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This product has been discontinued. Replaced by UT253A .

UT257A Large Jaws Leakage Clamp Meter (Discontinued)

UT257A is a 3000A large current clamp with AC leakage current detection capability. Its large jaw (108mm× 148mm) is capable of clamping cables up to 108mm in diameter or 160mm×4mm flat-steel ground wires.


Features of UT257A Large Jaws Leakage Clamp Meter

● Auto range; RS-232

● LCD backlight; Data hold
● Over-range display
● Auto power off
● Low battery indication

Specifications of UT257A Large Jaws Leakage Clamp Meter

Specifications Range UT257A
Leakage current (A) 0mA~300A
0mA~499A ±(2%+5)
500A~999A ±(3%+5)
1000A~2999A ±(4%+5)
Voltage (Freq.)
Resolution 0.1mA
Test range  AC 0.0mA~3200A
AC voltage (V) 0.00V~600V
Frequency: 50Hz/60Hz
Display mode 4 digits LCD
Clamp size 108mm×148mm (can clamp φ 108mm wires, or 160mm×4mm flat- steel ground wires)
Data logging 99
Test mode Clamp CT, integration
General Characteristics
Power 6V DC battery (LR6) x 4
Display 47mm x 28.5mm
Product color Red and grey
Product net weight 1.5kg (with batteries)
Product size 350mm x 180mm x 55mm
Standard accessories Batteries, RS-232 interface cable, PC software CD
Standard individual packing Gift box, English manual, tool box
Standard quantity per carton 4pcs
Standard carton measurement 564mm x 428mm x 270mm
Standard carton gross weight 16.4kg
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