P0721Q22CLRP

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P0721Q22CLRP is classified as a TVS – Mixed Technology device. It is used for protecting low voltage circuits from transients such as primary ESD, lightning or other circuits caused disturbances.

The core components of the device are a MOV or Metal Oxide Varistor and a Polymeric Positive Temperature Coefficient Device (PPTC). The MOV works by conducting excess voltages and currents away from the protected circuit while the PPTC device provides secondary protection by limiting the current when the voltage exceeds the clamping threshold of the MOV device.

The P0721Q22CLRP device is designed for single-phase AC applications and provides excellent protection against over-voltages and short circuits. It is capable of clamping transients up to 2000V @ 7A and it meets the requirement UL1449 4th Edition (Surge Protective Devices) Standard.

The P0721Q22CLRP application field is mainly in low voltage distribution systems for households and industrial applications ranging from 120V to 250V. It can be used for both residential and commercial applications, such as protection for lighting circuits, air conditioning systems, refrigerators, washing machines, etc. It can also be used in fire alarm systems, doorbells and lighting systems in hotel halls and conference centers.

The working principle of the P0721Q22CLRP device is to clamp excessive transient voltages and currents due to ESD, lightning or other causes. When excess voltage is applied to the device, the MOV will conduct the current away from the protected circuit, while the PPTC will limit the current flow. This way the device provides a dual protection, making it a reliable choice for protecting electrical circuits from damage.

The device is designed to be compact and is installed in the load side of the circuit, providing protection in a small-size package. It is superior to traditional surge protectors, as it has a lower leakage current which means better protection for sensitive electronics. It also has an increased service life thanks to its built-in thermal shutdown feature, which allows it to survive multiple high-energy transients without permanent damage.

The P0721Q22CLRP device is an effective and reliable solution for providing transient protection for low voltage circuit applications. Its metal oxide varistor and polymeric positive temperature coefficient provide a dual protection function, making it an ideal choice for protecting sensitive electronic equipment from damage caused by lightning or other circuit-caused disturbances.

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