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HIOKI Precision Current Clamps with Zero-Flux Technology.

2026-04-22-precision-current-clamps-keyvisual-category-no-text

Precision Current Clamps
for every application

Current, Bandwidth & Size: Pick your Current Clamp

HIOKI precision current clamps are designed for engineers who need accurate AC/DC current measurement without disconnecting the conductor. This is often the case in existing systems like automotive testing. The wide range of clamp designs cover everything from high-current measurements on large conductors to compact installations in tight spaces and small conductor applications. 

Choose the right precision current clamp from three groups: 

2026-04-22-precision-current-clamps-keyvisual-category-no-text
Precision Current Clamps
for every application

Current, Bandwidth & Size: Pick your Current Clamp

HIOKI precision current clamps are designed for engineers who need accurate AC/DC current measurement without disconnecting the conductor. This is often the case in existing systems like automotive testing. The wide range of clamp designs cover everything from high-current measurements on large conductors to compact installations in tight spaces and small conductor applications. 
Choose the right precision current clamp from three groups: 
  • CT684xA Series – Current clamps up to 2000 A
    Six different models designed for high-precision AC/DC current measurement on conductors up to 50 mm diameter, and an operating temperature range from -40°C to +85°C. 
  • Super-slim “Dolphin” current clamps up to 500 A
    Compact clamps for tight spaces, combining a wide operating temperature range with ±0.07% rdg. DC accuracy and DC to 50 kHz bandwidth. 
  • Ultra-compact current probes up to 20 A
    Small split-core probes for confined spaces and cable harnesses, with slide mechanism, 5 mm conductor diameter, and DC to 100 kHz bandwidth.
14 Products
HIOKI CT6843A - AC/DC High-accuracy Current Clamp, 200 A / 700 kHz HIOKI CT6843A - AC/DC High-accuracy Current Clamp, 200 A / 700 kHz
CT6843A

HIOKI CT6843A - AC/DC High-accuracy Current Clamp, 200 A / 700 kHz

AC/DC current clamp using advanced fluxgate technology, 200A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, wide bandwidth from DC to 700 kHz, maximum conductor diameter 20 mm, cable length 3 m

€2,018.00
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HIOKI CT6847A ac dc high accuracy current clamp 2000 a 70 khz HIOKI CT6847A ac dc high accuracy current clamp 2000 a 70 khz maximum conductor diameter 50 mm
CT6847A

HIOKI CT6847A - AC/DC High-accuracy Current Clamp, 2000 A / 70 kHz

AC/DC current clamp using advanced fluxgate technology, 2000 A rated current, basic accuracy ±0.15% rdg., wide temperature range of -40 °C to 85 °C, bandwidth from DC to 70 kHz, maximum conductor diameter 50 mm, cable length 3 m

€2,868.00
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HIOKI CT6834 - Super-slim AC/DC high-accuracy Current Clamp, 500 A / 50 kHz HIOKI CT6834 super slim AC DC high accuracy current clamp basic accuracy plus minus 0 07 percent rdg
CT6834

HIOKI CT6834 - Super-slim AC/DC high-accuracy Current Clamp, 500 A / 50 kHz

Ultra-slim AC/DC current clamp using advanced fluxgate technology, 500 A rated current, DC to 50 kHz frequency bandwidth, high accuracy ±0.07% rdg., wide temperature range of -40°C to +85°C, maximum conductor diameter 20 mm, cable length 5 m

€2,368.00
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HIOKI CT6841A - AC/DC High-accuracy Current Clamp, 20 A / 2 MHz HIOKI CT6841A - AC/DC High-accuracy Current Clamp, 20 A / 2 MHz
CT6841A

HIOKI CT6841A - AC/DC High-accuracy Current Clamp, 20 A / 2 MHz

AC/DC current clamp using advanced fluxgate technology, 20A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, wide bandwidth from DC to 2 MHz, maximum conductor diameter 20 mm, cable length 3 m

€1,948.00
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HIOKI CT6831 - Ultra-compact AC/DC Current Probe, 20 A / 100 kHz HIOKI CT6831 - Ultra-compact AC/DC Current Probe, 20 A / 100 kHz
CT6831

HIOKI CT6831 - Ultra-compact AC/DC Current Probe, 20 A / 100 kHz

Ultra small zero flux clamp-on AC/DC Current Probe using flux gate detection, high accuracy ±0.3% rdg., wide temperature range -40 to 85 °C, measurable current up to 20 A, ME15W connector

