Bussmann series Class RK5 Fuses

Fuses and fuse holders

Bussmann's UL Class RK5 Fusetron product offering provides energy efficient advanced protection with its dual-element, time-delay construction and is available with optional open fuse indication on select ratings. Available in both 250Vac and 600Vac, 200kA RMS Sym interrupting rating and sizes ranging from 0 to 600 amp. Fusetron's deliver 10 seconds (minimum) of time-delay at 500% of rated current (8 seconds for 1/10-30A sizes).

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Bussmann series FRS-R 600 V Class R up to 60 A fuse data sheet no. 1017 Bussmann series FRS-R 600 V Class R 65-600 A fuse data sheet no. 1018 Bussmann series Fusetron FRN-R RK5 fuse data sheet for up to 60 amps No. 1019 Bussmann series Fusetron FRN-R RK5 fuse data sheet for fuses 70 to 600 amps No. 1020 Class R fuse block drawings

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Overview Models Resources Support

Core features

Separate overload and short-circuit elements provide time delay for sizing as close as 125% of motor FLA while delivering excellent short-circuit protection
2:1 selective coordination amp ratio (within the Bussmann series RK5 fuse family) prevents overcurrent events from opening upstream Fusetron fuses
Insulated end caps for 225A-600A fuses reduces exposure to live parts and extends air gap to distance between blades of adjacent mounted fuses or to housing
Superior overload and cycling capabilities
Current limiting provides component short-circuit protection

Benefits of Class RK5 fuses

Dual-element, time-delay fuse – 10 seconds (minimum) at 500% rated amps. Available with indication on select ratings.

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Bussmann series Fuseology

An introduction to understanding fuses and how they are applied for providing overcurrent protection.

Specifications

SKU level data coming soon!

For more infromation about our models please download the documentation available on the resource tab or send us your inquiry using the ¨Contact me¨ button in the overview tab.

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Product specification guides

Bussmann series Fusetron product profile no. 10117

Benefits of energy efficient Fusetron fuses and the Fuses Made Simple program for easy fuse specification.

(PDF 3 MB , 08/09/2021)

Technical data sheets

Bussmann series FRS-R 600 V Class R 65-600 A fuse data sheet no. 1018, Bussmann series FRS-R 600 V Class R 65-600 A fuse data sheet no. 1018

Specifications and technical details on the Bussmann series FRS-R 600 V Class R fuse in ratings from 65 to 600 A.

(PDF 324 KB , 01/07/2019)
Bussmann series Fusetron FRN-R RK5 fuse data sheet for fuses 70 to 600 amps No. 1020

Specifications and technical information on the Bussmann series FRN-R dual element, time-delay fuses in rating from 70 to 600 amps.

(PDF 275 KB , 21/02/2023)
Bussmann series Fusetron FRN-R RK5 fuse data sheet for up to 60 amps No. 1019

Specifications and technical information on the Bussmann series FRN-R fuses in rating from 1/10 to 60 amps.

(PDF 687 KB , 01/07/2019)
Bussmann series Fusetron™ 600 V Class RK5 FRS-R — 600 Vac/300 Vdc, 1/10-60 A, dual element, time-delay fuses data sheet no. 1017

Technical specifications for the Fusetron™ 600 V Class RK5 FRS-R — 600 Vac/300 Vdc, 1/10-60 A, dual element, time-delay fuses.

(PDF 847 KB , 01/07/2019)

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