Cartridge Fuses – Mouser Hong Kong

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S520 Fast-Acting Ceramic Tube Fuses

Eaton Electronics S520 Fast-Acting Ceramic Tube Fuses provide reliable overcurrent protection up to 20A and 420V_AC for high power and higher voltage applications, respectively. Typical applications include data centers, telecom systems, and intelligent commercial buildings. The S520 fuses are available in a compact small-footprint 5mm x 20mm cartridge or axial leaded packages, providing excellent board savings. These fuses can withstand operating temperatures ranging from -55°C to +125°C, making them suitable for use in various environments. All products are lead-free, halogen-free, and RoHS compliant.

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Part #

Cartridge Fuses 12.5A 420V FAST ACTING

BK-S520-V-12-5-R
Eaton Electronics
1: HK$49.24
448In Stock

Mfr. Part No.
BK-S520-V-12-5-R

Mouser Part No
504-BK-S520-V-12-5-R

Eaton Electronics

Cartridge Fuses 12.5A 420V FAST ACTING

Learn More

Datasheet

448In Stock

HK$49.24

HK$41.26

HK$32.14

HK$26.30

View

Min.: 1
Mult.: 1

S520

Ceramic Fuses

12.5 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

8.1 mOhms

Cartridge Fuses 10A 420V FAST ACTING

BK-S520-10-R
Eaton Electronics
1: HK$39.05
17In Stock
200Expected 2/11/2026

Mfr. Part No.
BK-S520-10-R

Mouser Part No
504-BK-S520-10-R

Eaton Electronics

Cartridge Fuses 10A 420V FAST ACTING

Learn More

Datasheet

17In Stock

200Expected 2/11/2026

HK$39.05

HK$36.00

HK$29.84

HK$27.45

HK$25.65

Min.: 1
Mult.: 1

S520

Ceramic Fuses

10 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

8 mOhms

Cartridge Fuses 15A 420V FAST ACTING

BK-S520-15-R
Eaton Electronics
1: HK$56.80
11In Stock

Mfr. Part No.
BK-S520-15-R

Mouser Part No
504-BK-S520-15-R

Eaton Electronics

Cartridge Fuses 15A 420V FAST ACTING

Learn More

Datasheet

11In Stock

HK$56.80

HK$50.64

HK$48.83

HK$37.98

View

Min.: 1
Mult.: 1

S520

Ceramic Fuses

15 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

6.8 mOhms

Cartridge Fuses 16A 420V FAST ACTING

BK-S520-16-R
Eaton Electronics
1: HK$56.80
78In Stock

Mfr. Part No.
BK-S520-16-R

Mouser Part No
504-BK-S520-16-R

Eaton Electronics

Cartridge Fuses 16A 420V FAST ACTING

Learn More

Datasheet

78In Stock

HK$56.80

HK$50.64

HK$48.83

HK$37.98

View

Min.: 1
Mult.: 1

S520

Ceramic Fuses

16 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

6.1 mOhms

Cartridge Fuses 20A 420V FAST ACTING

BK-S520-20-R
Eaton Electronics
1: HK$42.09
30In Stock
100Expected 31/8/2026

Mfr. Part No.
BK-S520-20-R

Mouser Part No
504-BK-S520-20-R

Eaton Electronics

Cartridge Fuses 20A 420V FAST ACTING

Learn More

Datasheet

30In Stock

100Expected 31/8/2026

HK$42.09

HK$38.80

HK$32.22

HK$29.59

View

Min.: 1
Mult.: 1

S520

Ceramic Fuses

20 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

5 mOhms

Cartridge Fuses 8A 420V FAST ACTING

BK-S520-8-R
Eaton Electronics
1: HK$56.80
198In Stock

Mfr. Part No.
BK-S520-8-R

Mouser Part No
504-BK-S520-8-R

Eaton Electronics

Cartridge Fuses 8A 420V FAST ACTING

Learn More

Datasheet

198In Stock

HK$56.80

HK$50.64

HK$48.83

HK$37.98

View

Min.: 1
Mult.: 1

S520

Ceramic Fuses

8 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

9 mOhms

Cartridge Fuses 10A 420V FAST ACTING

BK-S520-V-10-R
Eaton Electronics
1: HK$37.98
166In Stock

Mfr. Part No.
BK-S520-V-10-R

Mouser Part No
504-BK-S520-V-10-R

