The BOURNS part MF-RX185/72-0 is a PTC resettable fuse designed for automotive applications. It has a voltage rating of 72V and a maximum current rating of 40A. The fuse has a hold current of 1.85A and a trip current of 3.7A. With a low resistance of 0.08 Ohms, this fuse provides efficient and reliable overcurrent protection. It features a radial design and measures 15.18 x 3.1 x 21.18mm, making it compact and easy to install. The fuse is packaged in a bag for convenient handling. It has a power rating of 2.1W and a response time of 12.6 seconds, ensuring fast and accurate protection against overloads.