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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Omschrijving Prijs Maximum Current Voltage Output Shunt Type Accuracy Minimum Temperature Maximum Temperature For Use With Series
RS-stocknr. 823-3570
Fabrikantnummer3020-01103-0
€ 35,33
Each
Aantal stuks
500 A 50mV Brass-Ended ±0.25 % -40°C 60°C - -
RS-stocknr. 392-8406
Fabrikantnummer1700V3170
€ 23,69
Each
Aantal stuks
25 A 60mV Plate ±0.5 % - - - -
RS-stocknr. 257-307
FabrikantnummerSHR10MA75
FabrikantHOBUT
€ 12,00
Each
Aantal stuks
10 mA 75mV Plate ±1.5 % - - - -
RS-stocknr. 810-3270
Fabrikantnummer3020-01098-0
€ 24,00
Each
Aantal stuks
20 A 50mV Digital ±0.25 % -40°C +60°C - -
RS-stocknr. 313-788
FabrikantnummerSHR100A75
FabrikantHOBUT
€ 44,75
Each
Aantal stuks
100 A 75mV Brass-Ended ±1 % - - - -
RS-stocknr. 886-2070
FabrikantnummerYN01-04751BS000000
FabrikantSifam Tinsley
€ 31,00
Each
Aantal stuks
10 A 75mV Brass-Ended - - - Ammeter Kappa
RS-stocknr. 313-902
FabrikantnummerSHB10A60
FabrikantHOBUT
€ 36,90
Each
Aantal stuks
10 A 60mV Brass-Ended ±1 % -20°C +40°C - -
RS-stocknr. 886-2089
FabrikantnummerYN01-17751WS000000
FabrikantSifam Tinsley
€ 48,01
Each
Aantal stuks
100 A 75mV Brass-Ended - - - Ammeter Kappa
RS-stocknr. 257-363
FabrikantnummerSHR10A75
FabrikantHOBUT
€ 15,18
Each
Aantal stuks
10 A 75mV Plate ±1.5 % - - - -
RS-stocknr. 823-3589
Fabrikantnummer3020-01108-0
€ 28,79
Each
Aantal stuks
100 A 100mV Brass-Ended ±0.25 % -40°C 60°C - -
RS-stocknr. 257-357
FabrikantnummerSHR3A75
FabrikantHOBUT
€ 12,00
Each
Aantal stuks
3 A 75mV Plate ±1.5 % - - - -
RS-stocknr. 257-408
FabrikantnummerSHR20A200
FabrikantHOBUT
€ 14,75
Each
Aantal stuks
20 A 200mV - ±1 % - - - -
RS-stocknr. 501-310
Fabrikantnummer34330A
€ 144,10
Each
Aantal stuks
30 A - - - - - 34401A Series, 34405A Series, 34410A Series, 34411A Series, 3458A Series, L4411A Series -
RS-stocknr. 810-3267
Fabrikantnummer3020-01096-0
€ 27,49
Each
Aantal stuks
50 A 50mV Digital ±0.25 % -40°C +60°C - -
RS-stocknr. 810-3261
Fabrikantnummer3020-01097-0
€ 24,00
Each
Aantal stuks
5 A 50mV Digital ±0.25 % -40°C +60°C - -
RS-stocknr. 810-3273
Fabrikantnummer3020-01099-0
€ 24,00
Each
Aantal stuks
100 A 50mV Digital ±0.25 % -40°C +60°C - -
RS-stocknr. 257-379
FabrikantnummerSHR20MA200
FabrikantHOBUT
€ 12,00
Each
Aantal stuks
20 mA 200mV - ±1 % - - - -
RS-stocknr. 823-3576
Fabrikantnummer3020-01102-0
€ 35,33
Each
Aantal stuks
300 A 50mV Brass-Ended ±0.25 % -40°C 60°C - -
RS-stocknr. 810-3277
Fabrikantnummer3020-01101-0
€ 30,85
Each
Aantal stuks
200 A 50mV Digital ±0.25 % -40°C +60°C - -
RS-stocknr. 392-8399
Fabrikantnummer1700V3280
€ 25,70
Each
Aantal stuks
100 A 60mV Plate ±0.5 % - - - -