219-3-8625-21 Circuit Protection

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Circuit breakers are electrical devices designed to help protect electrical circuits from damage caused by overloading or short circuiting. The 219-3-8625-21 is a type of miniature circuit breaker (MCB) and is designed to protect low-voltage installations. This type of circuit breaker is commonly used in residential and commercial buildings to protect from both overloads and short circuits.

The 219-3-8625-21 is of the thermal-magnetic type, which means that it has both a thermal and a magnetic switching element. The thermal element is a bimetallic strip that is heated up by the current flowing through the circuit, causing it to bend. The magnetic element is an electromagnet that is energized by the current flowing through the circuit, causing a mechanical switch to be actuated. Together, these two elements provide the protection against overload and short circuits.

The 219-3-8625-21 allows a certain level of overload current before tripping. This level of overload current is referred to as the "tripping current". The tripping current for this particular model is 5 Amperes. In the event that the current flowing through the circuit exceeds this limit, the thermal element will reach a critical temperature and cause the bimetallic strip to bend, thus cutting off the power to the circuit. The magnetic element will also actuate the mechanical switch, ensuring that the circuit is completely disconnected.

The 219-3-8625-21 is designed for use in low-voltage installations. This type of circuit breaker is most commonly used in single-phase and three-phase residential and commercial electrical systems. In addition, it can also be used in DC circuits, making it suitable for a wide range of applications.

The 219-3-8625-21 is able to detect a range of different fault conditions and react accordingly. In the event of an overload, the thermal element will cause the bimetallic strip to bend, disconnecting the circuit. In the event of a short circuit, the magnetic element will actuate the mechanical switch, disconnecting the circuit. This ensures that the circuit is disconnected as quickly as possible, minimising damage to the apparatus connected to the circuit.

The 219-3-8625-21 is an essential piece of protection for any low-voltage electrical system. Its efficient combination of thermal and magnetic switching elements provides reliable protection against both overload and short circuit conditions, ensuring that the electrical circuit and its components are protected from damage.

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