1210L150/12WR

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PTC resettable fuses, also known as polymeric tape current interrupters (PTCIs) are fuses that contain a PCB trace heating element that will open when exceed a predetermined current threshold. This prevents further damage due to an overload or short circuit, allowing normal operation to resume upon resetting. The 1210L150/12WR is a particular type of resettable fuse, specified for general-purpose protection.

1210L150/12WR fuses are designed for applications that require overcurrent protection due to its small size and high current-handling capability. This type of fuse is typically used in circuit protection for telecommunications equipment, industrial machinery, consumer electronics, and automotive applications. It is especially beneficial for circuit protection in space-limited applications since it is two-thirds the size of traditional glass body fuses.

Working principle of the 1210L150/12WR PTC resettable fuse lies in its trace heating element. This element is made of a temperature-sensitive PTC material that is integrated into the fuse body, and an overcurrent will cause it to heat up and interrupt the flow of electricity thus protecting the rest of the circuit. The trace heating element exhibits positive temperature coefficient, which means that the resistance of the element will increase with every temperature increase.

The resistance will increase to an extent that it is able to interrupt the circuit and return to a low resistance state when cooled to ambient temperature and reset. This will allow the circuit to continue functioning as normal. The resettable fuse is able to protect the circuit in a manner that is much more effective than a traditional thermal fuse due to its ability to be reset multiple times.

The 1210L150/12WR PTC resettable fuse also has an excellent current limiting capability. It is able to limit current up to twenty times greater than the hold current rating, which is the current at which it trips. This helps to protect against instances of severe overloads as well as the effects of any short circuits.

Overall, the 1210L150/12WR resettable fuse is a beneficial component for general-purpose circuit protection in applications ranging from industrial machinery to consumer electronics. This PTC fuse offers the advantage of space-saving design along with long life, reset ability, overcurrent protection, and current limiting capability, thus providing circuit protection that is reliable and effective.

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