LR4-380XF

PTC resettable fuses, also known as polymeric positive temperature coefficient (PPTC) resettable fuses, are a type of current-limiting device that protect electronic devices from current over-load. The LR4-380XF is one of the most popular PTC resettable fuses on the market. It is an ultra-low profile, small size, plastic PTC device that is designed to protect low-voltage DC circuits from overloads and short circuits. The LR4-380XF is suitable for a wide range of applications, including consumer electronics, communication and networking equipment, and automotive electronics. It is also suitable for use in high-power applications, such as LEDs, solar cells, and power tools. It is designed to provide over-current protection in low-voltage DC circuits, while allowing a limited current to flow through during normal operation.The LR4-380XF operates on the principle that when the circuit current exceeds the fuse\'s rated current, the fuse\'s tightly wound internal wire will heat up and quickly increase the resistance of the fuse itself. This increase in resistance will limit the current to the specified rated value and limit the damage to the protected device. Once the circuit returns to normal, the device will be reset and will allow current to flow through its normal circuit again.The LR4-380XF is a highly reliable device and has a higher life-time rating than some other types of resettable fuses. Its resistance is temperature-controlled to ensure reliable performance and protection in both high and low temperature environments. The LR4-380XF also features a wide operating voltage range, from 2.5 V to 30 V, making it suitable for use in a variety of applications. In addition to over-current protection, the LR4-380XF can also provide protection against overheating and poor insulation. By including a thermal fuse with the LR4-380XF, a breakdown or short circuit in the electrolytic capacitor or other component can be detected before any damage occurs. The LR4-380XF can also be used in high-current applications, such as power supplies and motor protection circuits, as it offers a large current capacity.The LR4-380XF is an ideal device for providing reliable over-current protection in a wide range of applications. It is easy to install and is designed to provide reliable protection against over-currents, overheating and short circuits. The LR4-380XF is highly reliable and offers a wide operating voltage range, making it suitable for use in many electronic applications.