What is the trip circuit of circuit breaker?

by Joost Nusselder | Updated on:  July 24, 2021
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Compact and portable, a trip unit is made up of two components: the thermal overload protector and short circuit breaker. The former works to sense when there may be too much heat in the units for safe operation, while the latter sets out an electric current that can quickly stop if necessary. In order to keep these safeguards functioning at their best it’s important not only maintain but also test them on occasion!

A trip unit helps protect against electrical dangers by sensing dangerous malfunctions before they occur or even start; its job includes keeping track of temperatures around any device with high-powered wires as well as ensuring good contact between all parts so nothing breaks down due to overheating from our tools’ use over time.

What does trip mean on a circuit breaker?

When a circuit breaker trips, it has detected an electrical fault and shut itself off to prevent the wiring from overheating.

How does a trip circuit work?

When the circuit breaker is closed, a trip circuit works as follows. Electrified relay A closes contact A1 which in turn energizes and keeps NC contact open on relay C. Now if the breaker was to break for some reason, it would only take an instant before both B contacts were also electrified by electromagnet B2 causing them all three relays (A-C) to be deenergized shutting down power supply no matter what state of affairs had opened up prior!

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Joost Nusselder, the founder of Tools Doctor is a content marketer, dad and loves trying out new equipment, and together with his team he's been creating in-depth blog articles since 2016 to help loyal readers with tools & crafting tips.
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