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Data Sheet # 1019

FUSETRON™ 250V Class RK5

The only controlled copy of this Data Sheet is the electronic read-only version located on the Cooper Bussmann 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. Cooper Bussmann reserves the right, without notice, to change

design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann 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-Limitation Curves

Time-Current Curves - Average Melt

8 to 60 Amps

400000

9000

8000

7000

6000

300000

200000

100000

5000

4000

90000

3000

2000

1000

80000

70000

60000

B

A

50000

40000

30000

20000

10000

30A

60A

PROSPECTIVE SHORT-CIRCUIT CURRENT - SYMMETRICAL RMS AMPS

The only controlled copy of this Data Sheet is the electronic read-only version located on the Cooper Bussmann 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. Cooper Bussmann reserves the right, without notice, to change

design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann 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.

AMP RATING

CURRENT IN AMPS

810 15

30

60

Current-Limiting Effects

Prosp.

Let-Through Current

S.C.C.

(Apparent RMS Symmetrical Vs. Fuse Rating)

30A

60A

5000

1000

2000

10,000

2000

3000

15,000

2000

3000

20,000

2000

4000

25,000

2000

4000

30,000

2000

4000

35,000

2000

4000

40,000

2000

5000

50,000

3000

5000

60,000

3000

5000

70,000

3000

6000

80,000

3000

6000

90,000

3000

6000

100,000

3000

6000

150,000

4000

7000

200,000

4000

8000