Difference Between Circuit Breakers and HRC Fuses

Electric devices play a central role in our everyday lives, and even though they keep advancing, the fundamentals that keep them running cannot be replaced. Having the system run smoothly is very important and helps with the entire process.

During overloads or short circuits, the circuit may experience a heavy current flow due to unstable conditions. Heavy currents can damage a device or a circuit and pose an electrical safety risk.

Electrical power feeds are divided into subsidiary circuits with protective fuses or circuit breakers for each circuit in a common enclosure by a distribution board. Circuit breakers and HRC fuses are both protection devices that prevent the overloading of electrical circuits. Even though they interrupt the flow of electricity, their approach to achieving their goal is different.

Nowadays, there are many different fuses available in the market that are now needed for everything, so be sure you select high-quality fuses that work smoothly; here’s more information on HRC fuses and their functioning:

Differences Between the Devices:

  • Materials Used In HRC Fuses And Circuit Breakers:

In general, HRC fuses consist of glass, and the case of an HRC fuse is tightly sealed so that no air can enter inside. Silver wires encircle the metal caps at the corners at both ends.

In contrast, the circuit breaker, which operates in closed positions, is commonly copper.

  • Working Principles Of HRC Fuses And Circuit Breakers:

HRC fuses have a high rupturing capacity and can carry a short circuit for a certain period. It’s important to remember that if the fault is not fixed, the circuit breaker will melt and cut off the electricity supply but won’t blow off once it has been repaired.

In contrast, circuit breakers have an internal switch mechanism that trips when there is an unsafe surge of electricity instead of the metal piece that melts when overheated. If the HRC fuse has a high fault current, its break time will be short, but the break time will be longer if the fault current is not high.

Circuit breakers work in two different ways, first using an electromagnet and then a bi-metal strip. Circuit breakers allow current to flow from a bottom terminal to an upper terminal across a strip when they’re activated. The magnetic force of the strip can throw a metal lever in the switch mechanism when the current reaches unsafe levels.

  • Speed of Action In HRC Fuses And Circuit Breakers:

Circuit breakers are slower compared to HRC fuses. They usually trip at 20ms, while HRC fuses typically trip at 2ms.

  • Cost Of HRC Fuses And Circuit Breakers:

Generally, HRC fuses are economical compared to circuit breakers.

  • Replacement & Reusability Of HRC Fuses And Circuit Breakers:

HRC fuses need to be replaced after every operation, but you can reuse circuit breakers.

  • Post-Operation In HRC Fuses And Circuit Breakers:

HRC fuses need to be manually replaced after every operation. Circuit breakers don’t need replacement, as you can reset them quickly after every operation.

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