Edison Fuses

More Information about Edison Fuses

Edison Class RK1 duel-element time delay fuses are recommended for AC power distribution mains, feeders and branch circuits for transformers and motors, as well as non-inductive loads such as heating and lighting. They offer ratings up to 600 A with superior current limitation, cycling and overload capabilities. 

Edison Class RK1 fast-acting fuses are recommended for general power distribution system use for main, feeder and branch circuits having a high percentage of non-inductive loads such as lighting and heating. They are physically interchangeable with other R class fuses and will replace Class K or Class H fuses in standard fuse clips. 

Edison Class RK5 duel-element time delay fuses are recommended for AC power distribution mains, feeders and branch circuits for transformers and motors, as well as non-inductive loads such as heating and lighting, where the available short-circuit current does not exceed 200,000 RMS symmetrical amperes. 

Edison Class L time-delay or LCU fast-acting fuses are recommended for high-capacity main, feeder or branch circuits in power distribution systems for special applications such as system upgrading and install ahead of network protectors. 

Breakers vs Fuses

Fuses

Fuses are safety devices that are intended to provide protection to both equipment and people in the event of a power surge or an overcurrent situation. A fuse can provide this protection by using a small piece of wire that is sacrificial, and is intended to burn up when too much current is passed through it. When this happens, the fuse eliminates the flow of electricity in that circuit until it is replaced. The size and type of wire that is used in the fuse will dictate how much current can pass through that individual fuse. So the main thing to remember is, when a fuse blows, it must be replaced and cannot be reused. 

Circuit Breakers

Circuit breakers are intended to be reused after they are “tripped” during a power surge or an overcurrent situation. Much like fuses, circuit breakers are designed to trip at a certain current level. This is intended to protect both equipment and anyone in the area of that particular circuit. Circuit breakers can be found in just about any variation from single phase, low current applications to three phase, and high current applications.

As a general rule: fuses are more simplistic and reliable. They cost less initially and are better suited for individual circuit protection. However, they can create more cost over time with each use and may create hazards due to the exposed connection points. Whereas circuit breakers offer better branch circuit protection and do not need to be replaced after each use. They are more expensive initially and, because of their complexity, are more prone to failure over time.