Why use an electric fuse?
Fuses offer a safe and economical solution for overcurrent protection of both conductors and components. Fuses can help your control systems meet the newest UL and NEC codes. • 1. Safety Overcurrent protective devices that have tripped are often reset without first investigating the cause of the fault. Electromechanical devices may not have the reserve capacity to open safely when a second or third fault occurs. When a fuse opens it is replaced with a new fuse, so the protection level is not degraded by previous faults. • 2. Cost effective Fuses typically are the most cost effective means of providing overcurrent protection. This is especially true where high fault currents exist or where small components such as Control Transformers (CPTs) or DC power supplies need protection. • 3. Reliability Fuses have no moving parts to wear out or become contaminated by dust or oil. • 4. North American standards Tri-National Standards specify fuse performance and maximum allowable fuse let-thru va
