219-3-21428-3

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Circuit breakers are a very common and important electrical component in any electrical system. They are used to protect electrical systems from being overloaded and from short circuiting. The type of circuit breaker known as a 219-3-21428-3 is a type of molded-case circuit breaker used in industrial applications.

This type of circuit breaker utilizes a trip mechanism typically activated by an excessive current. The main working principle of this circuit breaker is when a trip is commanded by the internal circuit, a mechanical system is activated, and the contacts in the breaker open, disconnecting the circuit from the power supply. Once the current is reduced to a safe level, a reset feature is provided and once the reset feature is activated, the circuit breaker resumes operation.

The 219-3-21428-3 circuit breaker is particularly suited for use in industrial applications due to its heavy duty design and inherent ruggedness. It is designed for frequent operation and is capable of handling high current loads. Typical applications are for machines and equipment, often located in harsh, dusty environment. The advantages of this type of circuit breaker are the high degree of overload protection, greater safety, and ease of installation and maintenance.

The 219-3-21428-3 circuit breaker is typically mounted in a panel, and its connection is made via a single phase supply cable. The external wiring connection should comply with the requirements of the National Electrical Code (NEC). Depending on the application, the circuit breaker may be provided with an overcurrent relay for additional overload protection (O/P protection).

In summary, the 219-3-21428-3 circuit breaker is a type of high duty moldedcase circuit breaker primarily designed for industrial applications. It utilizes a trip mechanism triggered by an excessive current and it is capable of handling high current load. This type of circuit breaker provides high protection against overloads, better safety and easy installation and maintenance. It must be mounted in a panel using an appropriate NEC compliant wiring connection, and may also be provided with an additional O/P protection, depending on the application.

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