DC Ammeter Shunts


DC Ammeter Shunts are low resistance precision resistors used to measure electrical currents by the voltage drop those currents create across the resistance.

Power Rating : Watts (W) = Current (I2) x Resistance Value (R)

  • The heat produced is power measured in Watts (W).
  • Current shunts dissipate heat from the current flowing through them, when they get hot.
  • In practice current shunt is often rated to be used continuously at only 2/3 of their "rated current".
  • Since that heat can change their resistance and even permanently damage the shunt, so it is often given a power rating or a derating factor.

Calculate Current : Current (I) = Voltage (V) / Resistance Value (R)

  • By inserting a current shunt into a circuit to get the current you want to measure while the voltage dropped across the shunt.
  • Then knowing the resistance of the current shunt you can calculate the current by using Ohm's law.


Contact Us

Contact: Tom Tan

Phone: (86)-15602914508

Tel: (86)-755-28158718

Email: [email protected]

Add: 1st Floor, GUOYAO Industry Park, HUANGJIANG Town, DONGGUAN, GUANGDONG, China

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