Uni-T UT281A Flexible Digital Clamp Meter
The UNI-T UT281A Flexible Digital Clamp Meter is a professional True RMS AC current measuring instrument featuring a flexible Rogowski coil that enables accurate current measurement around large cables, busbars, and crowded electrical panels. Unlike conventional clamp meters, its lightweight flexible sensor easily wraps around conductors with limited access, making it ideal for industrial power systems and maintenance applications.
Designed for electricians and industrial technicians, the UT281A offers True RMS measurement, inrush current capture, data hold, backlit LCD display, and automatic power-off. Its rugged IP54-rated housing and 2-meter drop resistance provide reliable operation in demanding work environments, while the CAT IV 600V safety rating ensures dependable performance during electrical inspections.
Features:
- 2m drop proof, ETL/Intertek certified 3rd edition CE.
- Coil diameter: 0.75cm, bending length: 45.7cm.
- Large LCD display for clear reading.
- True RMS.
- Long press INRUSH key for 2s to measure inrush current.
- Data hold, backlight, auto power off.
Specifications:
| Specifications | Range | UT281A | UT281C | UT281E |
| AC current (A) | 30A/300A/3000A | ±(3%+5) | ±(3%+5) | ±(3%+5) |
| Frequency response | 45Hz~500Hz
(sine wave) |
√ | √ | √ |
| Inrush current | 0.5A~3000A
(for reference) |
√ | √ | √ |
| AC voltage (V) | 600V | ±(1.2%+3) | ||
| Resistance (Ω) | 60MΩ | ±(1.2%+3) | ||
| Frequency (Hz) | 20Hz~30kHz | ±(1%+2) | ||
| Features | ||||
| Range selection | Manual | Manual | Auto (manual range available in current measurement) | |
| Flex coil size | 10”(25.4cm) radius: 1.5”(3.8cm) |
18” (45.7cm) radius: 3.1”(8cm) |
18” (45.7cm) radius: 3.1” (8cm) |
|
| Display count | 3000 | 3000 | 6000 (3000 in current measurement) |
|
| Refresh rate | 3 times/s | 3 times/s | 3 times/s | |
| True RMS | √ | √ | √ | |
| Display interface (LCD) | Single | Single | Dual | |
| Data hold/Buzzer | √ | √ | √ | |
| Auto power off | √ | √ | √ | |
| Low battery indication | √ | √ | √ | |
| Backlight/Function selection | √ | √ | √ | |
| 2m drop test | √ | √ | √ | |
| IP rating | IP54 | IP54 | ||
| General Characteristics | ||||
| Power | 1.5V battery (R03) x 3 | |||
| Display | 32 x 34mm (1.8 inches) | |||
| Product color | Red and grey | |||
| Product net weight | UT281A: 220g; UT281C: 236g; UT281E: 250g | |||
| Product size | UT281A: 300mm x 150mm x 55mm; UT281C: 350mm x 190mm x 55mm; UT281E: 325mm x 180mm x 30mm | |||
| Standard accessories | Batteries, PC software CD, test leads (UT281E) | |||
| Standard individual packing | Gift box, blister, English manual | |||
| Standard quantity per carton | UT281A/UT281C: 8pcs; UT281E: 10pcs | |||
| Standard carton measurement | UT281A: 580mm x 380mm x 180mm; UT281C: 420mm x 355mm x 425mm; UT281E: 435mm x 380mm x 245mm | |||
| Standard carton gross weight | UT281A: 4.9kg; UT281C: 6.2kg; UT281E: 6.3kg | |||
Applications:
- Industrial electrical maintenance.
- Power distribution systems.
- Electrical panel inspections.
- Switchgear maintenance.
- Transformer testing.
- Large motor current measurement.
- Generator maintenance.
- Renewable energy systems.
- Manufacturing plants.
- Commercial building electrical service.
- Preventive maintenance.
- Field electrical diagnostics.
Package Includes:
- 1 × UNI-T UT281A Flexible Digital Clamp Meter.
- 3 × AAA Batteries.
- 1 × User Manual.