S50 1200A 1mv/A and 1mA/A output AC Current Clamp on CT

voltage output current clamp sensor

The round jaw design on the S50 Series AC current clamp on CT along with the high content nickel metal core makes them well suited for power quality applications where high accuracy and low phase shift along with wide frequency are important from 10Hz to 10MHz. Measurement range is 1mA to 1200A. The S50 is a general purpose 1200A AC current clamp on CT designed for use with DMMs, power loggers and energy meter calibration instruments that have a current input. It has a 1000:1 ratio and output of 1mA per amp or 1mV per amp measured in the jaw. The S50 clamp on CT has an integral 2.5m lead terminated. The rounded jaw design on this current clamp makes it well-suited for power applications where high accuracy 0.1% and low phase shift and wide frequency response are important. 



  • Power quality analyzer(PQA);
  • Power and harmonic meters;
  • Phase angle meter;
  • Energy meter calibrator;
  • Measuring around cable bundles;
  • Power meter;
  • Power load monitoring;
  • Data logging/recording;
  • Cable fault analysis;
  • Large industrial loads;
  • Power quality monitoring;
  • CT secondary current detection;
  • Waveform analysis(oscilloscopes meter);
  • Earth resistance meter;
  • Energy sub-meters;


  • Measurement range of 1mA to 1200A AC;
  • High precision 0.1% for current measurement;
  • Improved ergonomic design & easy operation;
  • High content permalloy core;
  • Frequency 10Hz-10MHz Bandwidth;
  • Holding wire diameter: φ52mm;
  • Conforms to EN 61010, 600V CAT III;
  • Low phase shift for power measurement;
  • Industrial design & beautiful appearance;
  • Designed for DMMs, recorders, loggers, oscilloscopes, power and harmonic meters;
  • UL, CE CNAS mark;


Electrical parameters
Ratio 1000: 1 , 2000:1, 1000:5 (customized)
Accuracy class 0.1%, 0.2%, 0.5%
Primary current 0 - 500A AC and 0-1000A AC
Signal output 1mV/A, 1mA/A
Secondary voltage 0 - 0.5V AC and  0 - 1V AC;
Secondary current 0-1A or 0-5A AC
Max. Cont. Input current 1200A
Load capacity ≤20Ω, standard 4Ω
Over voltage category CAT III 600V
Frequency range 10Hz-10MHz
Dielectric strength 3KV 50Hz/60Hz  at 1minute
Temperature range -40°C to +55°C
Output 2.5 meter cable with D01 or BNC connector
Max. voltage not insulated conductors 720 V
Standard EN 61010-1, EN 61010-2-032, EN 61010-2-031
IEC60044-1, & IEC61869-2, 600V CAT III
Installation clamp type
Range 10A, 100A, 1000A optional
Output mode lead output(2.5m)
Connector BNC, 4mm banana, signal cable(2 cores),customized
Accuracy (1000A Range)
0-10A ≤0.5%
10-100 ≤0.2%
10-1200A ≤0.1%
Phase Shift(1000A Range)
0-10A ≤0.5°
10-100 ≤0.2°
100-1200A ≤0.1°
Mechanical parameters
Dimensions (L x W x H) (mm) 105 x 218 x 30
Weight (g) 650
Holding wire diameter (mm) φ52
Max. jaw opening (mm) 52
Jaw color Red & Grey
Material PC+ABS, UL94 V0


Model Rate Current Max Current Secondary Current Coil Ratio Burden Resistance Accuracy
S50A5-100 100A 120A 5A 20:1 2.5VA 1%
S50A5-200 200A 240A 5A 40:1 2.5VA 0.5%
S50A5-300 300A 360A 5A 60:1 2.5VA 0.5%
S50A5-400 400A 480A 5A 80:1 2.5VA 0.5%
S50A5-500 500A 600A 5A 100:1 2.5VA 0.5%
S50A5-600 600A 720A 5A 120:1 2.5VA 0.5%
S50A5-800 800A 960A 5A 160:1 2.5VA 0.5%
S50A5-1000 1000A 1200A 5A 200:1 2.5VA 0.5%
S50A1-100 100A 120A 1A 100:1 customized 0.2%
S50A1-200 200A 240A 1A 200:1 customized 0.2%
S50A1-300 300A 360A 1A 300:1 customized 0.2%
S50A1-400 400A 480A 1A 400:1 customized 0.2%
S50A1-500 500A 600A 1A 500:1 customized 0.2%
S50A1-600 600A 720A 1A 600:1 customized 0.2%
S50A1-800 800A 960A 1A 800:1 customized 0.2%
S50A1-1000 1000A 1200A 1A 1000:1 customized 0.1%
S502-300 300A 360A 300mA 1000:1 customized 0.1%
S502-500 500A 600A 500mA 1000:1 customized 0.1%
S502-1000 1000A 1200A 500mA 2000:1 customized 0.1%
S503-800 800A 960A 400mA 2000:1 customized 0.1%
S503-1000 1000A 1200A 400mA 2500:1 customized 0.1%
S504-500 500A 600A 250mA 2000:1 customized 0.1%
S504-1000 1000A 1200A 250mA 4000:1 customized 0.1%
S50V1-1000 1000A 1200A 1V 1000:1 customized 0.1%
S50V2-1000 1000A 1200A 2V 1000:1 customized 0.1%
S50V4-1000 1000A 1200A 4V 1000:1 customized 0.1%
S50V5-1000 1000A 1200A 5V 1000:1 customized 0.1%
S50V10-1000 1000A 1200A 10V 1000:1 customized 0.1%
S50V03-300 300A 360A 300mV 1000:1 customized 0.2%
S50V05-500 500A 600A 500mV 1000:1 customized 0.2%
S50V1-500 500A 600A 1V 2000:1 customized 0.2%
S50V2-500 500A 600A 2V 2000:1 customized 0.2%
S50V4-500 500A 600A 4V 2000:1 customized 0.2%
S50V5-500 500A 600A 5V 2000:1 customized 0.2%
S50V10-500 500A 600A 10V 2000:1 customized 0.2%
S50V13-1000 10/100/1000A 12/120/1200A 1V 1000:1 customized 0.1%

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