S120 20K Hz bandwidth 2000A Clamp On Current Transformer

clamp current transformer

The S120 is a general purpose 2000A AC Clamp current probe transformer designed for use with DMMs, cable fault analysis and loggers instruments that have a current input. It has a 1000:1 or 2000:1 ratio and output of 1mA per amp or 1mV per amp measured in the jaw. The S120 has an integral 2.5m or 5m lead terminated. The rounded jaw design on this clamp probe makes it well-suited for cable fault analysis applications where high accuracy and low phase shift and wide frequency.



  • Power quality analyzer(PQA)
  • power and harmonic meters
  • Energy meter calibrator
  • Cable Fault Analysis
  • Measuring around cable bundles
  • Power load monitoring
  • Earth resistance meter
  • Large industrial loads


  • Measurement range of 10mA to 2000A AC
  • Improved ergonomic design & easy operation
  • High content nickel metal permalloy core
  • Frequency 10-2MHz
  • Holding wire diameter: φ120mm
  • Conforms to EN 61010, 600V CAT III
  • Transformation ratio: 1000:1, 2000:5
  • Low phase shift for power measurement
  • Designed for DMMs, recorders, loggers, oscilloscopes, power and harmonic meters
  • UL, CE mark


Electrical parameters
Ratio 1000: 1 or 2000:5 (customized)
Accuracy class 0.1%, 0.2%, 0.5%
Primary current 0 - 2000A AC
Secondary current 0-2A or 0 - 5A AC (customized)
Secondary voltage 0-2V AC (customized)
Max. Cont. Input current 2400A
Over voltage category CAT III 600V
Output signal (AC current) 500mA, 1A,2A,5A  AC at nominal input current
Output signal (AC voltage) 1V, 2V, 10V  AC at nominal input current
Frequency range 10Hz-2MHz
Dielectric strength 3KV 50Hz/60Hz  at 1 minute
Temperature range -40°C to +55°C
Output 2.5 meter cable with D01 connector or BNC
Max. voltage not insulated conductors 600 V
Standard EN 61010-1, EN 61010-2-032, IEC60044-1, IEC61869-2
Installation clamp type
Output mode lead output(2.5m,  5m or 10m)
Accuracy (2000A Range)
0-10A ≤0.5%
10-100 ≤0.2%
100-2000A ≤0.1%
Phase Shift(2000A Range)
0-10A ≤0.5°
10-100 ≤0.2°
100-2000A ≤0.1°
Mechanical parameters
Dimensions (L x W x H) (mm) 178 x 290 x 30
Weight (g) 1200
Holding wire diameter (mm) φ120
Max. jaw opening (mm) 120
Jaw color Red & Grey
Material PC+ABS, UL94 V0

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