Hioki Clampmeters
AC and AC/DC clamp meters for current measurement without circuit interruption.
15 products found
Shop Hioki Clampmeters
3280-10F
Hioki 3280-10F Clampmeter 1000A AC
Compact everyday clamp meter with 1000A AC range and mean-value (average rectified) measur...
3280-70F
Hioki 3280-70F Clampmeter 4200A AC
High-capacity AC clamp meter with 4200A range and CT6280 flexible current sensor. For larg...
CM3289
Hioki CM3289 Clampmeter 1000A AC
Slim-jaw 1000A AC clamp meter with True RMS measurement. Φ33mm jaw fits crowded panels. M...
CM3281
Hioki CM3281 Clampmeter 2000A AC
Mid-range 2000A AC clamp meter with mean-value measurement and large Φ46mm jaw for heavy ...
CM3291
Hioki CM3291 Clampmeter 2000A AC
Advanced 2000A AC clamp meter with True RMS and a large Φ46mm jaw for heavy industrial ca...
3288
Hioki 3288 Clampmeter 1000A AC/DC
Robust 1000A AC clamp meter for industrial applications. Mean value measurement, CAT III 3...
3288-20
Hioki 3288-20 Clampmeter 1000A AC/DC
Robust 1000A AC clamp meter with True RMS measurement for accurate readings on non-sinusoi...
3287
Hioki 3287 Clampmeter 100A AC/DC
Compact everyday AC clamp meter with 100A True RMS. Ideal for electrical contractors doing...
CM4141-50
Hioki CM4141-50 Clampmeter 2000A AC
Professional AC clamp meter with 2000A True RMS current measurement, slim Φ55mm jaw and B...
CM4371-50
Hioki CM4371-50 Clampmeter 600A AC/DC
Premium AC/DC clamp meter with 600A range, True RMS measurement and Bluetooth wireless con...
CM4373-50
Hioki CM4373-50 Clampmeter 2000A AC/DC (Solar)
High-capacity AC/DC clamp meter with 2000A range, True RMS measurement and Bluetooth conne...
CM4375-50
Hioki CM4375-50 Clampmeter 1000A AC/DC
Versatile AC/DC clamp meter with 1000A range, True RMS, and safe DC measurement up to 2000...
CM4001
Hioki CM4001 AC Leakage Clampmeter 60mA–600A
Wide-range AC leakage clamp meter from 0.6mA to 600A with True RMS. Slim Φ24mm jaw. Measu...
CM4002
Hioki CM4002 AC Leakage Clampmeter 6mA–200A
Sensitive AC leakage clamp meter from 0.06mA to 200A with True RMS. Φ40mm jaw. Measures f...
CM4003
Hioki CM4003 AC Leakage Clampmeter 6mA–200A
Advanced 0.06mA–200A AC leakage clamp meter with True RMS and external output for record...
What is a Clamp Meter?
A clamp meter is a non-contact electrical test instrument that measures current by clamping around a live wire. Instead of breaking the circuit and inserting an in-line ammeter, you simply open the clamp jaw, position it around the conductor, and read the amperage on the display. The meter detects the magnetic field generated by the flowing current and converts it to a readable measurement.
Why this matters: Clamp meters eliminate downtime during commissioning and troubleshooting. In India’s growing solar and industrial sectors, non-contact measurement is essential for safe, fast electrical system testing.
Key advantage: A 50 kW solar system that would require 4+ hours of downtime for traditional in-line ammeter testing can be fully commissioned in under 1 hour with a clamp meter.
Why Choose Hioki Clamp Meters?
Hioki is Japan’s leading manufacturer of clamp meters, with over 30 years of expertise in current sensing technology. Hioki clamp meters are preferred by Indian electricians, solar installers, and maintenance engineers for three reasons:
1. True RMS Measurement
Modern industrial systems use VFDs, inverters, and soft starters that produce distorted waveforms. Budget clamp meters with average-responding technology underestimate current by 10–25% on these systems. Hioki’s True RMS meters measure actual power, not a calculated average. Critical for solar PV systems, motor testing, and HVAC work.
2. Safety Ratings (CAT IV 600V / CAT III 1000V)
Professional liability insurance in India requires CAT IV minimum for electrical work. Hioki clamp meters exceed this standard, rated CAT IV 600V for distribution panels and CAT III 1000V for high-voltage solar installations. Using under-rated equipment voids insurance and creates legal liability.
3. AC/DC Capability for Solar Work
India’s solar boom created demand for meters that measure both AC (inverter output) and DC (battery strings, charge controllers) with one tool. Hioki’s AC/DC clamp meters handle both, eliminating tool swaps and speeding up commissioning.
4. ±1–1.5% Accuracy for Professional Commissioning
Budget meters claim ±3–5% accuracy, which is inadequate for system verification. Hioki delivers ±1–1.5%, allowing confident verification against manufacturer specs during installation and troubleshooting.
Popular Hioki Clamp Meter Models & Comparison
Hioki’s clamp meter lineup spans from AC-only budget models to high-end AC/DC instruments for solar installations. Use this comparison to find the right model for your application:
| AC/DC | Model | Best For | True RMS | CAT Rating | Max Current |
|---|---|---|---|---|---|
| AC only | CM3289 | Budget AC-only contractor work | Yes | CAT IV 600V | 1000A |
| AC/DC | CM4371-50 | Residential solar, batteries | Yes | CAT IV 600V | 600A |
| AC/DC | CM4375-50 | Commercial solar (RECOMMENDED) | Yes | CAT IV 600V / CAT III 1000V | 1000A |
| Leakage only | CM4002 | Safety testing, leakage current | N/A | CAT IV 600V | 200A |
Clamp Meter Applications in Indian Industry
Hioki clamp meters are essential tools across multiple industries and applications. Here's how they're used:
Solar PV Installation & Maintenance
Measure inverter AC output, verify DC string current, detect imbalanced strings.
→ Read: Using Clampmeters for Solar PV MeasurementMotor Testing & Predictive Maintenance
Measure motor inrush current at startup, detect unbalanced three-phase loads, identify bearing problems through current analysis. VFD-driven motors require True RMS to avoid measurement errors.
HVAC System Commissioning
Verify compressor current, detect short-cycling, measure three-phase balance on RTU units. Essential for warranty compliance and performance verification.
Electrical Panel Work & Troubleshooting
Verify circuit breaker loads, detect overloaded circuits, troubleshoot nuisance tripping without taking circuits offline. Fast, safe, professional.
Battery & UPS System Testing
Measure DC charge/discharge current on battery systems, verify UPS switchover current. AC/DC clamp meters essential for this work.
Industrial Equipment Maintenance
Measure current on pumps, fans, conveyors, welding systems. Detect degradation over time by trending current readings. Preventive maintenance saves ₹100,000+ in unexpected downtime.
Frequently Asked Questions
What's the difference between AC and AC/DC clamp meters?
Why is True RMS important?
What CAT rating do I need?
Can I use a clamp meter on insulated cables?
How do I verify my clamp meter is reading correctly?
What's the warranty on Hioki clamp meters?
Do you offer technical support?
Buy Hioki Clampmeters in India
Industrial Supply Syndicate is an authorized independent reseller of Hioki clampmeters in India. We stock the complete range and ship pan India with GST invoice. For bulk orders, institutional procurement, and tender requirements, please contact us for special pricing.