Current shunts are low resistance precision resistors used to measure AC or DC electrical currents by the voltage drop those currents create across the resistance. Sometimes called an ammeter shunt, it is a type of current sensor.
A wide range of precision shunts, designed for use with kilowatthour meters and other highcurrent applications where a high level of accuracy is required, is now available from Token Electronics.
The interchangeable shunts (FL) are used to multiply the measuring range of measuring instrument and designed for PCB and busbar mounting, are manufactured from electron beam welded copper and manganin, and have low temperature coefficients. Featuring low inductance values, shunts FL series can handle permanent currents of up to 10000A at voltage 75 mV.
FLQ54 type shunt is made of precision alloy board. It's copper terminals spot welded by silver alloy ensure extremely high electric capability. The construction provides a kind of excellent stability and high overloaded ability noninductive resistor, applied widely as current limited, current balance or sampling sense in communication system, electric equipment and autocontrolling electrical circuit.
The FL Series is available in bulk packaging and is RoHS compliant and lead free. For nonstandard technical requirements and special applications, contact us with your specific needs.
Download PDF Specification Low Resistance Precision Current Shunts.


Voltage (mV)  Rating Current (A)  Dimensions (Unit: mm)  High Current Bolt (mm)PC (Option)  Shunt Voltage Bolt (mm)PC (Option)  
a±1  c±1  b±1  c1±1  c2±1  H±1  S±0.5  d  d1  d2  
75  75~100  103  85  32  21.5  10  M8x352  M5x62  
75  150~200  115  85  22  21.5  6  M8x352  
75  250~300  125  100  26  21.5  6  M10x352  
75  400  125  100  38  21.5  6  M10x352  
75  500  125  100  45  21.5  6  M10x352  
75  600  125  100  62  21.5  6  M10x352  
75  750  125  100  76  50  21.5  6  M10x354  
75  1000  125  100  95  50  21.5  6  M10x354 


Voltage (mV)  Rating Current (A)  Dimensions (Unit: mm)  High Current Bolt (mm)PC (Option)  Shunt Voltage Bolt (mm)PC (Option)  
a±1  c±1  b±1  c1±1  c2±1  H±1  S±0.5  d  d1  d2  
75  1500  190  160  95  50  100  13  M12x604  M5x62  
75  2000  190  160  95  50  100  13  M12x604  
75  2500  190  160  110  50  100  13  M12x604  
75  3000  190  160  145  250  100  13  M12x604  
75  4000  190  160  195  250  55  100  13  M16x808  
75  5000  284  220  195  250  55  150  18  M16x808  
75  6000  284  220  210  250  80  150  18  M16x808  
75  7500  290  220  320  350  260  150  18  M16x8012  
75  10000  290  220  400  350  290  150  18  M16x8012 


Voltage (mV)  Rating Current (A)  Dimensions (Unit: mm)  High Current Bolt (mm)PC (Option)  Shunt Voltage Bolt (mm)PC (Option)  
a±1  c±1  b±1  H1±0.5  H2±1  H3±1  d  d1  d2  
75  5~75  120  100  20  10  15  20  M5x72  M4x62 


Voltage (mV)  Rating Current (A)  Dimensions (Unit: mm)  Mounting size (mm)  
L  B  H  C  C1  Bolt  
75mV  100A  130  14  30  85  M8  
75mV  200A  130  24  30  85  M10  
75mV  300A  130  30  30  100  M10  
75mV  400A  130  42  30  100  M10  
75mV  500A  130  52  30  100  M10  
75mV  600A  130  60  30  100  50  M10  
75mV  750A  130  77  30  100  50  M10  
75mV  1000A  130  95  30  100  M10 


Type  Dimensions (Unit: mm)  Style of terminal  
H max.  B  L  L1  
FLQ54A  37  18  3  3  6  
FLQ54B  60  30  5  5  6  
FLQ54C  32  15  3  3  2 
Type  Rated Current (A) 
Rated Voltage Drop (mV) 
Nominal Resistance (mΩ) 
Accuracy Class  Temperature Range (°C) 
Temperature Coefficient (ppm/°C) 
FLQ54A  30  50  1.6667  0.5  55 ~ +85  ±25 
FLQ54A  50  50  1.0000  
FLQ54A  60  50  0.8333  
FLQ54B  60  50  0.8333  
FLQ54B  75  50  0.6667  
FLQ54B  100  50  0.5000  
FLQ54C  30  45  1.5000  
FLQ54C  60  45  0.7500 
Test Items  Specification 
Rated Voltage Drop  50mV, 60mV, 75mV, 100mV. 
Accuracy Class  0.5% for 5~4000 A; 1% for 5000~6000 A 
Over Rating Capacity  120% of rated current for 2 hours. 
Ambient Conditions  Temperature: 40~+60°C; relative humidity:≤95% 35°C 
Giving Out Heat When Loaded  Not be more than 80°C at rated current of below 50A.; not be more than 120°C at rated current of 50A and over 50A. 
Capacity to Withstand Mechanical Force  It is capable of withstanding the transport bumping at acceleration of 70m/S^{2} and shock frequency of 80120 times/min for 5 hours. 
FL2    5A  50mV  F  p  




