B201X Current Sensor


B201X series current sensor is a closed loop device based on the measuring principle of the hall effect and null balance method, with a galvanic isolation between primary and secondary circuit. It provides accurate electronic measurement of DC, AC or pulsed currents.

Directions for use:

  • When the current will be measured goes through a sensor, the current will be measured at the output end. (Note: The false wiring may result in the damage of the sensor)
  • Custom design in the different rated input current and the output current are available.


  • AC variable speed drives
  • Static converters for DC motor drives
  • Battery supplied applications.
  • Uninterruptible Power Supplies (UPS).
  • Switched Mode Power Supplies (SMPS).
  • Power supplies for welding applications.
Type B201X-10A B201X-20A B201X-30A B201X-50A Unit
Rated current(Ipn) 10 20 30 50 A
Measure range(Ip) 20 30 45 75 A
Turns ratio(Np/Ns) 1:1000 1:1000 1:1000 1:1000 T
Measure resister 960±0.1% 490±0.1% 306±0.1% 169±0.1% Ω
Rated output 10 20 30 50 mA
Coil resister 36 36 36 36 Ω
Supply voltage ±12,±15 V
Power Consumption ≤20+ IpX(Np/Ns) mA
Offset current @Ip=0        ±0.15 mA
Offset drift @ -40~+85℃      ≤±0.5 mA
Linearity @Ip=0-±Ipn       ≤0.1 %FS
Total precision  ≤±0.7 %
di/dt accurately followed >50 A /μS
Response time @100A/μ S,10%-90%        ≤1 μS
Galvanic isolation @ 50HZ,AC,1min       2.5 KV
Bandwidth @ -1db        DC~100 KHZ
Mechanical dimension(for reference only) Note
B201X Current Sensor-heyi 1. All dimensions are in mm.
2. General tolerance ±1mm.
3. Elucidation: 1:+15V 2: -15V 3:I0UT 4:NC
General date Value Unit
Operating temperature(TA) -40 to +85
Storage temperature(TS) -40 to +125
Mass(approx) (M) 26 g
Pulse current signal response characteristic Effects of impulse noise
B201X Current Sensor-heyi ( Input signal )

( Output signal )

B201X Current Sensor-heyi ( Output voltage )

    contact us

    24Hs online service   365Ds NON-Stop Production   20Ys Professional Manufacturers Professional designer and manufacturer of current transformer,cooperated with Siemens ,schneider Fuji electrical softbank LG samdsung.
    Company HEYI Electrical CO.,LTD Contact person Bethy
    Tel 86-13968747975 E-mail bethy@heyiele.com
    ADD Xinguang Ind.Zone, Liushi Town, Wenzhou, Zhejiang, China


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