Before we start talking about the difference between these fuses, let’s talk about what they are exactly.

What is an HRC Fuse?

An HRC fuse (high rupturing capacity fuse) is one reasonable fuse, wherever the fuse wire carries a short circuit current in a very set period. If the fault happens within the circuit, then it blows off. The HRC fuse is created with glass, otherwise another chemical compound.

The fuse enclosure may be closed tightly to avoid the air from the atmosphere. The ceramic enclosure is made with a metal cap welded with melted silver wire at each side of the fuse, and its enclosure includes some space encircled by wire, otherwise a fuse element.

HRC fuse is consistent & it’s the feature that if it has a high fault current, break time is low. Similarly, if the fault current isn’t high, the break time is long.

What is an MCCB?

A moulded case circuit breaker (MCCB) is an electric safety tool used to defend the electric circuit from immoderate current, which could cause overload or a short circuit. With a current score of 2500A, MCCBs may be used for various voltages and frequencies with adjustable experience settings. Instead of miniature circuit breakers (MCBs), these breakers are used in massive scale PV structures for device isolation and safety purposes.

Below is a description that shows the differences between a fuse and a circuit breaker on the following basis.

Working Principle –

A fuse works on both the electrical and thermal properties of the conducting materials.
A circuit breaker works on the principle of electromagnetism and switching.

Reusability –

Only one fuse can be used at a time.
It is possible to use circuit breakers repeatedly.

Status Indication –

There is no indication in the fuse.
The circuit breaker gives an indication of the current situation.

Auxiliary Contact –

Auxiliary contact is not needed in the fuse.
An auxiliary contact is available in the circuit breaker.

Switching Action –

An ON/OFF switch cannot be used with a fuse.
In-circuit breakers ON/OFF switches are used.

Temperature –

Fuses are not affected by the ambient temperature.
Circuit breakers are affected by ambient temperature.

Characteristic Curve –

Due to the ageing effect, the characteristic curve shifts.
There is no shift in the characteristic curve.

Protection –

Fuse protection is limited to power overloads.
Overloads and short circuits can be prevented by a circuit breaker.

Function –

Detection, as well as an interruption, are provided in a fuse.
The circuit breaker interrupts only the flow of electricity. A relay system detects faults.

Breaking Capacity –

A fuse has a lower breaking capacity than a circuit breaker.
There is a high breaking capacity in a circuit breaker.

Operating Time –

The operating time of the fuse is very short (0.002 seconds).
The operating time in a circuit breaker is comparatively longer than the fuse time. (0.02 – 0.05 seconds)

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