3120-F523-P7T1-W04D-20A

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Introduction

A Circuit Breaker is a safety device that is designed to protect electrical circuits from overload and short circuits, by disconnecting the circuit when a prescribed amount of current is exceeded. The 3120-F523-P7T1-W04D-20A Circuit Breaker is a type of circuit breaker designed for use in higher voltage applications and is typically used for medium-voltage applications such as power distribution panels and motor control centers. This article will discuss the application field and working principle of the 3120-F523-P7T1-W04D-20A Circuit Breaker.

Application Field

The 3120-F523-P7T1-W04D-20A Circuit Breaker is designed for medium-voltage applications, such as power distribution panels and motor control centers. The breaker is rated at 3120A and is suitable for use in systems with voltages up to 4160V. The breaker features an instantaneous trip unit, as well as adjustable long-time and short-time trip settings, making it suitable for a wide range of applications from residential to industrial.

Working Principle

The 3120-F523-P7T1-W04D-20A Circuit Breaker functions by breaking the circuit when the current exceeds the rated working value of the circuit breaker. The breaker contains two main components: a contact system and a tripping mechanism. The contact system consists of two sets of contacts, a fixed contact and a moving contact. The fixed contact is directly connected to the external line, while the moving contact is electrically connected to a trip actuator. The trip actuator contains a set of coils or magnets, which when energized will attract the movable contact and open the circuit.

The tripping system is responsible for sensing the amount of current passing through the circuit and initiating the opening of the circuit when the current exceeds a preset value. The tripping system is often referred to as the "protection system," as it is the device that is responsible for the circuit\'s protection. The protection system may consist of a time delay relay, a thermal overload relay, and/or a current transformer.

Conclusion

The 3120-F523-P7T1-W04D-20A Circuit Breaker is a type of circuit breaker designed for use in higher voltage applications and is typically used for medium-voltage applications such as power distribution panels and motor control centers. The breaker is rated at 3120A and is suitable for use in systems with voltages up to 4160V. The breaker features an instantaneous trip unit, as well as adjustable long-time and short-time trip settings, making it suitable for a wide range of applications from residential to industrial. The breaker functions by breaking the circuit when the current exceeds the rated working value of the circuit breaker, utilizing a contact system and tripping system.

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