LPN-RK_SPI

Dual-Element Time-Delay Fuses

70-600A

Class RK1 – 250 Volts AC/DC

Form No. LPN-RK 70-600

Page 3 of 3

Data Sheet: 1066

Current Limitation Curves

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

design or construction of any products and to discontinue or limit distribution of any products. Bussmann also reserves the right to change or update, without notice, any technical information con-

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

8-26-04

SB04295

B

A

600A

400A

200A

100A

400,000

100,000

1,000

RMS SYMMETRICAL CURRENTS IN AMPERES

10,000

A-B=ASYMMETRICAL AVAILABLE PEAK (2.3 x SYMM RMS AMPS)

Current-Limiting Effects

Prosp.

Let-Through Current (Apparent RMS

S.C.C.

Symmetrical) Versus Fuse Rating

100A

200A

400A

600A

5,000

2,100

3,150

5,000

5,000

10,000

2,600

3,950

6,900

9,250

15,000

2,950

4,500

7,650

10,250

20,000

3,200

4,900

8,350

11,050

25,000

3,350

5,300

8,850

11,750

30,000

3,550

5,600

9,300

12,250

35,000

3,750

5,850

9,700

12,800

40,000

3,900

6,150

10,050

13,250

50,000

4,150

6,600

10,700

14,050

60,000

4,400

7,000

11,250

14,750

80,000

4,750

7,650

12,200

15,850

100,000

5,050

8,250

12,950

16,800

150,000

5,700

9,400

14,500

18,650

200,000

6,200

10,300

15,700

20,100

250,000

6,600

11,050

16,700

21,250

300,000

7,000

11,750

17,550

22,350

*Values derived from curve data