€1,628.00
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20
HIOKI CT6844A - AC/DC High-accuracy Current Clamp, 500 A / 500 kHz HIOKI CT6844A - AC/DC High-accuracy Current Clamp, 500 A / 500 kHz
CT6844A

HIOKI CT6844A - AC/DC High-accuracy Current Clamp, 500 A / 500 kHz

AC/DC current clamp using advanced fluxgate technology, 500A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, wide bandwidth from DC to 500 kHz, maximum conductor diameter 20 mm, cable length 3 m

€1,702.40 €2,128.00
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HIOKI CT6845A - AC/DC Current Clamp, Fluxgate, 500 A / 200 kHz HIOKI CT6845A - AC/DC Current Clamp, Fluxgate, 500 A / 200 kHz
CT6845A

HIOKI CT6845A - AC/DC Current Clamp, Fluxgate, 500 A / 200 kHz

AC/DC current clamp using advanced fluxgate technology, 500A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, bandwidth from DC to 200 kHz, maximum conductor diameter 50 mm, cable length 3 m

€2,128.00
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HIOKI CT6846A - AC/DC High-accuracy Current Clamp, 1000 A / 100 kHz HIOKI CT6846A - AC/DC High-accuracy Current Clamp, 1000 A / 100 kHz
CT6846A

HIOKI CT6846A - AC/DC High-accuracy Current Clamp, 1000 A / 100 kHz

AC/DC current clamp using advanced fluxgate technology, 1000A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, bandwidth from DC to 100 kHz, maximum conductor diameter 50 mm, cable length 3 m

€2,498.00
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HIOKI CT6833 - Super-slim AC/DC high-accuracy Current Clamp, 200 A / 50 kHz HIOKI CT6833 current clamp 200a 50khz high accuracy 0 07 percent
CT6833

HIOKI CT6833 - Super-slim AC/DC high-accuracy Current Clamp, 200 A / 50 kHz

Ultra-slim AC/DC current clamp using advanced fluxgate technology, 200 A rated current, DC to 50 kHz frequency bandwidth, high accuracy ±0.07% rdg., wide temperature range of -40°C to +85°C, maximum conductor diameter 20 mm, cable length 5 m

€2,288.00
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HIOKI CT6833-01 - Super-slim AC/DC high-accuracy Current Clamp, 200 A / 50 kHz, 10 m cable HIOKI CT6833-01 - Super-slim AC/DC high-accuracy Current Clamp, 200 A / 50 kHz, 10 m cable
CT6833-01

HIOKI CT6833-01 - Super-slim AC/DC high-accuracy Current Clamp, 200 A / 50 kHz, 10 m cable

Ultra-slim AC/DC current clamp using advanced fluxgate technology, 200 A rated current, DC to 50 kHz frequency bandwidth, high accuracy ±0.07% rdg., wide temperature range of -40°C to +85°C, maximum conductor diameter 20 mm, cable length 10 m

€2,608.00
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HIOKI CT6834-01 - Super-slim AC/DC high-accuracy Current Clamp, 500 A / 50 kHz, 10 m cable HIOKI CT6834 super slim AC DC high accuracy current clamp 500 A 50 kHz
CT6834-01

HIOKI CT6834-01 - Super-slim AC/DC high-accuracy Current Clamp, 500 A / 50 kHz, 10 m cable

Ultra-slim AC/DC current clamp using advanced fluxgate technology, 500 A rated current, DC to 50 kHz frequency bandwidth, high accuracy ±0.07% rdg., wide temperature range of -40°C to +85°C, maximum conductor diameter 20 mm, cable length 10 m

€2,678.00
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HIOKI CT6830 - Ultra-compact AC/DC Current Probe, 2 A / 100 kHz HIOKI CT6830 current probe 2a 100khz
CT6830

HIOKI CT6830 - Ultra-compact AC/DC Current Probe, 2 A / 100 kHz

Ultra-small, zero-flux clamp-on AC/DC Current Probe using flux gate detection, high accuracy ±0.3% rdg., wide temperature range -40 to 85 °C, measurable current up to 2 A, ME15W connector

€1,628.00
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p1000086_1920

💡 What’s the right clamp for you? – Here’s your checklist

Which clamp fits your needs best? To find the right one, check your main parameters

  • How much current do I need to measure?
    Up to 2000 A for power monitoring or 20 A for detailed circuit analysis?
  • What bandwidth do I need to cover?
    Do I require high-frequency precision up to 2 MHz?
  • Where will I use the clamp, and what size do I need?
    Ø50 mm for large conductors or Ø5 mm for smaller ones? How much space is available?

