FRN-R Class RK5 250Vac, 125/250Vdc

70-600A, dual element, time-delay fuses

Technical Data 1020

Effective February 2016

Eaton, Bussmann and Fusetron are valuable

trademarks of Eaton in the U.S. and other

countries. You are not permitted to use

the Eaton trademarks without prior written

consent of Eaton.

Eaton

1000 Eaton Boulevard

Cleveland, OH 44122

Eaton.com

Bussmann Division

114 Old State Road

Ellisville, MO 63021

United States

Eaton.com/bussmannseries

© 2016 Eaton

All Rights Reserved

Printed in USA

Publication No. 1020 — BU-SB13731

February 2016

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latest product and support information.

The only controlled copy of this data sheet is the electronic read-only version located on the Eaton network drive. All other copies of this document

are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical information that will help

the end user with design applications. Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or

limit distribution of any products. Eaton also reserves the right to change or update, without notice, any technical information contained in this bulletin.

Once a product has been selected, it should be tested by the user in all possible applications.

Current-limiting effects:

Prosp. S.C.C.

Let-through current

(apparent RMS Sym. vs. fuse rating)

—

100A

200A

400A

600A

5000

3000

5000

5000

5000

10,000

4000

7000

10,000

10,000

15,000

5000

8000

11,000

15,000

20,000

5000

8000

12,000

16,000

25,000

6000

9000

13,000

17,000

30,000

6000

10,000

14,000

18,000

35,000

6000

10,000

15,000

19,000

40,000

7000

11,000

15,000

20,000

50,000

7000

11,000

17,000

21,000

60,000

8000

12,000

18,000

22,000

70,000

8000

13,000

19,000

23,000

80,000

8000

13,000

19,000

24,000

90,000

9000

14,000

20,000

25,000

100,000

9000

14,000

21,000

26,000

150,000

10,000

16,000

24,000

29,000

200,000

11,000

18,000

26,000

32,000

400000

9000

8000

7000

6000

300000

200000

100000

5000

4000

90000

3000

2000

1000

80000

70000

60000

B

A

50000

40000

30000

20000

10000

600A

400A

200A

100A

RMS SYMMETRICAL CURRENT IN AMPS

A-B = ASYMMETRICAL AVAILABLE PEAK (2.3 X SYM RMS AMPS)

Current-limitation curves: