219-2-3191-18 Circuit Protection

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Introduction

Circuit Breakers (CBs) are electrical safety devices designed to protect electrical systems from damage due to overload, short circuit or ground faults. The purpose of a circuit breaker is to sense an overload, short circuit, or ground fault condition and open the circuit to de-energize the circuit and protect the system from being damaged. The type 219-2-3191-18 circuit breaker is an example of an industry standard circuit breaker design.

Circuit breakers are classified according to their operating characteristics and capabilities. The type 219-2-3191-18 circuit breaker, for example, is classed as an air and vacuum activated, thermal magnetic Circuit Breaker. The type designation is used to describe the physical size, mechanical characteristics and electrical ratings of the Breaker.

Application Fields

The type 219-2-3191-18 circuit breaker is typically used to protect sources of electrical power such as switchgear, transformers, generators, motors, and other circuit components. It is also used in industrial, residential and commercial applications ranging from home wiring circuits to large power plant and power distribution centers.

The 219-2-3191-18 circuit breaker is designed to protect circuits and equipment from overloads and short circuits and has the capability to break or interrupt a circuit without sustained arcing or causing damage to the equipment or electrical components. The circuit breaker is also designed to trip or open the circuit in the event of a ground fault.

The breaker can be manually operated by flipping a lever or switch on the breaker. In addition, the breaker can be automatically operated by a thermal-magnetic tripping device, which senses overcurrent. This trip device responds to both thermal and magnetic elements and operates by quickly opening the breaker contacts when an overload or short circuit condition is detected.

Working Principle

The working principle of the type 219-2-3191-18 circuit breaker is based on thermal-magnetic tripping. When a fault current exceeds the designed current, the thermal element in the circuit breaker heats up. This heat causes the bimetal strip in the tripping device to bend and move, and the mechanical linkage begins to open the circuit breaker contacts. At the same time, the fault current flowing through the magnet associated with the tripping device produces a magnetic field, which produces an opposing force to the thermal element, thus accelerating the tripping of the breaker.

The thermal and magnetic tripping of the type 219-2-3191-18 circuit breaker makes it an ideal choice to protect sources of electrical power and other equipment in industrial, commercial and residential applications. The breaker provides significant protection from overloads, short circuits and ground faults. It also has the advantage of a very fast response time that quickly de-energizes the circuit when a fault is detected. This quick response reduces the likelihood of sustaining damage to equipment and other components.

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