The answers will guide you to the right current sensor equipment for your automotive, power electronics, or industrial setups.

P1000188

Current, Bandwidth & Size: Precision Current Clamp Sensor Overview

HIOKI’s AC/DC current clamps offer deliver stable, reliable, and high-accuracy measurements - all without interrupting your setup. Select the best-fitting model for your application based on the main parameters.

Model Rated current Bandwidth Basic accuracy Max. conductor diameter
CT6847A ±2000 A DC – 70 kHz ±0.15% rdg Ø 50 mm
CT6846A ±1000 A DC – 100 kHz ±0.2% rdg Ø 50 mm
CT6845A ±500 A DC – 200 kHz ±0.2% rdg Ø 50 mm
CT6844A ±500 A DC – 500 kHz ±0.2% rdg Ø 20 mm
CT6843A ±200 A DC – 700 kHz ±0.2% rdg Ø 20 mm
CT6841A ±20 A DC – 2 MHz ±0.2% rdg Ø 20 mm
CT6834 ±500 A DC – 50 kHz ±0.07% rdg Ø 20 mm
CT6833 ±200 A DC – 50 kHz ±0.07% rdg Ø 20 mm
CT6831 ±20 A DC – 100 kHz ±0.3% rdg Ø 5 mm
CT6830 ±2 A DC – 100 kHz ±0.3% rdg Ø 5 mm
CT684xA Series – Current clamps up to 2000 A Super-slim “Dolphin current clamps up to 500 A Ultra-compact current probes up to 20 A
sensors_compilation

Simply clamp and measure: the CT684xA-Series

The CT684xA series consists of 6 models delivering high-precision AC/DC current measurement with two clamp sizes: for conductors up to 50 mm diameter and up to 2000 A (CT6847A) and for conductors up to 20 mm diameter up to 500 A (CT6844A). 

Ideal for automotive testing, power electronics, and industrial monitoring, these zero-flux current clamps provide reliable insights for high-frequency analysis, inverter efficiency testing, and quality control with an operating temperature range of -40°C to +85°C.

Model Rated current Bandwidth Basic accuracy Max. conductor diameter
CT6847A ±2000 A DC – 70 kHz ±0.15% rdg Ø 50 mm
CT6846A ±1000 A DC – 100 kHz ±0.2% rdg Ø 50 mm
CT6845A ±500 A DC – 200 kHz ±0.2% rdg Ø 50 mm
CT6844A ±500 A DC – 500 kHz ±0.2% rdg Ø 20 mm
CT6843A ±200 A DC – 700 kHz ±0.2% rdg Ø 20 mm
CT6841A ±20 A DC – 2 MHz ±0.2% rdg Ø 20 mm
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HIOKI CT6847A ac dc high accuracy current clamp 2000 a 70 khz HIOKI CT6847A ac dc high accuracy current clamp 2000 a 70 khz maximum conductor diameter 50 mm
CT6847A
HIOKI CT6847A - AC/DC High-accuracy Current Clamp, 2000 A / 70 kHz
AC/DC current clamp using advanced fluxgate technology, 2000 A rated current, basic accuracy ±0.15% rdg., wide temperature range of -40 °C to 85 °C, bandwidth from DC to 70 kHz, maximum conductor diameter 50 mm, cable length 3 m

€2,868.00
View product
HIOKI CT6846A - AC/DC High-accuracy Current Clamp, 1000 A / 100 kHz HIOKI CT6846A - AC/DC High-accuracy Current Clamp, 1000 A / 100 kHz
CT6846A
HIOKI CT6846A - AC/DC High-accuracy Current Clamp, 1000 A / 100 kHz
AC/DC current clamp using advanced fluxgate technology, 1000A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, bandwidth from DC to 100 kHz, maximum conductor diameter 50 mm, cable length 3 m

€2,498.00
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HIOKI CT6845A - AC/DC Current Clamp, Fluxgate, 500 A / 200 kHz HIOKI CT6845A - AC/DC Current Clamp, Fluxgate, 500 A / 200 kHz
CT6845A
HIOKI CT6845A - AC/DC Current Clamp, Fluxgate, 500 A / 200 kHz
AC/DC current clamp using advanced fluxgate technology, 500A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, bandwidth from DC to 200 kHz, maximum conductor diameter 50 mm, cable length 3 m

