219-3-6391-004 Circuit Protection

Circuit Breakers

The 219-3-6391-004 is a circuit breaker designed for use in motor circuits to protect against overloads and short circuits. This circuit breaker is designed with an adjustable trip curve which allows the user to adjust the current level, at which the breaker will trip, based on the customer requirements.

The trip curve adjustment allows the user to set the appropriate level of protection for the motor that it is connected to. If the motor does not draw enough current to reach the trip setting level, the breaker will remain closed. Once the overload protection is set, the power to the motor will be disconnected when the current exceed the trip setting.

Application Field

The 219-3-6391-004 circuit breaker is typically used in commercial, residential, and industrial applications. It is most commonly used in motor circuits which require some type of overload protection. The breaker is used in applications from small to medium-sized motor applications such as pumps and air compressors. It is also used in motor starters and electric motors that are rated up to 400amps.

Working Principle

The 219-3-6391-004 circuit breaker works using the principle of a current-dependent trip function. This works by detecting a predefined current level, and tripping the breaker when the current reaches this level. This is done by using a magnetic coil that is wrapped around the circuit breaker’s electrical contacts. When the coil reaches a certain level of current, the contacts open and the power to the motor is cut off. This helps protect the motor and other parts of the electrical system from damage due to overloads or short circuits.

The trip setting of the breaker can be manually adjusted by the user to set the current level at which the breaker trips. This is done by using a dial on the breaker which corresponds to a certain setting on the trip curve. The higher the number on the dial, the higher the trip point will be.

The 219-3-6391-004 circuit breaker also includes temperature compensation which allows for the heating that occurs due to the current flowing through the breaker to be taken into account. This helps increase the accuracy of the trip point detection. This feature helps reduce false trips and helps ensure that the motor remains protected from overloads and short circuits.

The 219-3-6391-004 circuit breaker is a reliable and cost-effective solution for protecting motor circuits from overloads and short circuits. It is designed with an adjustable trip curve and includes temperature compensation, which allows it to provide reliable and accurate protection for motor circuits.