Precision Current Shunts

When you like a bit more


To work with currents up to  30A we have made special resistors which fulfil our quality requirements. Excellent long term stability, very low self heating and a maximum of independence from environmental influences define these resistors as well. All that effort so you can concentrate yourself onto your work and your measurement instrument just do what they are meant to to - their work.

Hochlast-Referenzwiderstand

Stable, robust and very precise


For current measuring shunts we apply the very same requirements as on all of our products. You need to be able to trust them without compromise. To reach this goal, we equipped our Precision Current Shunts with a very low yearly drift of typ. 3 µΩ/Ω per year. Together with an excellent, low temperature coefficient, you can obtain the most precise measurement results possible. As the self heating effect is very low, you do not need to bother about this effect for currents up to 30A.

Platzhalter

Perfection at every detail


The binding posts of this resistors are our trusted Low Thermal Binding Posts where it makes sense. The current connections feature some proper high current binding posts. A special thermal management lets unwanted heat not even arise. In summary this current shunt is one of the most stable high load resistors, money can buy.

Messingblock in der Fertigung
Platzhalter

Applications


At every place where it is required to measure currents up to 30A , the wekomm precision current shunt should be the first choice. Independent institutes have compared the wekomm resistor with products made big names companies. In every case, our resistor was found to be better and more stable.

Platzhalter

Typical product specifications

model

nominal value
Ω

calibration precision
µΩ/Ω

temperature coefficient
µΩ/Ω per K

stability

µΩ/Ω per year

maximum voltage (Volt)

RS9010A-R1 

RS9010A-R01

RS9010A-R001

*1

*1

*1

0.1Ω

0.01Ω

0.001Ω

< 20.0

< 20.0

< 20.0

20

20

20

0.25

0.1

0.025

2.5

10

25

*1 Depending on CalLab

  • Aging/Drift: < 1 µΩ / Ω per year (independend from environmental influences)
  • Temperature coefficient: < 0,3 µΩ / Ω per K
  • repeating error (hysteresis): 30°C – neglectible within 20°C to 30°C
  • wide operation range from  20°C to 30°C
  • no special requirements regarding temperature
  • mechanically insensitive and completely immune to ambient pressure changes
  • No oil bath required
  • custom versions possible
  • Standard size: W 16 x H 10 x D 11,5cm
  • Weight: ca. 4,5 kg
  • Made in Germany

maximum current
(A)

For more information get the datasheet here

Platzhalter
Optimal, geschützter Transportkoffer

Accessories


For optimum protection while transporting we recommend our transportation box for two resistors.


Additional accessories are low thermal cables in two variants:


2-wire

4-wire

Platzhalter

Where to buy


For all inquiries or order please contact us directly or one of our distributors. You will find the relevant information here. We are looking forward hearing from you.

Resistance Standard

Imprint  | General Terms  | Privacy |  Contact / Where to find us

© wekomm engineering GmbH 2025