• RARA

Product Features

  • 4-terminal shunt resistor
  • Resistance options of 0.2mΩ and 1mΩ
  • Tolerances of ±0.05% to ±1%
  • TCR of ±10 ppm/°C
  • Power rating of 100W (on a suitable heat sink)
  • Temperature range from -55°C to +100°C


  • Power Control
  • Scientific Instrumentation
  • Test and Measurement


The UHPS Ultra high power precision 4-terminal shunt resistor series from RARA offers a power rating of up to 100W on a suitable heat sink, with a maximum current limit of 707A (resistance value of 0.2mΩ). The UHPS series is available with resistance values of 0.2mΩ and 1mΩ, tolerance options as low as ±0.05% and a maximum TCR of ±10 ppm/°C. Short-term stability as low as ≤±0.1% at maximum current load for 1 hour.

  • 4-terminal shunt resistor
  • Temperature range of -55°C up to +100°C
  • Maximum rated power of 100W (≤ +50°C)
  • Resistance options of 0.2mΩ and 1mΩ
  • Tolerances options of ±0.05% (A), ±0.1% (B), ±0.5% (D) and ±1% (F)
  • Maximum working current of 707A at 0.2mΩ
  • Dielectric withstanding voltage of 500V AC for 60 seconds at a maximum leakage current of 2mA
  • TCR of ±10 ppm/°C
  • Short-term stability of ΔR ≤±0.1% for 1 hour at terminal & copper flange temperature ≤+50°C

Typical applications for the UHPS series include:

  • High current sensing
  • High capacity battery management
  • Charge/discharge test equipment
  • Laboratory power supplies


RARA UHPS Series Specification Table

Temperature range-55°C to +100°C
Rated power100W (on a suitable heatsink)
Resistance values0.2mΩ / 1mΩ
Tolerance±0.05% (A) / ±0.1% (B) / ±0.5% (D) / ±1% (F)
Maximum working current707A (at 1mΩ)
Dielectric withstanding voltage500V AC for 60s (Max. leakage current 2mA)
Short-term stabilityΔR ≤±0.1% (for 1hr at terminal & copper flange temperature ≤+50°C)


Dimensions 21 x 70 x 60mm
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RARA UHPS Series Technical Library

RARA UHPS Series Resources

Product Datasheet


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Please be advised that due to the ongoing supply issues with raw materials affecting the global electronics industry, as well as an increase in orders received by our manufacturing partners, a large number of products are facing increased lead times in recent months. For the latest lead time and stock availability, please contact one of our engineers who will be happy to discuss lead times further and the potential for alternative parts.