Description
AC Clamp Meter ST-81A – Digital True RMS Current Tester
Product Overview
The AC Clamp Meter ST-81A is a high-precision digital measuring instrument designed for safe and accurate AC current measurement without disconnecting live wires. Built for electricians, maintenance engineers, and industrial technicians, this clamp meter delivers reliable performance in residential, commercial, and industrial electrical applications.
With its ergonomic clamp design, clear LCD display, and durable construction, the ST-81A ensures fast diagnostics, overload protection, and enhanced safety during electrical testing. It is ideal for troubleshooting motors, distribution panels, HVAC systems, generators, and power circuits.
This AC clamp meter is an essential tool for professionals who require accurate readings, durability, and ease of use in demanding environments.
Key Features of AC Clamp Meter ST-81A
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True RMS AC current measurement
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Non-contact clamp testing (no wire disconnection required)
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Large backlit LCD display
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Overload protection for safety
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Data Hold function
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Low battery indication
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Compact and lightweight design
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Durable industrial-grade body
Technical Specifications
| Specification | Details |
|---|---|
| Model | ST-81A |
| AC Current Range | 0 – 1000A |
| AC Voltage Range | 0 – 750V |
| DC Voltage Range | 0 – 1000V |
| Resistance Range | Up to 20MΩ |
| Frequency Measurement | Yes |
| Jaw Opening Size | Approx. 50mm |
| Display Type | Digital LCD |
| Power Supply | 9V Battery |
| Safety Rating | CAT III 600V |
| Operating Temperature | 0°C to 40°C |
Measurement Functions
| Function | Availability |
|---|---|
| AC Current | ✔ |
| AC Voltage | ✔ |
| DC Voltage | ✔ |
| Resistance | ✔ |
| Continuity Test | ✔ |
| Diode Test | ✔ |
| Data Hold | ✔ |
| Overload Protection | ✔ |
Applications
| Industry / Area | Usage |
|---|---|
| Electrical Maintenance | Current and voltage testing |
| Industrial Plants | Motor load monitoring |
| HVAC Systems | Compressor and system diagnostics |
| Power Distribution | Panel inspection |
| Residential Wiring | Fault detection |
| Generator Testing | Load measurement |
Benefits of Using ST-81A Clamp Meter
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✅ Safe live wire measurement
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✅ Accurate and stable readings
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✅ Reduces downtime during troubleshooting
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✅ Easy one-hand operation
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✅ Reliable for industrial and field work
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✅ Cost-effective professional tool
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