4430.0991

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Circuit breakers are an important device used in electrical control systems that are designed to prevent overloading and the risk of electrical shock and fire. The 4430.0991 circuit breaker is one of the latest in the range of advanced circuit breakers that are suitable for domestic, industrial and commercial applications. This article aims to explore the application field and working principle of the 4430.0991 circuit breaker.

Application field

The 4430.0991 circuit breaker is designed to provide reliable and safe operation in a variety of electrical systems, including both indoor and outdoor applications. The circuit breaker is suitable for residential, commercial, and industrial applications, and can be used in single or three-phase systems. This breaker can be used as a main switch, or as an overload protection device in both single and three-phase systems. The 4430.0991 is designed to operate with an overload current range of 0.7 to 10A.

The circuit breaker is designed to provide reliable automatic switching for overcurrent protection. It can be used in a wide range of directly connected systems, such as lighting, heating, motor control and power supplies. The 4430.0991 is certified to meet both DIoP and EN60947-2 international standards. The breaker also features an adjustable instantaneous trip setting that can be set to a range of 0.7 to 5A, providing an accurate protection level. The 4430.0991 is also suitable for use in Type B and C residual current devices.

Working Principles

The 4430.0991 circuit breaker is a thermal-magnetic circuit breaker that is designed to protect against both short circuit and over-current faults. The breaker works by disconnecting the power supply when the current reaches a trip level, which is set at the time of installation. This trip level can be changed to provide a suitable protection level for the system.

The breaker works by sensing the current running through the load and detecting when it reaches a trip level. When the trip level is reached, the circuit breaker will disconnect the power supply, thereby preventing further damage to the system. The breaker also features a thermal setting which will cause the breaker to trip quickly when a short circuit fault is detected, providing fast overcurrent protection. The thermal setting is adjustable, enabling the user to set the trip level according to the application.

As well as providing overcurrent protection, the circuit breaker also acts as a safety device to prevent accidental shocks and fire caused by overloads or short circuits. When the breaker trips, it will disconnect the power supply, preventing current travelling further into the system and reducing the risk of electrical shock or fire.

The 4430.0991 is a robust and reliable circuit breaker that has been designed to perform to the highest standards. It’s a reliable choice for any domestic, commercial or industrial electrical system, providing reliable and effective overcurrent protection.

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