What a 30 amp breaker looks like?

A 30 amp breaker is typically a larger, double-pole circuit breaker found in the electrical panel. It often has a plastic housing, usually colored black or gray, and features a toggle switch for easy on/off operation. The breaker is designed to accommodate 10 or 8 gauge wire, depending on the application, and usually has a label indicating its amperage rating. The terminals for the wires are located on the back or sides of the breaker.