These fuses are recommended for AC power distribution system mains, feeders and branch circuits having inductive loads (motors, transformers) or non-inductive loads (lighting, heating) where the available short circuit current does not exceed 200000 rms symmetrical amperes. These dual element, time delay fuses have minimum industry standard time delay of 10 sec at 5 times the fuse rating (8 sec minimum for 250 VAC, 30 A and less). The time delay characteristics of these fuses typically allows them to be sized closer to the running ampacity of inductive loads to reduce cost and provide improved over current protection. These fuses will override normal equipment current surges to reduce unnecessary fuse openings. They are the most popular fuses used in the industry and the most economical for most applications, especially motors and transformers. They have moderate current limitation.

EATON Edison Bullet™ Time Delay Fuse, Current Limiting, Series: ECNR, Non-Indicating, Rejection, 50 A, 250 VAC/125 VDC, 200 kA Interrupt, Class: RK5, 10 s at 500% Response, Ferrule End x Ferrule End Terminal, Holder Mounting, Bullet/Cylindrical Body, Dual Element, Fiberglass, 0.81 in Dia x 3 in L Body

• True dual element construction allows sizing of 125% FLA for motor backup protection
• Superior overload and cycling capabilities
• Current limiting provides component short circuit protection
• For all general purpose applications including lighting, heating and other non-inductive loads
• Tin plated copper brass terminal and zinc plated steel screws

• Catalog https://assets.unilogcorp.com/2/ITEM/DOC/IDW_DOCUMENT_0c0de146cabb72f7f0a5966ed00ceb865667fe788b2fe7e023384c367d42066d.pdf
• Specification Sheet https://assets.unilogcorp.com/2/ITEM/DOC/IDW_DOCUMENT_e371d4f2525bca2901eac7251c3b1db565ba3c953c3b3d7eb49c7581f629f1bc.pdf