HT Instruments HT12 Digital Clamp Multimeter CAT III 300V CAT II 600V 3400 Counts

Electricians and HVAC technicians rely on the HT Instruments HT12 clamp meter for quick current measurements without breaking the circuit. It measures AC current up to 200 A by clamping around a single conductor, and also handles AC/DC voltage to 600 V, resistance, capacitance, frequency, continuity and diode testing. The 3400-count LCD display offers clear readings, and the 25 mm jaw opening accommodates common cable sizes.

Key specifications

• AC current: 0.1 A to 200 A
• AC voltage: 0.1 V to 600 V
• DC voltage: 0.1 V to 600 V
• Resistance: 0.1 Ω to 34 MΩ
• Capacitance: 0.01 nF to 3400 µF
• Frequency: 0.01 Hz to 3.4 kHz
• True RMS measurement
• Jaw opening: 25 mm
• Safety rating: CAT III 300 V, CAT II 600 V
• Auto ranging, data hold, continuity buzzer, diode test
• Power: 2x 1.5 V AAA batteries, auto power off

Why choose it

The HT12 combines essential clamp meter functions in a compact, easy-to-use design. True RMS ensures accurate readings even with distorted waveforms, and the auto power off extends battery life. Its CAT III 300 V / CAT II 600 V rating makes it suitable for a wide range of electrical work.

Ideal use cases

• Measuring current in distribution panels and branch circuits
• Troubleshooting motors, compressors, and HVAC equipment
• Verifying voltage and continuity in residential and commercial installations

Good to know

The meter is powered by two AAA batteries (not specified if included). Always verify the measurement category for your specific application.