RMS Yes Yes Yes
Basic Accuracy 0.8% 0.1%
Voltage Measurement Range 1mV to 600V AC/DC
Current Measurement Range 0.1 to 400A AC/DC 0.1 to 600A AC/DC
Power Measurement - - Yes
μA Measurement Range - 0.1 to 400μA AC/DC
Resistance Measurement Range 0.1Ω to 40MΩ 0.1Ω to 60MΩ
Frequency Measurement Range 0.001Hz to 10kHz
Capacitance Measurement Range 0.001μF to 100μF 0.001μF to 60000μF
Temperature Measurement Range - -20 to +500°C
Bluetooth and Testo Smart Probes App - - Yes
Continuity Testing Yes Yes Yes
Diode Testing Yes Yes Yes
Display (Counts) 4000 6000
Measurement Category CAT IV 600V
Operating Temperature -10 to +50°C
Storage Temperature -15 to +60°C
Dimensions 243 x 96 x 43mm (L x W x H)
Weight 378g
Warranty 2 years
Authorisations TUV, CSA, CE
Standards EN 61326-1, EN 61140
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