8345-SR0018-20A Circuit Protection

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A circuit breaker is a safety device designed to protect an electrical circuit from damage caused by overload or short circuit. The 8345-SR0018–20A is a circuit breaker designed to provide reliable overload and short circuit protection for industrial and marine applications. This discussion will describe the application field and working principle of the 8345-SR0018–20A.

The 8345-SR0018–20A circuit breaker is designed for single phase AC/DC electrical systems of up to 575VAC or 250VDC. It is suitable for a variety of applications, including residential, commercial, industrial and marine. The breaker can be used to protect electrical systems against overload, short circuits, or even lightning strikes. The breaker also features a single-pole design, allowing for easy installation and maintenance.

The 8345-SR0018–20A is built with an experimental three-pole overload thermal-magnetic mechanism. This thermal-magnetic mechanism is designed to differentiate the causes of an electrical fault and provide different levels of protection depending on its origin. In the event of a short circuit current, the breaker will trip almost immediately, while in the event of an overload condition, the breaker will trip after a delay period allowing time to disconnect faulted parts of the system or locate and correct the problem.

The 8345-SR0018–20A is built with a bimetallic strip whose thermal characteristics cause it to deform as it heats up. When the system load exceeds a certain threshold, the strip warms up and flexes, causing the plate it is attached to move and trip the switch. The switch mechanism then causes the breaker to open, stopping the current flow and protecting the system.

The 8345-SR0018–20A is also equipped with a magnetic trip mechanism. This is designed to sense changes in current and react accordingly to protect the system. The breaker is designed to trip within a fraction of a second whenever a short circuit is detected. This helps to prevent catastrophic damage to the system.

The 8345-SR0018–20A circuit breaker is a reliable, cost-effective and easy to install safety device that can provide a high level of protection for single phase AC/DC electrical systems of up to 575VAC or 250VDC. Its thermal-magnetic mechanism helps to distinguish between different fault levels and provide different kinds of protection, while its bimetallic strip and magnetic trip mechanism help to react instantly to overloads or short circuits, ensuring the system is protected from catastrophic damage.

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