CC12H3.5A-TR Circuit Protection

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Fuses are an important form of protection for many electrical systems. Since they are intended to protect the electrical system from excessive currents, the fuses must be able to open quickly and reliably in response to a certain level of current. Fuses are particularly useful in safeguarding against power surges, preventing catastrophic fires caused by short circuits, and controlling the power flow into sensitive electrical systems. In this article, we will discuss the application field and working principle of the CC12H3.5A-Tr fuse.

The CC12H3.5A-Tr fuse is designed to be used in systems up to 12 Amps and has a voltage rating of 440VAC. It is a time-delay type fuse, meaning that a delay of 10-20s is introduced when the fuse reaches its interrupting point. This ensures that the fuse does not blow at a slightly high, but harmless, current. The CC12H3.5A-Tr fuse is commonly used in panel boards, distribution boards, AC control circuits, bus bar trunking systems, and surge protection systems.

The fuse\'s working principle is based on the Joule effect, whereby electrical energy is dissipated as heat when an electric current passes through a conductor. The CC12H3.5A-Tr fuse contains a metallic wire element inside a porcelain housing called a "fusible element," which is constructed from a special alloy. This special alloy has a melting point that is lower than the melting point of copper. When an electrical current with a certain intensity passes through the fusible element, the alloy quickly and reliably melts, breaking the electrical circuit.

The CC12H3.5A-Tr fuse also has a current limiting advantage that is beneficial in protecting delicate equipment, such as motors, from harmful currents. When an excessive current passes through the fuse, the fusible element quickly melts, thereby limiting the resulting fault current into the circuit. This protects the delicate equipment from high fault currents, which can damage the equipment or cause a fire.

The CC12H3.5A-Tr fuse is a versatile and reliable form of protection for all types of electrical systems. It is designed to be used in any system that requires a current rating of up to 12 Amps and a voltage rating of 440 VAC and offers a time-delay feature to help protect sensitive electronic equipment from being damaged by high initial current surges. The working principle of the CC12H3.5A-Tr fuse is based on the Joule effect, whereby a special alloy fusible element melts when the current exceeds a certain level, quickly and reliably breaking the electrical circuit and limiting fault current.

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