New · Dual Open Jaw Design
A3380B / A3383 / A3390
Ultra-Slim
Clamp Meter
17 mm slim body. Dual open jaw. Built for cramped switchboards, VFD panels, and dense cable trays where conventional clamp meters simply don't fit.
17mm
Overall Thickness
1000A
Max Current Range
600V
AC / DC Voltage
CAT II
600V Safety Rating
CAT II 600V Rated
True RMS Accuracy
150g Lightweight
Auto Power Off
Ø40×43mm Jaw Opening
17mm
Slim Body
Slim-First DesignBuilt for Tight Spaces
Built for Tight Spaces
Other Meters Can't Reach
At just 17mm overall thickness, the A3380B / A3383 / A3390 series slips effortlessly into dense switchgear, crowded cable trays, and tight VFD enclosures where conventional clamp meters fail. The dual open-jaw design provides even greater flexibility when access angles are limited.
A Ø40×43mm jaw opening accommodates conductors up to 40mm diameter — plenty for most industrial cable runs. All without sacrificing measurement accuracy or safety certification.
17mm
Overall thickness
150g
Net weight
190×64×22mm
Product dimensions
Ø40×43mm
Jaw opening size
Measurement Capabilities
One Meter, Every Measurement
From daily electrical checks to complex VFD diagnostics, the A-series covers the full spectrum of field measurement tasks.
AC / DC Voltage
Full 600V measurement for residential, commercial, and light industrial circuits. A3383 & A3390 extend down to 400mV for precision low-voltage readings.
AC Current up to 1000A
No-disconnect current measurement from 2A to 1000A. A3390 adds 1000A DC current range for inverter-driven equipment and battery systems.
Resistance / Continuity / Diode
Resistance from 400Ω to 4MΩ (A3383/A3390). Audible continuity beeper for fast circuit tracing. Diode test shows forward voltage drop to verify polarity.
Capacitance (A3383)
Measures from 51.2nF up to 100μF — eliminating the need for a separate capacitance meter on-site. Ideal for HVAC motor cap checks and power factor correction banks.
Frequency & Duty Cycle (A3383)
10Hz to 10MHz frequency range with ±(0.5%+4d) accuracy, plus 0.1–99.9% duty cycle. Essential for PWM signal analysis on variable-frequency drives.
Temperature −20°C to 800°C (A3383)
Built-in temperature measurement with ±(3%+1) accuracy. Diagnose overheating motors, transformers, and switchgear contacts without an additional thermometer.
Three Models, One PlatformChoose the Right Fit
Choose the Right Fit
for Your Workflow
All three models share the same 17mm slim dual-jaw design, CAT II 600V rating, and CR2032×3 battery. Differences are purely in measurement depth.
A3380B
Entry Professional
Ideal for general electrical maintenance, residential wiring, fire protection systems, and everyday field checks. Manual ranging, compact, cost-effective.
AC/DC Voltage600V
AC Current2 / 20 / 200 / 500A
DC Current—
Resistance2kΩ
Capacitance—
Frequency—
Temperature—
Display Count1999
Range SelectionManual
Get A3380B QuoteMost Popular
A3383
Full-Featured Professional
The most complete model in the series. Frequency, temperature, capacitance, duty cycle — everything a maintenance engineer needs in one slim tool.
AC/DC Voltage400mV – 600V
AC Current400A / 1000A
DC Current—
Resistance400Ω – 4MΩ
Capacitance51.2nF – 100μF ✓
Frequency10Hz – 10MHz ✓
Temperature−20°C to 800°C ✓
Display Count3999
Range SelectionAuto / Manual
Get A3383 QuoteA3390
DC Current Specialist
Adds 1000A DC current measurement — perfect for new-energy equipment, inverter systems, battery banks, and industrial DC drives.
AC/DC Voltage400mV – 600V
AC Current400A / 1000A
DC Current400A / 1000A ✓
Resistance400Ω – 4MΩ
Capacitance—
Frequency10Hz – 1MHz
Temperature—
Display Count3999
Range SelectionAuto / Manual
Get A3390 Quote
Where It PerformsReal Applications,
Real Applications,
Real Jobsites
Industrial Switchgear & MCC Panels
The 17mm slim profile and dual open-jaw design let you measure live current in densely packed motor control centres without disturbing adjacent conductors — no shutdown required.
VFD & Inverter System Diagnostics
A3383's 10Hz–10MHz frequency range and duty cycle measurement accurately characterises PWM output signals from variable-frequency drives — diagnosing motor faults without guesswork.
Motor & Transformer Inspection
1000A current range covers large motors and distribution transformers. A3383's temperature function (up to 800°C) simultaneously checks for thermal anomalies — one tool, two critical checks.
New-Energy & DC Battery Systems
A3390's dedicated DC current range (up to 1000A DC) makes it the go-to tool for solar inverters, EV charging infrastructure, and large-format battery bank commissioning.
Electrical Maintenance & Routine Patrol
At 150g and pocket-sized, the A-series is the meter you'll actually carry every day. LCD backlight, data hold, relative mode, and auto power-off make site patrols faster and more reliable.
