Littelfuse 0.5 A Resettable Fuse 60V Radial Lead RKEF050

Littelfuse RKEF050 0.5 A Resettable Fuse 60V Radial Lead is a reliable circuit protection device designed to automatically reset after an electrical fault is cleared. It incorporates Tyco PolySwitch™ PTC Devices of the RKEF Series that rapidly switch from a low resistance state to a very high resistance under fault conditions, protecting sensitive electronic components.

Its compact dimensions (7.1mm length, 3.56mm width, 11.43mm height) and radial lead orientation facilitate convenient PCB wire-ended mounting. The fuse holds a current of 0.5 A and trips quickly at 1 A within 0.8 seconds, ensuring efficient protection against overcurrent and short circuits.

With power dissipation of 1 watt and resistance values between 0.32 Ω minimum and 900 mΩ maximum, it ensures stable operation under electrical stresses. Suitable operating temperature range is -40°C to 60°C, making it adaptable for various industrial and commercial environments.

This fuse is certified by TUV, RoHS, CSA, and UL, ensuring compliance with international safety and environmental standards. It is maintenance free and can reset automatically thousands of times without replacement.

Typical applications include security systems, automotive electronics, medical devices, instrumentation, power supplies, transformers, and telecommunications. Its small size, automatic reset functionality, and high reliability make it ideal for protecting electronic circuits in industrial, laboratory, and commercial settings.

This resettable fuse protects electrical and electronic circuits against excessive currents. It features a radial lead orientation for easy PCB mounting. The fuse supports a voltage rating of 60 V and current hold of 0.5 A with a trip current of 1 A.

It has a rapid transition from low to high resistance during overload for circuit safety. The compact size (7.1mm length, 3.56mm width, 11.43mm height) allows fitting in tight spaces. The fuse is maintenance free and can reset thousands of times automatically.

It complies with TUV, RoHS, CSA, and UL certifications ensuring quality and safety standards. Main applications include security systems, automotive, medical equipment, power supplies, and instrumentation. Designed to operate reliably between -40°C to 60°C operating temperatures.

Explore Littelfuse products and other Resettable Fuses on EnvMart for robust circuit protection solutions tailored to your industrial, commercial, and electronics needs.