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. 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 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. 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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Description Price Maximum Current Voltage Output Shunt Type Accuracy Minimum Temperature Maximum Temperature For Use With Series
RS Stock No. 205-9741
Mfr. Part No.CSM2F-8518-L100J01
BrandBourns
SGD23.384
Each (In a Pack of 50)
units
600 A 60mV Plate 5 % - - - -
RS Stock No. 886-2067
Mfr. Part No.YN01-02751BS000000
SGD48.84
Each
units
2 A 75mV Brass-Ended - - - Ammeter Kappa
RS Stock No. 886-2061
Mfr. Part No.YN01-03751BS000000
SGD48.84
Each
units
5 A 75mV Brass-Ended - - - Ammeter Kappa
RS Stock No. 205-9742
Mfr. Part No.CSM2F-8518-L100J01
BrandBourns
SGD31.96
Each
units
600 A 60mV Plate 5 % - - - -
RS Stock No. 823-3570
Mfr. Part No.3020-01103-0
SGD46.57
Each
units
500 A 50mV Brass-Ended ±0.25 % -40°C 60°C - -
RS Stock No. 257-313
Mfr. Part No.SHR30MA75
BrandHOBUT
SGD17.25
Each
units
30 mA 75mV Plate ±1.5 % - - - -
RS Stock No. 886-2089
Mfr. Part No.YN01-17751WS000000
SGD73.48
Each
units
100 A 75mV Brass-Ended - - - Ammeter Kappa
RS Stock No. 313-902
Mfr. Part No.SHB10A60
BrandHOBUT
SGD53.11
Each
units
10 A 60mV Brass-Ended ±1 % -20°C +40°C - -
New
RS Stock No. 212-0192
Mfr. Part No.GV7AS207
SGD167.57
Each
units
- - - - - - - TeSys
RS Stock No. 2508309355
Mfr. Part No.S50-050
BrandModutec
SGD53.74
Each
units
- - - - - - - -
RS Stock No. 2508935415
Mfr. Part No.06709
BrandSimpson
SGD139.46
Each
units
- - - - - - - -
RS Stock No. 2508309327
Mfr. Part No.S50-010
BrandModutec
SGD53.74
Each
units
- - - - - - - -
RS Stock No. 2508935437
Mfr. Part No.06715
BrandSimpson
SGD139.46
Each
units
- - - - - - - -