Did you know a typical resistor lacks precision? When the current is too high for your ammeter, you risk damaging it. Are you looking for a solution?

A shunt resistor will quickly solve this issue in your electrical circuit. When you place a shunt resistor parallel to your ammeter, you can control for currents that run too high.

A shunt resistor is a device that helps you track your electrical current. Interested in learning more about this handy precision device? Keep reading for the ultimate guide to using a shunt resistor. 

What Is a Shunt Resistor?

This precision device is typically made out of brass. The shunt resistor is made up of terminal blocks soldered onto a molded base. 

The device will help you measure current. It will also ensure that the voltage is proportional to the current that passes through it. In order to decide which shunt resistor to buy, use a shunt resistor calculator.

Fill in your voltage and current values into the equation. From here you can solve to see which shunt resistor will best suit your situation. 

What Is a Shunt Resistor Used For?

A shunt resistor can be used when you need extreme precision. For example, battery monitoring is a common example. You can use shunt resistors to help you monitor battery current and power generation.

This will be necessary if you are using off-grid generators. The same goes for battery power you use in your cabin, emergency vehicle, or even for your forklift.

Other common scenarios where you’ll want to use one are for mining or welding operations.  In these scenarios, precision is key to running a safe operation. A shunt resistor will provide protection against overloading chargers and power tools.

What to Know Before You Buy a Shunt Resistor

You’ll want to do research to find a quality company. Look for a company that offers one-to-one customer service. You’ll want to know if they can make custom requests a reality.

Check for range in what they can offer you. For example, at shunts.com, you have options. If you have a specific mounting configuration, let them know.

They can build the resistor to meet your space requirements. However, if you need a run-of-the-mill shunt resistor, you can always buy a standard model. 

Shunt resistors range from 77-173 amps all the way up to 10,000 amps shunt resistors. You can choose from different sizes, which will also impact the pricing. A shunt resistor can range from one dollar up to around $300 depending on the complexity and size.  

Keep Things Running Smoothly With Shunt Resistors

Next time you need to measure and control high currents, you’ll know what to do. A shunt resistor will help you measure and control overloading.

Keep batteries, machinery, and mining operations safe. You can opt for a custom or standard shunt resistor to keep things running smoothly.

If you enjoyed this article, be sure to check out our Technology section for more helpful tips.