Hioki CM3289 AC Clamp Meter 1000ATRMS (Replacement 3280-20F)

Availability : in stock

Hioki clamp meters are best-in-class measuring devices incorporating Hioki’ s expertise in current sensing technology. The CM3289 is a True RMS rectifying 1000A AC clamp meter that features a broad operating temperature range of -25° C to 65° C, thin and compact clamp core and optional flexible current sensor that you can attach to let you get into the tightest spots.

CAT IV 300 V (Current)
CAT III 600 V (Current)
CAT III 300 V (Voltage)
CAT II 600 V (Voltage)

Key Features

• The CM3289 is the successor to the popular 3280-20F with a redesigned thinner sensor to help you get into the tightest spaces.
• New redesigned sensor for even easier clamping
• Expanded -25 °C to 65 °C operating temperature range
• Measure even harmonic waveform components using the True RMS method
• Connect the CT6280 flexible sensor to measure up to 4199 A in thick or paired wires

AC Current range

42.00 to 1000 A, 3 ranges
(40 Hz to 1 kHz, True RMS),
Basic accuracy: ±1.5 % rdg. ±5 dgt.

DC Voltage range

420.0 mV to 600 V, 5 ranges, Basic accuracy: ±1.0 % rdg. ±3 dgt.

AC Voltage range

4.200 V to 600 V, 4 ranges
(45 to 500 Hz, True RMS),
Basic accuracy: ±1.8 % rdg. ±7 dgt.

Crest factor

2.5 or less at 2500 counts
(Linearly decreases to 1.5 or less at 4200 count)

Resistance range

420.0 Ω to 42.00 MΩ, 6 ranges, Basic accuracy: ±2 % rdg. ±4 dgt.

Other functions

Continuity: Buzzer sounds at 50 Ω ±40 Ω or less, Data hold, Auto power save, Drop-proof from height of 1 meter


LCD, max. 4199 dgt., Display refresh rate: 400 ms

Power supply

Coin type lithium battery (CR2032) ×1
Continuous use 70 hours

Core jaw dia.

φ 33 mm (1.30 in)

Dimensions and mass

57 mm (2.24 in) W × 181 mm (7.13 in) H × 16 mm (0.63 in) D, 100 g (3.5 oz)

Included accessories

CARRYING CASE 9398 × 1, TEST LEAD L9208 × 1, Coin type lithium battery (CR2032) × 1, Instruction manual × 1

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