In circuits that have high starting amps, what kind of fuse must be used?

In circuits with high starting amps, a time delay fuse is essential because it can withstand the initial surge of current without blowing. These fuses are designed to tolerate temporary overloads that occur when motors start up, which often results in a much higher current draw than during normal operation. The time delay allows the motor to reach its operating speed and stabilize without interrupting the circuit, ensuring that the component can function properly during these brief periods of high demand.

Standard fuses, on the other hand, typically do not accommodate these inrush currents and could blow during startup, leading to unnecessary interruptions. Resettable fuses may not provide the necessary time delay for brief surges, as they are designed to reset after a fault condition clears. Fast acting fuses are designed to respond quickly to overloads but do not have the tolerance for high initial currents, making them unsuitable for high-starting amps circuits. Thus, the time delay fuse is the most appropriate choice for handling the specific demands of such circuits.