219-3-4788-5

Circuit breakers are ubiquitously used in many areas of electrical engineering, from homes and offices to industrial and commercial buildings. A circuit breaker is a device employed to reduce the chances of an electric shock, by cutting off the electric current that flows through the circuit when a fault or over-current situation occurs. It is essentially a form of electrical protection device, designed to prevent over-heating, fire hazards, and other potential damages to electronic devices in the circuit.

Model 219-3- 4788-5 is an IEC/UL60730-1 and UL489 listed Circuit Breaker that works under both overheating and over-current protection. This device is particularly useful for protecting motors or other large electrical apparatus against short circuits, since it has an adjustable overload release specification that is set to the particular application. This circuit breaker is designed for both single-phase and three-phase applications, and is capable of breaking short-circuit currents of up to 5kA or 6300 Amps.

Within the circuit breaker, there is a pair of bimetallic strips which serve to protect the circuit against both overheating and over-current. When the current is high or the temperature of the bimetallic strips rise to a certain level, the bimetallic strips deform due to the thermal expansion and then separate, thus interrupting the electrical flow. At the same time, an internal relay causes the current to be cut off, so that the circuit is no longer live.

The construction of the IEC/UL60730-1 and UL489 rated 219-3-4788-5 model makes it suitable for applications such as HVAC systems, electrical pumps, lighting, and motor control. Its adjustable settings ensure flexibility when dealing with various types of industrial and commercial applications. The 219-3-4788-5 circuit breaker is also shock resistant and offers a high level of safety, thanks to its built-in fail-safe mechanism. This mechanism consists of a temperature limit switch, which will open the circuit in the event that the temperature exceeds a certain set limit.

In summary, the 219-3-4788-5 Circuit Breaker is designed to provide protection for electrical systems, by quickly cutting off the power supply when a fault or overload occurs. It has adjustable overload protection settings, making it suitable for various industrial and commercial applications. Its fail-safe mechanism ensures superior shock resistance and safety, while its robust construction makes it durable and reliable.