0678D3150-02

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Fuses

Fuses are low resistance electrical devices used to protect electrical circuits from excessive current flow, helping to prevent failure of connected components and protecting equipment from fire damage. The 0678D3150-02 Fuse is a slow-acting type fuse that is used to protect motors and transformers from current overloads and short circuits.

Application Field

The 0678D3150-02 Fuse is commonly used in HVAC and industrial automated processes and equipment, especially those that run high-torque loads, such as electric motors and transformers. It is typically used in motor control applications, where a slow-acting fuse is required to allow overloads and short circuits to be cleared of the circuit slowly.

Working Principle

The 0678D3150-02 Fuse works on the principle of direct current over-current protection. It contains two elements: a metal lamina that is connected to a series of fusible links. When the current flowing through the circuit exceeds a pre-determined limit, it will heat the metal lamina. This causes the metal to expand and eventually break the fusible links, stopping the flow of current and protecting the circuit from further damage.

The rate at which the 0678D3150-02 Fuse will act is determined by the rate of heat transfer between the metal lamina and the fusible links. If the rate of heat transfer is too fast, the fuse may act before the motor or transformer is able to clear the overload or short circuit, resulting in a total loss of power to the system.

For this reason, the 0678D3150-02 Fuse is designed with a slow-acting heat transfer rate that is slower than the clearing rate of the motor or transformer, allowing an overload or short circuit to be cleared before the fuse will act and disconnect the circuit.

The 0678D3150-02 Fuse is an important component of motor and transformer control systems. It ensures that any electrical faults or overloads will be cleared safely without damaging the connected equipment or causing an electrical fire. It is an effective way of protecting sensitive equipment from failure or destruction.

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