testo 770-3 Digital Clamp Meter CAT III 1000 V, CAT IV 600 V, 6000 Counts (0590 7703 02)

The testo 770-3 digital clamp meter stands out with its True RMS measurement and Bluetooth connectivity to the Testo Smart App, enabling remote data logging and analysis. Its 34 mm jaw opening accommodates conductors up to 600 A, while the 6000-count backlit LCD ensures clear readings in any lighting.

Highlights

• True RMS measurement for accurate AC/DC current and voltage readings
• Bluetooth connectivity for wireless data transfer to Testo Smart App
• 6000-count backlit LCD display with auto-ranging for ease of use
• Safety rated CAT III 1000 V and CAT IV 600 V for industrial environments
• Inrush current measurement to capture motor start-up spikes

In daily use

This clamp meter is ideal for electricians and HVAC technicians who need reliable measurements in tight spaces. The slim jaw design allows access to crowded panels, and the acoustic continuity test speeds up troubleshooting. With a wide temperature range and robust construction, it performs in demanding field conditions.

Full specifications

• Display: LCD, 6000 counts, backlit
• AC/DC Current: 0.1 to 600 A
• AC Voltage: 0.1 to 600 V; DC Voltage: 0.1 to 1000 V
• Resistance: 0.1 Ω to 60 MΩ
• Capacitance: 0.001 µF to 60 mF
• Frequency: 0.001 Hz to 60 MHz
• Temperature (Type K): -20 to +500 °C (with optional probe)
• Continuity test with acoustic signal; diode test
• Jaw opening: 34 mm
• Power supply: 3 x AAA batteries
• Operating temperature: -10 to +50 °C

Final note

The testo 770-3 combines precision and connectivity, making it a versatile tool for modern electrical diagnostics.