Eaton Electronics

Cartridge Fuses 10A 420V FAST ACTING

Learn More

Datasheet

166In Stock

HK$37.98

HK$35.10

HK$34.77

HK$27.87

HK$26.22

Min.: 1
Mult.: 1

S520

Ceramic Fuses

10 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

8 mOhms

Cartridge Fuses 15A 420V FAST ACTING

BK-S520-V-15-R
Eaton Electronics
1: HK$58.12
143In Stock

Mfr. Part No.
BK-S520-V-15-R

Mouser Part No
504-BK-S520-V-15-R

Eaton Electronics

Cartridge Fuses 15A 420V FAST ACTING

Learn More

Datasheet

143In Stock

HK$58.12

HK$51.79

HK$49.98

HK$38.80

View

Min.: 1
Mult.: 1

S520

Ceramic Fuses

15 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

6.8 mOhms

Cartridge Fuses 8A 420V FAST ACTING

BK-S520-V-8-R
Eaton Electronics
1: HK$47.68
1In Stock

Mfr. Part No.
BK-S520-V-8-R

Mouser Part No
504-BK-S520-V-8-R

Eaton Electronics

Cartridge Fuses 8A 420V FAST ACTING

Learn More

Datasheet

1In Stock

HK$47.68

HK$33.04

HK$30.50

HK$26.72

HK$26.22

Min.: 1
Mult.: 1

S520

Ceramic Fuses

8 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

9 mOhms

Cartridge Fuses S520 420Vac, 12.5A, bulk

BK/S520-12-5-R
Eaton Electronics
1: HK$59.68
32In Stock

Mfr. Part No.
BK/S520-12-5-R

Mouser Part No
504-BK/S520-12-5-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 12.5A, bulk

Learn More

Datasheet

32In Stock

HK$59.68

HK$53.18

HK$51.29

HK$39.87

View

Min.: 1
Mult.: 1

S520

Ceramic Fuses

12.5 A

5 mm x 20 mm

Bulk

Cartridge Fuses S520 420Vac, 10A, standard

S520-10-R
Eaton Electronics
1: HK$98.06
105Expected 2/11/2026

Mfr. Part No.
S520-10-R

Mouser Part No
504-S520-10-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 10A, standard

Learn More

Datasheet

105Expected 2/11/2026

HK$98.06

HK$90.17

HK$86.06

HK$66.17

View

Min.: 1
Mult.: 1

S520

Ceramic Fuses

10 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

8 mOhms

Cartridge Fuses 16A 420V FAST ACTING

BK-S520-V-16-R
Eaton Electronics
1: HK$58.12
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
BK-S520-V-16-R

Mouser Part No
504-BK-S520-V-16-R

Eaton Electronics

Cartridge Fuses 16A 420V FAST ACTING

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

HK$58.12

HK$51.79

HK$49.98

HK$38.80

View

Min.: 1
Mult.: 1

S520

Ceramic Fuses

16 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

6.1 mOhms

Cartridge Fuses 20A 420V FAST ACTING

BK-S520-V-20-R
Eaton Electronics
1: HK$58.12
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
BK-S520-V-20-R

Mouser Part No
504-BK-S520-V-20-R

Eaton Electronics

Cartridge Fuses 20A 420V FAST ACTING

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

HK$58.12

HK$51.79

HK$49.98

HK$38.80

View

Min.: 1
Mult.: 1

S520

Ceramic Fuses

20 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

5 mOhms

Cartridge Fuses S520 420Vac, 10A, BK1

BK1-S520-10-R
Eaton Electronics
1,000: HK$25.98
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
BK1-S520-10-R

Mouser Part No
504-BK1-S520-10-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 10A, BK1

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

HK$25.98

Min.: 1,000
Mult.: 1,000

S520

Ceramic Fuses

10 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

8 mOhms

Cartridge Fuses S520 420Vac, 12.5A, BK1

BK1-S520-12-5-R
Eaton Electronics
1,000: HK$25.98
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
BK1-S520-12-5-R

Mouser Part No
504-BK1-S520-12-5-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 12.5A, BK1

