Which rating on a fuse relates to its ability to prevent an arc from re-striking across the opened fuse element after the fuse has blown?

The rating that specifically relates to a fuse's ability to prevent an arc from re-striking across the opened fuse element after it has blown is the voltage rating. The voltage rating of a fuse indicates the maximum voltage that the fuse can safely interrupt. When a fuse blows, the electrical circuit opens, and there may be a brief period during which electrical energy can potentially cause an arc. A fuse with an appropriate voltage rating is designed to extinguish any electrical arc that might form as current tries to jump across the gap created by the blown fuse. This helps ensure safe operation by preventing re-striking, which could lead to hazardous conditions or equipment damage.

While the current rating is important for understanding the maximum current a fuse can handle before blowing, it does not directly relate to the arc suppression capability. The time delay rating indicates how quickly a fuse reacts to overload conditions, but again, it does not address arc prevention after a fuse has blown. The fuse type may provide additional information regarding its characteristics but is not the primary factor concerning arc interruptions. Thus, the voltage rating is crucial for ensuring that the fuse effectively prevents arcs, maintaining the safety and integrity of the electrical system.