Siemens 3NA3820

Current rating is the maximum current that a fuse will carry for an indefinite period without too much deterioration of the fuse element.

In electronic components, "Fuse Size" refers to the physical dimensions and current rating of a fuse used to protect the circuit from overcurrent conditions. The fuse size is typically specified in terms of its physical dimensions, such as length, width, and diameter, as well as its current rating in amperes. Choosing the correct fuse size is crucial to ensure that it can safely interrupt the circuit in case of an overcurrent situation without causing damage to the components. It is important to select a fuse size that matches the maximum current that the circuit is expected to draw under normal operating conditions to provide effective protection.

Overall Length in electronic components refers to the total length of the component, typically measured from one end to the other. This parameter is important for determining the physical size and dimensions of the component, which can impact its compatibility with a circuit board or housing. The overall length may vary depending on the type of component, such as resistors, capacitors, or integrated circuits, and is often specified in datasheets to ensure proper fit and functionality within a given electronic system. Designers and engineers consider the overall length when selecting components to ensure they meet the space requirements and mechanical constraints of the application.