Littelfuse PolySwitch RXEF Resettable PPTC Fuse, 72V DC, 900mA

The Littelfuse PolySwitch RXEF Resettable PPTC Fuse is a highly reliable and durable overcurrent protection device designed for a wide range of electronic circuits. Engineered with advanced polymer positive temperature coefficient (PPTC) technology, this fuse provides automatic circuit protection by increasing its resistance dramatically when an overcurrent event occurs. Once the fault is cleared and the power is cycled, it automatically resets, eliminating the need for manual replacement and reducing maintenance costs and downtime.

With a voltage rating of 72V DC and a holding current of 900mA, it is perfectly suited for protecting sensitive components in DC power supplies, battery packs, and automotive electronics. Its precise trip current of 1.8A and a rapid time-to-trip of 7.2 seconds ensure that connected equipment is safeguarded against damaging overloads and short circuits effectively.

The compact, round form factor with a lead spacing of 5.8mm makes it easy to integrate into PCB designs, saving valuable board space. It operates reliably across a broad temperature range from -40°C to 85°C, making it suitable for use in challenging environments, including industrial controls, consumer electronics, and telecommunications equipment.

By choosing this resettable fuse, you invest in a reusable protection solution that enhances product safety, longevity, and reliability while streamlining your inventory by removing the need for disposable fuses.