Fuse,Class RK5,40A,ECNR Series
|Scanner Description||Fuse,Class RK5,40A,Ecnr Series|
These 250VAC UL Class RK5 fuses are time delay and nonindicating. They tolerate temporary inrush currents without opening, which prevents nuisance-blowing from motor and equipment startups. Also called slow-blow Class RK5 fuses, these 200kA IR fuses open to disconnect an electrical circuit when exposed to sustained loads and short circuits. They have no indicator for identifying a blown fuse, so they're sometimes used with an indicating fuse block or cover.
UL Class RK5 fuses provide moderate current limitation for general use applications where more current-limiting RK1 fuses aren't needed. These 250VAC or 600VAC fuses have an interrupting rating (IR) of 200kA and are the same size as Class H and K fuses, but have a rejection feature that prevents an accidental downgrade from a current-limiting system. Their modified terminals ensure a match with the rejection clips in Class R fuse holders that prevent the installation of fuses with a lower interrupting capacity. They're typically used in newer equipment, but can also be used with a Class H fuse holder to upgrade older installations from Class H or K fuses for improved overcurrent protection. They are current-limiting to prevent electrical damage by disconnecting circuits before they're exposed to the full magnitude and duration of an overcurrent.
- Item Fuse
- Amps 40A
- AC Voltage Rating 250VAC
- DC Voltage Rating 125VDC
- Class RK5
- Series ECNR
- Visual Indication Nonindicating
- Speed Time Delay
- Body Style Cylindrical
- Fits Fuse Block Style Rejection
- Interrupt Rating 200kA at 250VAC, 20kA at 125VDC
- Fuse Size 3" L x 13/16" dia.
- Length 3"
- Diameter 13/16"
- Equivalent Brand and Series Bussmann FRN-R, Edison ECNR, Littelfuse FLNR, Mersen/Ferraz Shawmut TR-R
- Equivalent Series ECNR, FLNR, FRN-R, TR-R
- Compatible Fuse Block Series R250
- Body Material Fiberglass
- Element Dual
- Standards CE, UL 248-12 Guide JDDZ, CSA Certification Class 1422-01
|VMRS (ATA) CODES||053-006-009||Fuse,Class RK5,40A,ECNR|
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