Choosing an appropriate fuse and fuse holder is critical in maintaining dependable protection and safe operation of electrical systems. The fuse must be sized appropriately as far as current rating, voltage rating, and breaking capacity for both normal operating conditions as well as overloads and short circuits. The fuse holder must be the proper size and type for the chosen fuse to allow for a secure connection and the ability to dissipate heat properly. External temperature, vibration, and mounting position should also be considered. Selecting compatible components serves to reduce the potential for overheating, electrical failure, and future equipment damage, and helps ensure that a circuit will operate effectively and safely under any condition.