Why we need circuit breaker?

Why we need Circuit Breaker?

The electrical fuse should initial observe a fault condition. In tiny mains and low voltage circuit breakers, this is often sometimes done at intervals the device itself. Typically, the heating or magnetic effects of the electrical current area unit utilized.

Circuit breakers for big currents or high voltages are sometimes organized with protecting relay pilot devices to sense a fault condition and to work the gap mechanism. These generally need a separate power supply, such as a battery, although some high-voltage circuit breakers are self-contained with current transformers, protective relays, and an internal control power source.

Circuit breakers might also use the upper current caused by the fault to separate the contacts, such as thermal expansion or a magnetic field. Small circuit breakers generally have a manual management lever to modify off the load or reset a tripped breaker, while larger units use solenoids to trip the mechanism, and electric motors to restore energy to the springs.

Relay Module

A relay module is usually wont to interface a low-current circuit to a higher-current circuit. As such, it’s terribly helpful in dominant appliances and alternative mains-powered devices mistreatment microcontrollers.

Basically, a relay is an electromagnetic switch. The input aspect could be a coil whereas the output aspect could be a switch magnetically connected to the coil. The Arduino relay module has a total of six pins: three on one side and three on another side.

On the lowest aspect, there are 3 pins that are signal, 5V, and ground. We will connect these pins with the Arduino. While on the opposite aspect, there are Tar Heel State (Normally close), C (Common) and therefore the NO (normally open) that are the output pins of the 5V relay. There, we will connect the output device. Relay modules are essential in industrial works. All these elements are available in the market all over the world.