Shunts

A shunt is a precision resistor connected in parallel across a device which is used to measure both alternating and direct current by creating a low-resistance path. Learn more with our handy shunt resistors guide.

How does a shunt work?

Also known as an ammeter shunt or a current shunt resistor, a shunts low resistance creates only a small amount of voltage drop by using little energy in the process. By using Ohms Law equation, the voltage across the shunt is measured and used to calculate the current flow in amperes.

A resistor of accurately known resistance (usually a manganin resistor) is placed in parallel with the ammeter. The current is then divided so that only a small amount travels through the ammeter and the actual amperage can be directly measured.

Shunts applications

Shunts are diverse and capable of many uses within many different applications:

  • One of the uses of a shunt is within a renewable energy system such as wind turbines or solar panels. They are used to measure how much current is flowing in and out of the battery, or for knowing how much power is being generated.
  • If high frequency noise is an issue, a shunt with a capacitor

    can be used to redirect noise sending it to the ground before the signal reaches the circuit elements.

  • They can be installed within a DC disconnect enclosure with a negative conductor between the batteries and the inverter. Some systems also have multiple shunts when several inputs and outputs require monitoring.
  • Shunts can be used for overload protection in control devices such as battery chargers and power supplies. They can also be used in digital meters and coil panel meters for measuring current in DC.

Types of shunts

There are several different types of shunts such as, standard brass ended, compact brass ended, digital, plate type and wire type.


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Beskrivning Pris Maximum Current Voltage Output Shunt Type Accuracy Minimum Temperature Maximum Temperature
RS-artikelnummer 886-2089
Tillv. art.nrYN01-17751WS000000
VarumärkeSifam Tinsley
529,90 kr
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100 A 75mV Brass-Ended - - -
RS-artikelnummer 313-930
Tillv. art.nrSHR60A60
VarumärkeHOBUT
506,75 kr
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60 A 60mV Brass-Ended ±1 % - -
RS-artikelnummer 810-3261
Tillv. art.nr3020-01097-0
300,51 kr
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5 A 50mV Digital ±0.25 % -40°C +60°C
RS-artikelnummer 810-3270
Tillv. art.nr3020-01098-0
300,51 kr
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20 A 50mV Digital ±0.25 % -40°C +60°C
RS-artikelnummer 810-3267
Tillv. art.nr3020-01096-0
344,34 kr
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50 A 50mV Digital ±0.25 % -40°C +60°C
RS-artikelnummer 886-2073
Tillv. art.nrYN01-07751BS000000
VarumärkeSifam Tinsley
352,20 kr
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25 A 75mV Brass-Ended - - -
RS-artikelnummer 392-8412
Tillv. art.nr1700V3200
315,78 kr
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40 A 60mV Plate ±0.5 % - -
RS-artikelnummer 501-310
Tillv. art.nr34330A
1 555,00 kr
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30 A - - - - -
RS-artikelnummer 257-363
Tillv. art.nrSHR10A75
VarumärkeHOBUT
163,16 kr
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10 A 75mV Plate ±1.5 % - -
RS-artikelnummer 313-794
Tillv. art.nrSHR300A75
VarumärkeHOBUT
845,23 kr
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300 A 75mV Brass-Ended ±1 % -20°C +40°C
RS-artikelnummer 886-2092
Tillv. art.nrYN01-22751WS000000
VarumärkeSifam Tinsley
917,75 kr
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250 A 75mV Brass-Ended - - -
RS-artikelnummer 257-341
Tillv. art.nrSHR1A75
VarumärkeHOBUT
128,71 kr
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1 A 75mV Plate ±1.5 % - -
RS-artikelnummer 313-788
Tillv. art.nrSHR100A75
VarumärkeHOBUT
504,73 kr
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100 A 75mV Brass-Ended ±1 % - -
RS-artikelnummer 205-9744
Tillv. art.nrCSM2F-7036-L050J01
VarumärkeBourns
260,20 kr
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1 kA 50mV Plate 5 % - -
RS-artikelnummer 257-379
Tillv. art.nrSHR20MA200
VarumärkeHOBUT
128,71 kr
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20 mA 200mV - ±1 % - -
RS-artikelnummer 221-0273
Tillv. art.nr192S2165
VarumärkeSocomec
4 299,77 kr
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2.5 kA 100mV Brass-Ended - - -
RS-artikelnummer 886-2067
Tillv. art.nrYN01-02751BS000000
VarumärkeSifam Tinsley
352,20 kr
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2 A 75mV Brass-Ended - - -
RS-artikelnummer 392-8399
Tillv. art.nr1700V3280
326,37 kr
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100 A 60mV Plate ±0.5 % - -
RS-artikelnummer 886-2095
Tillv. art.nrYN01-24751WS000000
VarumärkeSifam Tinsley
944,24 kr
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400 A 75mV Brass-Ended - - -
RS-artikelnummer 163-8662
Tillv. art.nrHA030-1
VarumärkeMetrix
2 041,09 kr
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30 A 300mV Plate - - -