UNI-T UT281A Digital Clamp Meter with True RMS Flex Clamps UT281C UT281E Measures DC Current and Frequency

Description

UNI-T UT281 Series True RMS Flexible Clamp Meters represent the pinnacle of Original Engineering for high-current diagnostics in restrictive industrial environments. Utilizing advanced Rogowski coil technology, the UT281A, UT281C, and UT281E models are designed to measure AC current up to 3000A without the physical limitations of traditional rigid-jaw clamp meters. While standard meters struggle in densely packed switchgear, the flexible sensor loop easily navigates around thick, multiple, or irregularly shaped conductors.

Technical Specifications:
Brand: UNI-T
Model Series: UT281A, UT281C, UT281E
Measurement Technology: True RMS Flexible Clamp (Rogowski Coil)
AC Current Range: 30.00A / 300.0A / 3000A (±3% + 5 digits)
Frequency Response: 45Hz to 500Hz
Inrush Current Measurement: 0.5A to 3000A
Coil Length (UT281A): 25.4 cm (10 inches)
Coil Length (UT281C / UT281E): 45.7 cm (18 inches)
Voltage Measurement (UT281E Only): AC/DC Voltage up to 600V
Resistance Measurement (UT281E Only): Up to 60M Ohm
Display Count: 3000
Refresh Rate: 3 times per second
Safety Category: CAT IV 600V
Ingress Protection: IP54 (Dust and Splash Resistant)
Drop Test Durability: 2 meters
Power Supply: 1.5V AAA batteries (x3)
Operating Temperature: 0°C to 50°C

Application Analysis:
The UT281 series is engineered for critical electrical maintenance in heavy manufacturing, power distribution grids, and commercial HVAC systems. The flexible coil design provides exceptional Technical Compatibility when navigating complex busbar configurations, crowded junction boxes, or large-diameter cables where standard meters fail to close. The inclusion of Inrush current measurement allows technicians to accurately capture motor startup surges, preventing nuisance tripping and diagnosing compressor faults.

Procurement and Lifecycle Value:
Built to withstand harsh industrial conditions with an IP54 rating and 2-meter drop resistance, these meters ensure long-term reliability. We maintain an optimized supply chain to guarantee a minimized Lead Time for all UNI-T diagnostic equipment, ensuring your maintenance teams remain fully equipped with certified, high-accuracy instrumentation.

Key Attributes
Max. Ac Current: 0.5A~3000A
Max. DC Current: 0.5A~3000A
Measuring Voltage Range: 600V
Place of Origin: China
Model Number: UT281A
Brand Name: UNI-T
Dimensions: 435mm x 380mm x 245mm
Display Type: LCD
Instrument Safety Rating: CAT II 600V
Max. Ac Voltage: 600 V
Max. DC Voltage: 600V
Measuring Capacitance Range: No
Measuring Current Range: 30A/300A/3000A
Measuring Inductance Range: 20Hz~30kHz
Measuring Resistance Range: 60MΩ
Operating Temperature: -13 to 149°F (-25 to 65°C)
Parameters Measured: Frequency, AC Voltage, DC Current
Weight: 0.5kg
Display: 32 x 34mm (1.8 inches)
Power: 1.5V battery (R03) x 3

Packaging and Delivery
Selling Units: Single item
Single package size: 32X17X12 cm
Single gross weight: 0.700 kg