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

HK$25.98

Min.: 1,000
Mult.: 1,000

S520

Ceramic Fuses

12.5 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

8.1 mOhms

Cartridge Fuses S520 420Vac, 15A, BK1

BK1-S520-15-R
Eaton Electronics
1,000: HK$25.98
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
BK1-S520-15-R

Mouser Part No
504-BK1-S520-15-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 15A, BK1

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

HK$25.98

Min.: 1,000
Mult.: 1,000

S520

Ceramic Fuses

15 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

6.8 mOhms

Cartridge Fuses S520 420Vac, 16A, BK1

BK1-S520-16-R
Eaton Electronics
1,000: HK$25.98
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
BK1-S520-16-R

Mouser Part No
504-BK1-S520-16-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 16A, BK1

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

HK$25.98

Min.: 1,000
Mult.: 1,000

S520

Ceramic Fuses

16 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

6.1 mOhms

Cartridge Fuses S520 420Vac, 20A, BK1

BK1-S520-20-R
Eaton Electronics
1,000: HK$25.98
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
BK1-S520-20-R

Mouser Part No
504-BK1-S520-20-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 20A, BK1

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

HK$25.98

Min.: 1,000
Mult.: 1,000

S520

Ceramic Fuses

20 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

5 mOhms

Cartridge Fuses S520 420Vac, 8A, BK1

BK1-S520-8-R
Eaton Electronics
1,000: HK$25.98
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
BK1-S520-8-R

Mouser Part No
504-BK1-S520-8-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 8A, BK1

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

HK$25.98

Min.: 1,000
Mult.: 1,000

S520

Ceramic Fuses

8 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

9 mOhms

Cartridge Fuses S520 420Vac, 12.5A, standard

S520-12-5-R
Eaton Electronics
1: HK$98.06
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
S520-12-5-R

Mouser Part No
504-S520-12-5-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 12.5A, standard

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

HK$98.06

HK$90.17

HK$86.06

HK$66.17

View

Min.: 1
Mult.: 1

S520

Ceramic Fuses

10 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

8.1 mOhms

Cartridge Fuses S520 420Vac, 15A, standard

S520-15-R
Eaton Electronics
1: HK$87.87
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
S520-15-R

Mouser Part No
504-S520-15-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 15A, standard

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

HK$87.87

HK$68.31

HK$54.42

HK$50.47

View

Min.: 1
Mult.: 1

S520

Ceramic Fuses

15 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

6.8 mOhms

Cartridge Fuses S520 420Vac, 16A, standard

S520-16-R
Eaton Electronics
1: HK$98.06
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
S520-16-R

Mouser Part No
504-S520-16-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 16A, standard

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

HK$98.06

HK$90.17

HK$86.06

HK$66.17

View

Min.: 1
Mult.: 1

S520

Ceramic Fuses

16 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

6.1 mOhms

Cartridge Fuses S520 420Vac, 20A, standard

S520-20-R
Eaton Electronics
1: HK$98.06
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
S520-20-R

Mouser Part No
504-S520-20-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 20A, standard

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

HK$98.06

HK$90.17

HK$86.06

HK$66.17

View

Min.: 1
Mult.: 1

S520

Ceramic Fuses

20 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

5 mOhms

Cartridge Fuses S520 420Vac, 8A, standard

S520-8-R
Eaton Electronics
1: HK$98.06
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
S520-8-R

Mouser Part No
504-S520-8-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 8A, standard

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

HK$98.06

HK$90.17

HK$86.06

HK$66.17

View

Min.: 1
Mult.: 1

S520

Ceramic Fuses

8 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Bulk

9 mOhms

Cartridge Fuses S520 axial 420Vac, 10A, tape and reel

TR2-S520-V-10-R
Eaton Electronics
1,500: HK$25.40
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
TR2-S520-V-10-R

Mouser Part No
504-TR2-S520-V-10-R

Eaton Electronics

Cartridge Fuses S520 axial 420Vac, 10A, tape and reel

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

HK$25.40

Min.: 1,500
Mult.: 1,500

: 1,500

S520

Ceramic Fuses

10 A

Fast Blow

5 mm x 20 mm

420 VAC

1.5 kA

Board Mount

Axial

- 55 C

+ 125 C

Reel

8 mOhms

S520 Fast-Acting Ceramic Tube Fuses

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