30R110UPR Circuit Protection

PTC Resettable Fuses are designed to offer protection against current overloading, and are mainly used for applications such as consumer electronics, automotive, industrial, and more. The 30R110UPR PTC Resettable Fuses are a type of polymeric positive temperature coefficient (PPTC) resettable fuse combining excellent characteristics in a maximum size of only 0.5” x 0.3”.

The 30R110UPR features a high interrupting capacity, fast acting, and a UL recognized component. It has a maximum holds current of 110A and is capable of protecting against a wide range of current overloads. As the name suggests, the 30R110UPR features a self-resetting action, allowing it to be used as an alternative to traditional fuses.

The working principle of the 30R110UPR revolves around a simple circuit composed of a PPTC element and a current limiting resistor. The PPTC element is connected in parallel with the load, and the current limiting resistor is placed in series with the PPTC element.

When the load current draws in excess of the fuse rating, the PPTC element complexly changes its resistance from a low one to a extremely high level, thus limiting the current draw from the load. The current limiting resistor, in its turn, helps dissipate the heat generated during the fusing process. When the overload is removed, the PPTC element returns to its original state.

The 30R110UPR is suitable for a variety of electronic devices, including consumer electronics, automotive, industrial, and the like. The compact size of the fuse allows it to easily fit in tight spaces, while the high interrupting capacity ensures the reliable overcurrent protection. The self-resetting action of the 30R110UPR eliminates the need for replacing the fuse after an overload, thus enabling customers to save time and money.

The 30R110UPR is designed with safety in mind and is Recognized for its UL Class 94 V-1 component and UL248-14, Panelboards and Circuit Protector Section. Its convenient form factors, fast acting response, and reliability make it an ideal choice for protecting electronic devices from current overloads.