Littelfuse 0.3 A 72V Resettable Fuse Radial Lead RXEF030

The Littelfuse RXEF030 is a 0.3 A 72V resettable fuse featuring radial lead orientation designed to protect electronic and electrical circuits from overload and short circuit conditions. This PolySwitch™ RXE series device provides reliable circuit protection by rapidly switching from low resistance to high resistance under fault conditions, then automatically resetting once the fault is cleared and power is removed.

This resettable fuse has a trip current rating of 600 mA with a hold current of 0.3 A and a typical trip time of 3 seconds, making it effective for sensitive circuit protection. Its compact dimensions - 7.4mm length, 12.7mm height, and 3mm width - make it well-suited for space-constrained circuit boards.

With minimum resistance of 0.88 Ω and maximum resistance of 2.1 Ω, it maintains low losses during normal operation, while its operating temperature range of -40°C to 60°C and power dissipation of 0.49 W ensure performance across varied environments. The device is RoHS compliant and carries multiple international approvals including TUV, UL, CQC, and CSA, guaranteeing global safety standards compliance.

Applications span various sectors such as industrial controls, printers, satellite video receivers, computer motherboards, modems, USB hubs, telecommunications, and instrumentation systems. Its auto-reset capability eliminates the need for fuse replacement, reducing maintenance costs and downtime. The radial lead configuration facilitates straightforward PCB mounting without the need for fuse holders.

Operates at 0.3 A hold current and 600 mA trip current. Fast trip time of 3 seconds in overload conditions. Compact dimensions enable use in tight spaces. Low resistance ensures minimal impact on circuit performance. Wide operating temperature range from -40°C to 60°C.

Certified to global safety and environmental standards. Automatically resets after fault clearance, lowering maintenance. Suitable for industrial, telecommunications, medical, and consumer electronics. Radial lead design supports easy PCB integration.

This Littelfuse RXEF030 resettable fuse is ideal for protecting sensitive electronics in demanding industrial and commercial environments. Its robust design paired with efficient protection capabilities enables reliable circuit safety with minimal intervention. Browse additional Littelfuse products and Resettable Fuses at EnvMart for versatile circuit protection solutions.