HVAC Capacitor & Compressor Checks
A3383 measures capacitance up to 100μF — covering virtually all run and start capacitors in HVAC systems. No separate capacitance meter needed on the service van.
Technical Specifications
Complete Specification Comparison
All accuracy values expressed as ±(% reading + digit count). Data sourced from factory datasheet.
| Parameter | A3380B | A3383 | A3390 |
|---|---|---|---|
| DC Voltage | |||
| Range | 600V | 400mV / 4 / 40 / 400 / 600V | 400mV / 4 / 40 / 400 / 600V |
| Best Accuracy | ±(0.8%+2d) | ±(0.5%+2d) | ±(0.5%+3d) |
| AC Voltage | |||
| Range | 600V | 4 / 40 / 400 / 600V | 4 / 49 / 400 / 600V |
| Best Accuracy | ±(1.5%+3d) | ±(1.0%+3d) | ±(1.0%+0d) |
| AC Current | |||
| Range | 2 / 20 / 200 / 500A | 400A / 1000A | 400A / 1000A |
| Best Accuracy | ±(2.5%+10d) | ±(2.0%+5d) | ±(2.5%+5d) |
| DC Current | |||
| Range | — | — | 400A / 1000A |
| Accuracy | — | — | ±(2.5%+5d) |
| Resistance | |||
| Range | 2kΩ | 400Ω / 4k / 40k / 400k / 4MΩ | 400Ω / 4k / 40k / 400k / 4MΩ |
| Best Accuracy | ±(0.8%+2d) | ±(1.0%+2d) | ±(0.5%+3d) |
| Capacitance | |||
| Range | — | 51.2nF / 512nF / 5.12μF / 51.2μF / 100μF | — |
| Accuracy | — | ±(4.0%+5d) ~ ±(5.0%+10d) | — |
| Frequency | |||
| Range | — | 10 / 100 / 1k / 10k / 100k / 1M / 10MHz | 10 / 100 / 1k / 10k / 100k / 1MHz |
| Accuracy | — | ±(0.5%+4d) | ±(0.1%+3d) |
| Duty Cycle & Temperature | |||
| Duty Cycle | — | 0.1% – 99.9%, ±(1.2%+3d) | — |
| Temperature | — | −20°C to 800°C, ±(3%+1) | — |
| General Specifications | |||
| Display Count | 1999 | 3999 | 3999 |
| Diode / Continuity | ✓ / ✓ | ✓ / ✓ | ✓ / ✓ |
| LCD Backlight | ✓ | ✓ | ✓ |
| Data Hold | ✓ | ✓ | ✓ |
| Relative Mode | — | ✓ | ✓ |
| Auto Power Off | ✓ | ✓ | — |
| Range Selection | Manual | Auto / Manual | Auto / Manual |
| Safety Rating | CAT II 600V | CAT II 600V | CAT II 600V |
| Battery | CR2032 × 3 | ||
| Jaw Size | Ø40 × 43mm | ||
| Display Size | 38 × 17mm | ||
| Product Size | 190 × 64 × 22mm | ||
| Net Weight | 150g | ||
| Carton Size | 41.5 × 27 × 47cm | ||
| Qty / Carton | 60 pcs | ||
FAQ
Frequently Asked Questions
Yes. The A3383 and A3390 both measure AC current up to 1000A with ±(2.0–2.5%+5d) accuracy. The 17mm slim body is a mechanical design choice — it does not compromise measurement performance. The A3390 also adds 1000A DC current measurement, making it suitable for large battery banks and DC drive systems.
Choose the A3380B for residential and light commercial work — it covers 600V and 500A AC with manual ranging at the lowest price point. Choose the A3383 if you need the full toolkit: frequency, temperature, capacitance, duty cycle, and auto ranging — this is the most versatile model. Choose the A3390 if DC current measurement up to 1000A is a priority (solar, EV, battery systems) and you don't need temperature or capacitance.
The jaw opening is Ø40×43mm, accommodating single conductors up to 40mm in diameter. This covers most low-voltage power cables in industrial and commercial environments. The dual open-jaw design also allows clamping at awkward angles when access is restricted from one side.
All three models carry CAT II 600V certification with overvoltage protection rated to 600V impulse. Three-phase 380V circuits fall within the CAT II 600V protection envelope. Always verify that the installation category and voltage of the circuit match or are lower than the meter's rating before measuring.
Yes. The A3383's frequency range covers 10Hz to 10MHz at ±(0.5%+4d), and its duty cycle function measures 0.1–99.9%. This combination accurately characterises PWM waveforms from standard variable-frequency drives. For measurements on signals with significant high-frequency harmonic content, use the voltage measurement function with care as standard RMS detection may be affected by non-sinusoidal waveforms.
Each carton contains 60 units per model. MOQ and pricing tiers vary by region and distributor tier. Please use the quote form below to contact our sales team with your target quantity, destination, and preferred model mix.
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