€2,128.00
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20
HIOKI CT6844A - AC/DC High-accuracy Current Clamp, 500 A / 500 kHz HIOKI CT6844A - AC/DC High-accuracy Current Clamp, 500 A / 500 kHz
CT6844A
HIOKI CT6844A - AC/DC High-accuracy Current Clamp, 500 A / 500 kHz
AC/DC current clamp using advanced fluxgate technology, 500A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, wide bandwidth from DC to 500 kHz, maximum conductor diameter 20 mm, cable length 3 m

€1,702.40 €2,128.00
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HIOKI CT6843A - AC/DC High-accuracy Current Clamp, 200 A / 700 kHz HIOKI CT6843A - AC/DC High-accuracy Current Clamp, 200 A / 700 kHz
CT6843A
HIOKI CT6843A - AC/DC High-accuracy Current Clamp, 200 A / 700 kHz
AC/DC current clamp using advanced fluxgate technology, 200A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, wide bandwidth from DC to 700 kHz, maximum conductor diameter 20 mm, cable length 3 m

€2,018.00
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HIOKI CT6841A - AC/DC High-accuracy Current Clamp, 20 A / 2 MHz HIOKI CT6841A - AC/DC High-accuracy Current Clamp, 20 A / 2 MHz
CT6841A
HIOKI CT6841A - AC/DC High-accuracy Current Clamp, 20 A / 2 MHz
AC/DC current clamp using advanced fluxgate technology, 20A rated current, basic accuracy ±0.2% rdg., wide temperature range of -40 °C to 85 °C, wide bandwidth from DC to 2 MHz, maximum conductor diameter 20 mm, cable length 3 m

€1,948.00
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CT684xA Series – Current clamps up to 2000 A Super-slim “Dolphin current clamps up to 500 A Ultra-compact current probes up to 20 A
Bild

High-accuracy and super-slim “dolphin" current clamps: CT6833 & CT6834

Form follows function: The CT6833 and CT6834 AC/DC Current Clamps deliver near pass-through sensor basic accuracy of ±0.07% packed in an ultra-slim design. 

Achieve exceptional measurement precision for demanding tests like WLTP, thanks to fluxgate-technology and a wide operating temperature range

Key Features 

  • AC/DC Currents up to 500 A (CT6834) | 200 A (CT6833) 
  • Frequency bandwidth: DC to 50 kHz 
  • Max conductor diameter: 20 mm 
  • Operating temperature range: -40°C to +85°C 
  • DC accuracy of ±0.07% rdg.

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HIOKI CT6833 - Super-slim AC/DC high-accuracy Current Clamp, 200 A / 50 kHz HIOKI CT6833 current clamp 200a 50khz high accuracy 0 07 percent
CT6833
HIOKI CT6833 - Super-slim AC/DC high-accuracy Current Clamp, 200 A / 50 kHz
Ultra-slim AC/DC current clamp using advanced fluxgate technology, 200 A rated current, DC to 50 kHz frequency bandwidth, high accuracy ±0.07% rdg., wide temperature range of -40°C to +85°C, maximum conductor diameter 20 mm, cable length 5 m

€2,288.00
View product
HIOKI CT6834 - Super-slim AC/DC high-accuracy Current Clamp, 500 A / 50 kHz HIOKI CT6834 super slim AC DC high accuracy current clamp basic accuracy plus minus 0 07 percent rdg
CT6834
HIOKI CT6834 - Super-slim AC/DC high-accuracy Current Clamp, 500 A / 50 kHz
Ultra-slim AC/DC current clamp using advanced fluxgate technology, 500 A rated current, DC to 50 kHz frequency bandwidth, high accuracy ±0.07% rdg., wide temperature range of -40°C to +85°C, maximum conductor diameter 20 mm, cable length 5 m

€2,368.00
View product
HIOKI CT6833-01 - Super-slim AC/DC high-accuracy Current Clamp, 200 A / 50 kHz, 10 m cable HIOKI CT6833-01 - Super-slim AC/DC high-accuracy Current Clamp, 200 A / 50 kHz, 10 m cable
CT6833-01
HIOKI CT6833-01 - Super-slim AC/DC high-accuracy Current Clamp, 200 A / 50 kHz, 10 m cable
Ultra-slim AC/DC current clamp using advanced fluxgate technology, 200 A rated current, DC to 50 kHz frequency bandwidth, high accuracy ±0.07% rdg., wide temperature range of -40°C to +85°C, maximum conductor diameter 20 mm, cable length 10 m

