PPTC321LFBN-RC

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Application Field of PPTC321LFBN-RC

The PPTC321LFBN-RC is a rectangular connector which belongs to the headers, receptacles, female sockets of connectors. It’s widely used in cars because of its excellent performance of current shunt protection and a variety of size. The main application are for connecting current power supply lines, low current control lines and small signal lines. It can meet requirements of waterproof, dust-proof, fireproof, vibration-proof in extreme environments and has long service life.

Working Principle of PPTC321LFBN-RC

When part of the circuit is overloaded, PPTC321LFBN-RC should be used to protect the main circuit of the battery from being damaged. This is done by shorting the external circuit using a built-in PPTC (polymer-based positive temperature coefficient) resistor composed of conductive particles in organic polymers. In normal use, the high resistance state prevents the current from flowing. However, when the current increases to a certain level, the PTC resistor will cause a temperature rise. The heat generated will cause the material to shift from a high resistance to a low resistance state, allowing the main circuit to be quickly shorted. This process usually takes a few milliseconds.

PPTC321LFBN-RC is a series of plastic circuit breakers form AVX Corporation. These components are designed for automotive, industrial and consumer applications. These components have a wide range of current interrupting capacity up to 1000 amperes.

These devices have three terminals: a common terminal, a sensing terminal, and a control terminal. The sensing terminal is connected to the main circuit with no interruption. The potential between the sensing and control terminals determines whether the part is in the high or low resistance state. In the low resistance state, current will flow from the common terminal to the control terminal.

The design of PPTC321LFBN-RC provides overcurrent and overvoltage protection for electronic devices. This prevents damage to the electronic components caused by short circuits, current leakage, overload and other similar conditions. It also reduces the risk of electrical fire and power surge.

PPTC321LFBN-RC has the advantage of being simple and reliable. It should be used in electric vehicles, automobiles, motor controls, appliances, power supplies, battery related products and more.

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