Difference between circuit breaker and isolator

Introduction

In the world of electricity, there are different elements that are essential to guarantee the safety and correct functioning of electrical circuits. Two of them are the circuit breaker and the isolator. Although both have important functions, they are not the same and it is essential to know the difference between them.

What is a circuit breaker?

A circuit breaker is an electrical device that is responsible for protecting electrical circuits from short circuits and overloads. That is, it acts as a switch that disconnects the electrical circuit if a high current flow is detected, thus preventing damage. in the system.

Types of circuit breakers

• Magneto-thermal circuit breaker: it is the most common type and works through a system of thermistors and electromagnets.
• Differential circuit breaker: also known as Residual Differential Circuit Breaker (IDR), it detects variations in electric current.
• High voltage circuit breaker: used in high voltage electrical installations to protect transmission lines.

What is an insulator?

An electrical insulator is that element that prevents electric current from flowing through it. That is, its function is to physically isolate or separate an electrical circuit from another or from elements external to it.

types of insulators

• Porcelain insulators: they are the most common and are used in low and medium voltage electrical installations.
• Glass insulators: used in high voltage electrical installations.
• Polymer insulators: They are more resistant to corrosion than porcelain insulators and lighter, making them easier to transport and install.

Differences between circuit breaker and isolator

Although both elements have important functions in an electrical circuit, there are some fundamental differences between them:

• Function: while the circuit breaker is responsible for protecting the electrical circuit from overloads and short circuits, the isolator physically separates it from the rest of the circuit.
• Location in the circuit: the circuit breaker is located in the same electrical circuit, while the isolator is located between two circuits or elements of a circuit.
• Material: The circuit breaker is made of conductive materials, while the insulator is made of non-conductive materials, such as porcelain or glass.

In conclusion, both the circuit breaker and the insulator are fundamental elements in an electrical circuit, but they fulfill different functions. The circuit breaker protects the electrical circuit from short circuits and overloads, while the isolator physically separates it from the rest of the circuit. It is important to know the difference between both elements to guarantee a safe and efficient electrical installation.