PTCCL21H881FBE

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PTC Resettable Fuses are an innovative type of overcurrent protection products. In industrial, commercial and residential applications, PTC fuses provide superior performance over traditional mechanical fuses and thermal feeder protectors. The PTCCL21H881FBE is one such example, designed for DC circuits in appliance and consumer electronics.

The PTCCL21H881FBE is a self-healing, resettable PTC element with an integrated overcurrent protection fuse element in one package. It combines the ability to protect against high inrush currents while providing short-circuit protection. The typical DC hold current is 4A and the nominal temperature range is from -55° C to 125° C. This device makes an ideal choice for applications where high voltage and current are expected.

The main advantage of the PTCCL21H881FBE is its ability to trip and reset itself without the need for a user to manually reset it. This means that the device can be used in difficult to access areas. Additionally, it allows for fast tripping speeds that help reduce the risk of fire and electrocution.

The working principle of the PTCCL21H881FBE is quite simple. When a current passes through it, the PTC element will heat up to a predetermined temperature. At this temperature, the PTC element will trip, blocking any further current flow. This helps to protect the circuit and any other devices connected to it from damage.

After the PTC element has tripped, the device can be reset. This is done by applying a quick pulse of current clearly above the nominal current, which then cools down the PTC element and allows it to reset to its original state. Once reset, the device will again start to allow current flow, protecting the circuit and its components from further damage.

The PTCCL21H881FBE is ideal for applications requiring overcurrent and overload protection such as consumer electronics, cable harnesses, PSU, solar energy systems and motor protection. Its self-healing and robust construction makes it a reliable choice for long-term use in harsh conditions. With its low cost and easy installation, it provides cost-effective and efficient short-circuit protection.

In conclusion, the PTCCL21H881FBE is a reliable and robust, self-healing PTC element with overcurrent protection circuit housed in one package. It is ideal for applications requiring protection against inrush and overload currents. It helps protect circuits and its components from damage and helps reduce the risk of fire and electrocution. With its easy installation and low cost, it is a cost-effective solution for a variety of applications.

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