Littelfuse 3 A Resettable Fuse, 72V Radial Lead RXEF300

Littelfuse RXEF300 3 A Resettable Fuse 72V is a part of the PolySwitch™ RXE Series, designed for protection of electrical and electronic circuits against excessive currents such as overloads or short circuits. It features a rapid transition from low resistance to very high resistance under fault conditions, providing reliable and automatic resettable protection.

This radial lead fuse is ideally suited for applications in printers, satellite video receivers, industrial controls, transformers, computer motherboards, modems, USB hubs, ports, peripherals, game machines, phones, fax machines, and analog and digital line cards.

The fuse holds a current of 3 A and trips at 6 A with a time to trip of 19.8 seconds. It is rated for up to 72 volts and dissipates up to 2.8 watts of power. The device measures 23.9mm in length, 28.6mm in height, and 3mm in width, making it compact for space-constrained PCB designs.

With minimum resistance at 0.04 ohm and maximum resistance at 100 milliohm, it ensures low on-state resistance for efficient operation. The fuse can operate reliably in a temperature range from -40°C to 60°C, supporting various industrial and commercial environments.

Certified to stringent standards including UL, CSA, CQC, TUV, and RoHS, the RXEF300 fuse is halogen-free and maintenance-free, capable of automatically resetting thousands of times without the need for replacement. These characteristics make it suitable for security systems, power supplies, transformers, power switching devices, automotive and medical equipment, instrumentation, control systems, computers, peripherals, audiovisual, and telecommunications applications.

Holds a current of 3 A with a trip current of 6 A. Rated for 72 volts with a power dissipation of 2.8 W. Radial lead orientation for PCB wire ended installation. Compact size with precise dimensions for circuit board integration.

Meets UL, CSA, CQC, TUV, and RoHS approvals and is halogen free. Fast response time with 19.8 seconds time to trip during faults. Automatic reset capability allows thousands of resets, extending component life. Wide operating temperature range from -40°C to 60°C.

Explore the Electronics & Electricals section on EnvMart for more Littelfuse products and other high-quality Resettable Fuses to secure your electronic circuits reliably and efficiently.