Product Category


B3 Type Current Sensor


B3 series current sensor is a closed loop device based on the principle of the hall effect, 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 B3-50A B3-100A B3-200A B3-300A Unit
Rated current(Ipn) ±50 ±100 ±200 ±300 A
Measure range(Ip) 0—±75 0—±150 0—±300 0—±400 A
Turns ratio(Np/Ns) 1:1000 1:2000 1:2000 1:3000 T
Measure resister with±15V @±50Amax @±100Amax @±200Amax @±300Amax Ω
0(min)500(max) 0(min)245(max) 0(min)75(max) 0(min)52(max)
@±75Amax @±150Amax @±300Amax @±400Amax Ω
0(min)245(max) 0(min)118(max) 0(min)33(max) 0(min)20(max)
Coil resister 10 42 42 75 Ω
Rated output 50 50 100 100 mA
Supply voltage ±12,±15,±18 V
Power Consumption ≤20+IpX(Np/Ns) mA
Offset current @Ip=0     ±0.15 mA
Offset drift @ -40~+85℃    ≤±0.4 mA
Linearity @Ip=0-±Ipn     ≤0.1 %FS
Response time @50A/μS, 10%-90%     ≤1 μS
Galvanic isolation @ 50HZ,AC,1min      3 KV
di/dt >100 A/us
Bandwidth @ -1d      0~150 KHZ
Mechanical dimension(for reference only) Note
B3 Type 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) 40 g
Pulse current signal response characteristic Effects of impulse noise
B3 Type Current Sensor-heyi ( Input signal )

( Output signal )

B3 Type Current Sensor-heyi ( Output voltage )

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