APL111R-559-500

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Circuit breakers are among the most common and widely used components in electrical circuits, helping to control the flow of current, protect electrical components from being damaged, and provide safety for those operating equipment that incorporates them. The APL111R-559-500 is a circuit breaker manufactured by APL which offers all the same advantages and features of the traditional breaker while offering a number of additional benefits. In this article, we will explain the working principle of the APL111R-559-500 and its application field.

The APL111R-559-500 is a trip-free, dual-break system thermal-magnetic circuit breaker. The tripping time is determined both by the thermal-magnetic characteristics as well as the magnetic properties of the contacts. The thermal-magnetic break has two steps: first, current flow is detected and interrupted using a temperature-sensitive element, then, the connected contacts are magnetized, which helps to avoid permanent damage to the contacts.

The APL111R-559-500 has a wide application field. It is suitable for use in many different low-voltage applications, such as air conditioning systems, HVAC, motor control, UPS, lighting systems, fire protection systems, and many other industrial systems. It is also UL-listed for use in residential, commercial, and industrial applications. It is rated 600 volts AC, with a maximum continuous current of 500A.

The working principle of the APL111R-559-500 is based on thermal-magnetic protection. As current passes through the circuit breaker, it heats up the bimetal element which surrounds the contacts. When the bimetal element is heated beyond its predetermined threshold, it quickly moves to compress the contacts, thus interrupting the electrical connection. Simultaneously, the contacts become magnetized, which helps to prevent damage to the contacts from being caused by frequent and rapid cycling. This allows the breaker to remain in a safe and operational state.

In summary, the APL111R-559-500 is a trip-free, dual-break system thermal-magnetic circuit breaker. It is suitable for use in many low-voltage applications, including air conditioning systems, HVAC, motor control, UPS, lighting systems, fire protection systems, and many other industrial systems. In addition, the breaker is UL-listed for use in residential, commercial, and industrial applications. The working principle of the breaker is thermal-magnetic protection, which prevents the contacts from becoming damaged from frequent and rapid cycling. The APL111R-559-500 provides a reliable and efficient way to protect electrical components from damage and provide safety for those operating equipment that incorporates the circuit breaker.

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