UPG112-4949-1 Circuit Protection

Series:	UPG
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Breaker Type:	Magnetic (Hydraulic Delay)
Moisture Sensitivity Level (MSL):	--
Current Rating:	--
Actuator Type:	Lever
Illumination:	--
Illumination Voltage (Nominal):	--
Mounting Type:	Panel Mount

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Introduction

A circuit breaker is an electrical device that automatically disconnects an electrical circuit during an overload or short-circuit condition. Circuit breakers provide an effective and efficient way to protect electrical systems from excessive current overloads that can cause damage to person and equipment. In this article, we will be exploring the UPG 112-4949-1 circuit breaker and its application field and working principle.

What is UPG 112-4949-1 Circuit Breaker?

UPG 112-4949-1 is a thermal-magnetic circuit breaker manufactured by the UPG brand. It is typically used for medium voltage AC and DC applications with high inrush currents. The circuit breaker can be applied to motors, transformers, and other electrical equipment to protect them from power surges and other dangerous conditions such as overloads, short-circuits, and ground-fault conditions.

Application Fields

UPG 112-4949-1 can be used in multiple application fields. It is ideal for high-voltage applications and for applications with loads that present large inrush currents or heavy starting currents. It is also suitable for regenerative systems that draw energy from the network, such as cranes, elevators, roller shutters, etc. It is also suitable for processes that involve frequent stopping and starting. Furthermore, due to its ability to remain cool even when exposed to high temperatures, it is also suitable for applications in areas with hot ambient temperatures.

Working Principle

UPG 112-4949-1 has a thermal-magnetic operation. It works by measuring the instantaneous current flowing through it. This current is converted into thermal energy by the thermal element, which is proportional to its resistance. When the instantaneous current reaches a certain threshold, the circuit breaker trips. This threshold can be adjustable by changing the resistance of the thermal element.The circuit breaker also has a magnetic element, which measures the current through a magnetic field. The magnetic element is used to detect short circuits. When the magnetic field strength reaches a certain threshold, the circuit breaker trips immediately, thus preventing any further damage caused by the short-circuit.

Advantages

UPG 112-4949-1 circuit breaker is resistant to all weather conditions and can withstand high temperatures. This makes it suitable for applications in areas with hot ambient temperatures. Additionally, due to its low voltage drop, it offers better performance compared to other circuit breakers. Furthermore, it is highly reliable, as it has an adjustable tripping threshold that can be adjusted according to the application’s specific requirements.

Conclusion

UPG 112-4949-1 is a thermal-magnetic circuit breaker ideal for high-voltage applications. It is resistant to all weather conditions and can withstand high temperatures. It is suitable for applications in areas with hot ambient temperatures and for applications with loads that present large inrush currents or heavy starting currents. Additionally, it is highly reliable and adjustable, allowing for tailored performance according to the application’s specific requirements.

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