FP125

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FP125 fuses, also known as Fast-Acting Fuses (FF), are electrical devices designed and manufactured to protect electrical circuits from overcurrent and overvoltage. Used in many applications, they have quickly become one of the most popular, reliable and trusted fuses in the market.

The FP125 fuse is a fast-acting fuse and has a minimum operating time of less than 1 second under normal conditions. It is mainly composed of a pressed shell and an inner detonation mechanism. It also contains a control tube filled with low melting point alloy, which forms the final detonation mechanism when a fault occurs. This fuse can only be used once and is permanently deformed after detonation under overload current. The following are some common applications.

Motor Circuit Protection

An FP125 fuse is ideal for motor circuit protection because it provides the necessary current limitation to protect the motor and its circuit in the event of an overload. By limiting the current in the circuit, the fuse helps to protect both motor and circuit from potential damages and hazards due to prolonged overloads. It also works by quickly disconnecting the circuit when the overcurrent limit is reached.

Industrial Instrumentation

FP125 fuses are often used in industrial instrumentation due to their fast-acting nature and protection against overcurrent. This is especially important in applications where a drastic current flow needs to be managed. They can be used to protect instruments such as pressure gauges, temperature controllers, and other devices from potential damage due to overcurrent.

Automotive Electronics

FP125 fuses are also popular in automotive electronics. They are used to protect both the components and the whole electrical system from potential damage due to overcurrent. They are usually connected in series with the power source to protect the components from any accidental power surges. They are also used in conjunction with relays to reduce the risk of overcurrent.

Electronic Equipment

FP125 fuses can also be used in electronic equipment. By limiting the current, they help protect the electronic equipment from damages due to accidental overcurrent. They are especially useful in applications where the power consumption is not known, as this helps to avoid potential damages that could occur due to an overcurrent.

Working Principle

The working principle of FP125 fuses is based on the time-delay property of the fuse itself. When the current being applied to the fuse exceeds the rated current, the low melting point alloy inside the control tube starts melting and serves as a switch. This causes the switch to open and disconnect power from the circuit. This will then stop further increase in current and protect the circuit from any potential damage.

FP125 fuses are widely used in a variety of applications and they are extremely reliable in providing protection against overcurrent and overvoltage. They provide fast-acting protection and have a wide variety of uses. They are a popular choice for motor circuit protection, industrial instrumentation, automotive electronics, and electronic equipment.

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