Automotive Blade Fuse

Description

ATC (Automotive Technology Closed) Fuses: The ATC fuse is an evolution of the ATO. Its key feature is a fully closed or sealed plastic housing. The design eliminates the opening at the bottom, completely encasing the fuse element. This makes the ATC fuse more resistant to moisture, corrosion, and humidity—a significant advantage for applications in more exposed locations like engine bay fuse boxes, which can be subject to splashes and environmental stress. For this reason, the ATC fuse has become the more common “standard” fuse in modern automotive manufacturing.

Despite this difference, both ATO and ATC fuses share the same physical dimensions and are electrically interchangeable. Their larger size compared to newer fuse types makes them well-suited for a wide range of general-purpose automotive circuits.

Common Applications:
Standard blade fuses are workhorses. You will find them protecting a vast array of circuits in both older and current vehicles, including interior and exterior lighting, radio and audio systems, HVAC blower motors, power windows, and various control modules. Their robust nature and wide range of amperage ratings make them a versatile choice for circuits that do not have extreme space constraints.