Edison Fuses
Edison fuses provide dependable overcurrent and short-circuit protection for a wide range of electrical systems. Available in both fast-acting and time-delay configurations, these fuses are designed to open the circuit when current exceeds safe levels, helping protect wiring, equipment, and connected loads from damage. Edison fuses are commonly used in residential, commercial, and industrial power distribution applications.
Manufactured using high-quality materials, Edison fuses are engineered for consistent performance and long-term reliability. Design improvements have enhanced safety by using base materials that remain intact under high thermal stress, helping reduce the risk of fire in fuse installations. A distinctive design and larger, highly visible labeling also make identification and maintenance easier in the field.
The Edison fuse line was originally developed by Cooper Industries and is now part of Eaton. It includes several industry-standard fuse classes. Class RK1 and RK5 dual-element time-delay fuses are well suited for motor, transformer, and mixed-load circuits, while fast-acting versions are commonly used for non-inductive loads such as lighting and heating. Edison Class L and LCU fuses support high-capacity applications in power distribution systems where superior current limitation is required.
FAQs
Q: What is the difference between fast-acting and time-delay fuses?
Fast-acting fuses open quickly when an overcurrent occurs and are typically used for non-inductive loads. Time-delay fuses allow temporary overloads, such as motor inrush current, without opening the circuit.
Q: What applications are Edison Class RK1 fuses used for?
Edison Class RK1 dual-element time-delay fuses are recommended for AC power distribution mains, feeders, and branch circuits supplying motors, transformers, lighting, and heating loads.
Q: Can Edison fuses replace other R-class fuses?
Yes, Edison Class RK1 fast-acting fuses are physically interchangeable with other R-class fuses and can replace Class K or Class H fuses in standard fuse clips.
Q: What voltage ratings are available for Edison fuses?
Edison fuses are available in voltage ratings ranging from 32 volts up to 600 volts, depending on fuse class and application.
Q: How do fuses differ from circuit breakers?
Fuses use a sacrificial element that melts during an overcurrent event and must be replaced after operation. Circuit breakers trip during a fault and can be reset, but are generally more complex and costly.
Why Buy Edison Fuses from RSP Supply
RSP Supply offers a full selection of Edison fast-acting and time-delay fuses to support a wide range of electrical protection needs. Our inventory includes multiple fuse classes, current ratings, and voltage options suitable for residential, commercial, and industrial installations. Customers rely on RSP Supply for dependable product sourcing, technical expertise, and trusted circuit protection solutions.