Have you ever wondered what a mini circuit breaker is? They are unique breakers with a very wide range of uses for electrical purposes. The electrical switches that automatically turn off the flow of electricity when a problem is identified within the electrical circuits are called the circuit breakers. The MCBs are typically used in different electrical units of the small commercial premises, domestic residence and commercial premises. The MCBs are the ones that protect and control the electricity supply of several electrical circuits installed in these buildings. The electrical circuitry are protected from danger of damaging from the overcurrent conditions if and when ones should develop.

Housing of Mini Circuit Breakers and Their Work

Din rail of a miniature circuit breaker is a very wide metal-rail shaped just like a hat with cross section when breakers are typically mounted. Usually, the standard size of din rail is 35mm and the mini version measures 15 mm by 5.5mm, and the largest version can size up to 75mm wide. The MCBs are often single-pole breakers which are designed to be placed in a metal-looking cabinet that can house many piece in one place at the same time. Usually, the housing of mini circuit breakers come with a movable handle that comes out into 1 of 3 positions: tripped, on or off. Either automatically or manually, this switch or handle can actually be reset so that the normal operations of electricity can be resumed unlike the fuses which can only be used once and after which must be discarded.

Tripping mechanism of MCBs instantly respond to very high electrical overload current with magnetic trip or/and respond to the continuous over-current at the current’s lower levels, which don’t automatically trip the circuit breaker but can possibly cause a system damage if it is persisted. Mini Circuit Breakers are just the same on how a surge protector works, with its capability on thermal trip. A great example of a persistent low level flow of over-currents is during a very strong thunderstorm and the power keeps on blinking on and off. During this kind of situation, or when an overload or short circuit is perceived, the breaker will “break” the current flow in order to protect the electrical units system.

What is Impedance and how does it affect the electrical circuits?

The earth’s surface has varying degrees of electrical potential from one place to another, as well as under numerous physical conditions. A place on earth with high impedance has a greater risk of having shocks within a metal piece equipment. These kinds of changes in electric current are not strong enough to trip the mini circuit breakers but powerful enough to kill or harm a person. Leakage electric circuit breakers are used to sensitive event the small amounts of electricity lurking in a piece of metal equipment. Nowadays, along with MCBs, the ELCB are also used in order to ready for such situations. This kind of circuit breaker can detect any imbalance between a current leaking and energized circuit through a grounded body of a person to prevent potential lethal shocks from happening.