UPG6666-30771-1 Circuit Protection

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Circuit breakers are designed to protect electronic equipment, systems and networks from damage or destruction caused by excessive current, voltage or power. The UPG6666-30771-1 (hereafter referred to as the "UPG6666") is a three-pole circuit breaker that is specifically designed to protect against short circuit and overload current from three-phase power sources.

The UPG6666 is capable of switching loads up to 42 amps and features a tripping curve of IEC60947-2 and UL1077-1984 specifications. This makes it suitable for residential applications including air conditioners, heat pumps, HVAC systems, water heaters and swimming pool pumps. In addition, the UPG6666 has the capacity to be used in industrial applications for motor control, pump control and lighting control.

The working principle of the UPG6666 is based on a combination of electrical and mechanical elements. The electrical elements are provided by contactors, overload relays and current transformers. The mechanical elements are made up of springs, linkages and the toggle mechanism that provides the physical connection between the contacts. When the current passing through the contacts reaches a certain level, the switch will open the circuit to protect the connected load from excessive current.

The UPG6666 also features a bi-stable latch that prevents unintentional closing of the circuit. This ensures that the contacts remain in the open position until it is manually reset. Additionally, the device is equipped with a thermal trip unit that reacts to overcurrents in a fraction of a second to immediately disconnect the power circuit. This helps to reduce the risk of secondary damage to the connected load or motor.

The UPG6666 meets a wide range of safety requirements. It is UL certified and meets the safety requirements of IEC60947-2 and UL1077-1984. The body of the device is factory-built with insulating materials to protect against electric shock. Furthermore, the device features a manual reset button that can be pressed to manually reset the device in the event of failure.

In conclusion, the UPG6666-30771-1 is a three-pole circuit breaker designed for residential and industrial applications. It is capable of switching loads up to 42 amps and features a bi-stable latch and thermal trip unit for added safety. The device meets safety requirements of IEC60947-2 and UL1077-1984 and is equipped with a manual reset button.

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