Littelfuse 0.5 A Resettable Fuse 72V Radial Lead PolySwitch RXEF Series RXEF050

The Littelfuse RXEF050 is a 0.5 A resettable fuse from the PolySwitch™ RXE Series, designed to provide reliable circuit protection with low hold current and a wide operating voltage of up to 72 V. Featuring a radial lead orientation, this device exhibits a compact form factor with dimensions of 7.9 mm length, 13.7 mm height, and 3 mm width, making it suitable for integration in space-sensitive electronic and electrical equipment.

These resettable fuses are maintenance free and capable of automatically resetting thousands of times. The RXEF050 model offers a hold current of 0.5 A, a trip current of 1 A, and a maximum current rating of 40 A, making it ideal for applications including printers, satellite video receivers, industrial control circuits, transformers, computer motherboards, modems, USB hubs, game machines, phones, and fax machines. The fuse quickly switches from a low resistance state to a high resistance state when an overload or short circuit occurs, protecting sensitive circuits from damage.

Operating over temperatures from -40°C to 60°C, the fuse has a time-to-trip of 4 seconds, and features low resistance (minimum 0.5 Ω to maximum 1.17 Ω) for minimal power loss, rated power dissipation of 0.77 W. Its compliance with international standards such as TUV, RoHS, CQC, UL, and CSA ensures safety and environment friendliness. The fuse is halogen free and designed to operate without the need for a fuseholder, providing a compact and efficient protection solution.

This resettable fuse is a practical choice for security systems, power supplies, automotive and medical equipment, instrumentation and control systems, computers, AV, and telecommunications devices where circuit protection and automatic reset are vital.

Automatically resets itself thousands of times for long service life. Low hold current and high voltage rating for diverse electronic applications. Compact radial lead construction for easy PCB mounting. Wide operating temperature range (-40°C to 60°C) ensures reliability.

Certified to multiple safety standards ensuring compliance. Maintenance free operation eliminates the need for fuse replacements. Suitable for a wide range of consumer, industrial, and medical equipment. Explore more Resettable Fuses and specialized circuit protection products in the Electronics & Electricals category at EnvMart for reliable electrical system safety solutions.