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Small cylindrical fuse with axial wire leads, light body and dark markings

YINGHUA

YINGHUA RUEF300 UF300 in-line self-recovery fuse 30V 3A

SKU CH-XCTB-5E57Z

An in-line self-recovery fuse rated for 30 volts and 3 amps

  • Product typeICs Semicoductors
  • Self-recovery design restores protection automatically after a fault
  • In-line form factor simplifies series installation in existing wiring
  • Rated for 30 V operation in low-voltage circuits
  • 3 A hold current supports moderate-load applications

YINGHUA RUEF300 UF300 30V 3A fuse

This YINGHUA RUEF300 UF300 is an in-line self-recovery fuse rated for 30V and 3A. It protects circuits by increasing resistance during overcurrent events and automatically resets once the fault clears. The component suits engineers and hobbyists who need reusable overcurrent protection without replacing a blown fuse. It is not for designs that require a one-time sacrificial link or a higher voltage rating than 30V.

Sustained load behaviour

Under continuous overload the device transitions to a high-resistance state to limit current flow and dissipates heat while doing so. It remains in this tripped condition until the load drops and the element cools enough to return to low resistance. The self-recovery action avoids manual replacement but adds series resistance during normal operation. It is not for applications that cannot tolerate the voltage drop across the fuse during steady-state conduction.

How it compares

Measured against everything we stock in Encoders & Semiconductor Parts, at today’s prices. Recalculated every night.

Price $19.99
Cheaper than about 72% of the 1,027 comparable items (median $34.99).

Specifications

Product
Product typeICs Semicoductors

Questions about this item

How much heat does the RUEF300 fuse dissipate when carrying 3 A continuously?

At the rated 3 A the device operates within its 30 V limit, so steady-state dissipation stays low enough for normal in-line mounting without extra cooling.

What wire gauge or connector style is needed to install this in-line fuse?

The RUEF300 UF300 has axial leads designed for standard through-hole or splice connections; choose a wire size rated for at least 3 A to match the fuse rating.

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