The Testo 770-3 Premium Kit is a professional True RMS AC/DC clamp meter kit designed for HVAC-R technicians, electricians and service professionals working in tight switchboards, heat pumps, mini splits and refrigeration equipment. Its innovative retractable hook clamp makes it easier to separate and grab individual wires in cramped electrical spaces, helping improve speed and accuracy during diagnostics.
As the top model in the Testo 770 clamp meter range, the 770-3 adds Bluetooth connectivity, power measurement, temperature measurement and extended electrical testing functions. It connects to the Testo Smart App, allowing technicians to record, monitor and document measurements directly from a mobile device.
Key Features
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Professional True RMS AC/DC clamp meter
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Bluetooth connectivity via the Testo Smart App
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Innovative retractable hook clamp for tight cable access
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Automatic measurement parameter recognition
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Measures AC/DC current up to 600 A
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Measures AC/DC voltage up to 1000 V
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Measures resistance, continuity, diode, frequency and capacitance
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Microamp measurement for HVAC flame rectification testing
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Type K temperature measurement up to 500°C
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Power and power factor measurement up to 600 kW
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Large two-line digital display
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Magnetic holder for hands-free operation
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Supplied as a complete premium kit with leads, clips, probe and carry bag
Specifications
| Item | Specification |
|---|
| Brand | Testo |
| Model | 770-3 Premium Kit |
| Product Code | 0590 7703 05 |
| Product Type | True RMS AC/DC Clamp Meter Kit |
| Current Range | 0.01 to 600 A AC/DC |
| Voltage Range | 1 mV to 1000 V AC / 0.1 mV to 1000 V DC |
| Microamp Range | 0.1 to 600 µA AC/DC |
| Resistance Range | 0.01 Ω to 60 MΩ |
| Frequency Range | 0.001 Hz to 9.999 kHz |
| Capacitance Range | 0.001 nF to 60 mF |
| Temperature Range | -20°C to +500°C |
| Power Measurement | 1 mW to 600 kW |
| Display | 6000 count, two-line digital display |
| Safety Rating | CAT IV 600 V / CAT III 1000 V |
| Connectivity | Bluetooth / Testo Smart App |
| Basic Accuracy | ±0.1% |
| Standards / Approvals | CE, CSA / ETL |
Kit Includes
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1 × Testo 770-3 TRMS Clamp Meter
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1 × Set of measuring cables
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1 × Type K temperature probe
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1 × Set of crocodile clips
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1 × Set of micro clips
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1 × Magnetic holder
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Batteries
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Transport bag
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Calibration protocol
Applications
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HVAC-R electrical diagnostics
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Air conditioning and heat pump servicing
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Refrigeration control testing
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Mini split electrical fault finding
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Compressor and fan motor current testing
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Flame rectification testing using microamps
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Voltage, resistance, continuity and diode checks
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Temperature measurement with Type K probe
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Power measurement and system performance checks
The Testo 770-3 Premium Kit gives HVAC-R technicians a complete clamp meter package for electrical testing, temperature checks and smart measurement documentation. With True RMS accuracy, Bluetooth connectivity, power measurement and a compact hook clamp design, it is a strong choice for professional service work in tight electrical environments.
