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How Do Time Delay Fuses Work?

Ever heard of a time delay fuse? Turns out they’re much more common than you might think. They’re used for plenty of everyday devices that require short bursts of intense electricity.

If you’re unsure what they are or what they are used for, we got you covered. Keep reading to learn all you need to know about time delay fuses.

What Are Time Delay Fuses?

Time delay fuses are a unique type of fuse used in electrical appliances that get their name from how they function in comparison to other fuses. Time delay fuses, much like their name suggests, blows its fuse after a short delay.

A short electrical surge also happens right before the fuse blows. This process allows devices with high amounts of inductive overload to continue to carry on without blowing.

Fuses are present in almost every type of electrical appliance. They protect against fire and electrocution. When fuses are not able to handle repeated overloads in certain situations, they blow.

Time delay fuses can help in this situation. Let’s take a closer look at how they specifically function.

How They Work

Time delay fuses allow a small amount of electricity to flow before the fuse itself blows. In some instances, time-delay fuses are also known as slow blow fuses.

Just like a normal fuse, time-delay fuses have a burnout link but with an additional short connector and spring attached to them. The spring and fuse wire are soldered together.

This allows the fuse to hold up to 200% more electrical overload compared to traditional fuses.

The fuse allows small amounts of electrical current to flow through as long as the total amount is below the breaking point. Prolonged amounts of high overload end up melting the solder joint though, just like a normal fuse.

When to Use a Time Delay Fuse

Most of the appliances that use time delay fuses need a quick jolt of high energy to start but don’t require much energy to continue working. One of the best examples of these types of devices is motors.

Take an electrical motor for example. They require a large amount of electricity just to start up. Over time they require less energy.

A regular fuse will blow out completely after the motor starts. A time-delay fuse protects the machine from blowing out or causing any other harm.

Another device that requires time delay fuses is a fluorescent lamp. No other type of fuses can be used for these appliances since they can cause some potential harm.

Buying The Right Time Delay Fuses

There are plenty of different types of time delay fuses. Choosing the best one for electrical devices and appliances is imperative to maintaining both proper function and safety.

Listed below are just some of the most common types of time-delay fuses

  • 30 AMP time delay fuse
  • Dual element time delay fuses
  • Midget fuses
  • Class CC fuses
  • Class J & R fuses

And there’s much more. For more help with looking at the best options, visit https://baypower.com/electrical-distribution/fuses/time-delay.

More Help With Electrical Appliances

We hope you were able to learn much more about time delay fuses from this short post. As always, be cautious when handling electrical equipment as you run the risk of fire and electrocution.

If you’re interested in learning more about the ins and outs of electrical appliances, feel free to take a look at the tech section.

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