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Circuit Breakers

Circuit breakers are switching devices designed to protect electrical circuits from overload and short-circuiting by cutting off the power supply when an electrical fault occurs and before damage is done to costly electrical equipment. They are commonly found in residential and commercial settings and are capable of rapidly and automatically isolating any faulty wiring, while still allowing the installation to remain energised.

The 219-1-1REC4-52F-2-8-30 circuit breaker is a type of miniature circuit breaker (MCB) designed for use in domestic, light commercial and industrial applications including motor starters, lighting circuits, electrical control panels and distribution boards. It is designed to trip and cut off the electricity supply in the event of a short-circuiting or overload of current on the circuit.

How it works

When a circuit breaker is closed, a fixed contact is closed and the electricity flows freely. The MCB is designed to sense the current being drawn from the circuit and trip when the current drawn exceeds the rated current of the circuit breaker. It has an associated over-current protection device within its mechanism and is triggered when it detects a short-circuit or over-load on the circuit. When this happens, the over-current protection device opens the fixed contact and the circuit is no longer ‘live’.

In some cases, the current flowing through the MCB may be sufficient to cause it to trip even when the circuit is in normal operation, such as when a high intensity electrical appliance, such as a dishwasher, is connected to the circuit. In these cases, the MCB will trip, shutting off the circuit breaker’s power.

Advantages and Benefits

The 219-1-1REC4-52F-2-8-30 circuit breaker provides a number of advantages and benefits.

• It is a compact, lightweight device which is easy to install and maintain.
• It can be used with a range of current ratings to suit different types of circuits.
• It is designed to trip quickly when an overload or short-circuit occurs, thus preventing costly damage to equipment.
• It is a cost-effective and reliable method of protecting circuits against overload and short-circuiting.

The circuit breaker is a type of device which is used extensively in residential and commercial settings due to its effectiveness in preventing damage to electrical equipment caused by power surges, overloads and short-circuits. The 219-1-1REC4-52F-2-8-30 circuit breaker is a reliable and well-designed device which is capable of protecting electrical circuits against these sorts of problems, and is easy to install and maintain.

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