HT Instruments HT4022 Digital Clamp Meter CAT III 600V True RMS AC/DC 400A 1003840

True RMS AC/DC clamp meter with 400A current range and CAT III 600V safety rating, ideal for professional electrical measurements.

Overview

The HT Instruments HT4022 is a digital clamp meter designed for accurate measurement of AC/DC current up to 400A, AC/DC voltage up to 600V, resistance, capacitance, frequency, and temperature. It features a 4000-count backlit LCD, non-contact voltage detection, and a 30mm jaw opening for clamping around conductors without breaking the circuit.

What stands out

• True RMS measurement for accurate readings on non-linear loads
• Measures AC and DC current up to 400A
• CAT III 600V safety rating for professional use
• Built-in non-contact voltage (NCV) detector
• Temperature measurement with K-type thermocouple (-20°C to 760°C)
• Data hold, MAX/MIN, and auto power off functions

Technical details

• AC current: 40A / 400A
• DC current: 40A / 400A
• AC voltage: 4V / 40V / 400V / 600V
• DC voltage: 400mV / 4V / 40V / 400V / 600V
• Resistance: 400Ω to 40MΩ
• Capacitance: 40nF to 4mF
• Frequency: 40Hz to 40MHz
• Display: 4000 counts LCD with backlight
• Jaw opening: 30mm
• Continuity test with buzzer and diode test
• Power: 2x 1.5V AAA batteries

Our verdict

A versatile and reliable clamp meter for electricians and technicians, offering a wide range of measurement functions in a compact, safety-rated design.