€2,608.00
View product
HIOKI CT6834-01 - Super-slim AC/DC high-accuracy Current Clamp, 500 A / 50 kHz, 10 m cable HIOKI CT6834 super slim AC DC high accuracy current clamp 500 A 50 kHz
CT6834-01
HIOKI CT6834-01 - Super-slim AC/DC high-accuracy Current Clamp, 500 A / 50 kHz, 10 m cable
Ultra-slim AC/DC current clamp using advanced fluxgate technology, 500 A rated current, DC to 50 kHz frequency bandwidth, high accuracy ±0.07% rdg., wide temperature range of -40°C to +85°C, maximum conductor diameter 20 mm, cable length 10 m

€2,678.00
View product

See the super-slim CT6833 and CT6834 Current Clamps in action!

These two clamps make a difference with their compact, user-friendly design that enables quick and easy installation. Make current measurements faster and more accurate than ever and with outstanding measurement stability – optimized for efficient on-site testing.

CT684xA Series – Current clamps up to 2000 A Super-slim “Dolphin current clamps up to 500 A Ultra-compact current probes up to 20 A
CT6830_application

Ultra-compact current probes up to 20 A: CT6830 & CT6831

HIOKI’s smallest AC/DC current probes CT6830 and CT6831 are engineered to perform in tight spaces. With a practical slide mechanism, they ensure quick installation and stable measurements on conductors in confined environments. These small split-core probes also feature fluxgate-technology, delivering exceptional accuracy and reliability even in extreme conditions. 

Both probes easily connect with power analyzers, DAQ systems and oscilloscopes making them the perfect choice for precise current measurements in electronics, vehicle development and power engineering.

Key features 

  • Rated current: up to 2 A (CT6830) | up to 20 A (CT6831) 
  • Frequency bandwidth: DC to 100 kHz 
  • Max. conductor diameter: 5 mm 
  • Wide temperature range -40°C to +85°C
  • High accuracy ±0.3 % rdg.

Skip product gallery
HIOKI CT6830 - Ultra-compact AC/DC Current Probe, 2 A / 100 kHz HIOKI CT6830 current probe 2a 100khz
CT6830
HIOKI CT6830 - Ultra-compact AC/DC Current Probe, 2 A / 100 kHz
Ultra-small, zero-flux clamp-on AC/DC Current Probe using flux gate detection, high accuracy ±0.3% rdg., wide temperature range -40 to 85 °C, measurable current up to 2 A, ME15W connector

€1,628.00
View product
HIOKI CT6831 - Ultra-compact AC/DC Current Probe, 20 A / 100 kHz HIOKI CT6831 - Ultra-compact AC/DC Current Probe, 20 A / 100 kHz
CT6831
HIOKI CT6831 - Ultra-compact AC/DC Current Probe, 20 A / 100 kHz
Ultra small zero flux clamp-on AC/DC Current Probe using flux gate detection, high accuracy ±0.3% rdg., wide temperature range -40 to 85 °C, measurable current up to 20 A, ME15W connector

€1,628.00
View product

Precise Current Clamps: Improve Your Applications


HIOKI current clamps enable precise, real-time measurement of high currents without disrupting setups, ensuring accuracy and efficiency in dynamic waveform analysis across key industries.
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Power Electronics & Inverter Testing


Optimize inverter output and power conversion for renewable energy and industrial systems, ensuring high efficiency and stability.
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Automotive & EV Testing


Evaluate battery current and motor drive efficiency in EVs and hybrids, ensuring WLTP & SAE J1634 compliance for optimized energy management.
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Industrial Power Monitoring


Monitor high-current loads and AC/DC distribution in factories and heavy machinery, detecting anomalies and improving efficiency.
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Circuit Testing & Low-Current Measurements


Capture precision micro-currents and circuit stability in compact electronics, analyzing power consumption for efficient design.
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Battery & Power Supply Analysis


Assess charge/discharge cycles, load response, and transient behavior to ensure stable power delivery and extended battery life.

Zero-Flux Current Sensors Explained: Like in “Back to the Future”?

untitled-design-5-1920x1920_800
Ever wondered how zero-flux current sensors work? This blog takes you behind the science of this cutting-edge technology - exploring its principles, applications, and why it might sound familiar. Check it out:

Do you remember the “flux capacitor” that Doc Brown invented in Back to the Future? It was the heart of the DeLorean, enabling time travel when powered with 1.21 GW of energy. While zero-flux current sensors won’t send you through time, they do use a fascinating principle that delivers unmatched accuracy in current measurement.

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See all HIOKI current sensors