Cartridge Fuses – Mouser Canada

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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: $8.68
448In Stock

Mfr. Part #
BK-S520-V-12-5-R

Mouser Part #
504-BK-S520-V-12-5-R

Eaton Electronics

Cartridge Fuses 12.5A 420V FAST ACTING

Learn More

Datasheet

448In Stock

$8.68

$7.23

$5.63

$5.62

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: $6.84
17In Stock
200Expected 2026-09-10

Mfr. Part #
BK-S520-10-R

Mouser Part #
504-BK-S520-10-R

Eaton Electronics

Cartridge Fuses 10A 420V FAST ACTING

Learn More

Datasheet

17In Stock

200Expected 2026-09-10

$6.84

$6.31

$5.23

$4.81

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 15A 420V FAST ACTING

BK-S520-15-R
Eaton Electronics
1: $6.84
11In Stock

Mfr. Part #
BK-S520-15-R

Mouser Part #
504-BK-S520-15-R

Eaton Electronics

Cartridge Fuses 15A 420V FAST ACTING

Learn More

Datasheet

11In Stock

$6.84

$6.32

$5.24

$5.23

$4.23

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: $5.31
78In Stock

Mfr. Part #
BK-S520-16-R

Mouser Part #
504-BK-S520-16-R

Eaton Electronics

Cartridge Fuses 16A 420V FAST ACTING

Learn More

Datasheet

78In Stock

$5.31

$4.91

$4.08

$4.02

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 8A 420V FAST ACTING

BK-S520-8-R
Eaton Electronics
1: $5.52
198In Stock

Mfr. Part #
BK-S520-8-R

Mouser Part #
504-BK-S520-8-R

Eaton Electronics

Cartridge Fuses 8A 420V FAST ACTING

Learn More

Datasheet

198In Stock

$5.52

$5.08

$5.07

$4.65

$4.02

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: $6.65
166In Stock

Mfr. Part #
BK-S520-V-10-R

Mouser Part #
504-BK-S520-V-10-R

Eaton Electronics

Cartridge Fuses 10A 420V FAST ACTING

Learn More

Datasheet

166In Stock

$6.65

$6.15

$6.09

$4.80

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 15A 420V FAST ACTING

BK-S520-V-15-R
Eaton Electronics
1: $8.21
43In Stock
100On Order

Mfr. Part #
BK-S520-V-15-R

Mouser Part #
504-BK-S520-V-15-R

Eaton Electronics

Cartridge Fuses 15A 420V FAST ACTING

Learn More

Datasheet

43In Stock

100On Order

$8.21

$7.34

$5.79

$5.23

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: $9.32
1In Stock

Mfr. Part #
BK-S520-V-8-R

Mouser Part #
504-BK-S520-V-8-R

Eaton Electronics

Cartridge Fuses 8A 420V FAST ACTING

Learn More

Datasheet

1In Stock

$9.32

$7.80

$6.08

$5.46

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 420Vac, 12.5A, bulk

BK/S520-12-5-R
Eaton Electronics
1: $9.53
44In Stock

Mfr. Part #
BK/S520-12-5-R

Mouser Part #
504-BK/S520-12-5-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 12.5A, bulk

Learn More

Datasheet

44In Stock

$9.53

$8.96

$8.60

$5.95

View

Min.: 1
Mult.: 1

S520

Ceramic Fuses

12.5 A

5 mm x 20 mm

Bulk

Cartridge Fuses 20A 420V FAST ACTING

BK-S520-20-R
Eaton Electronics
1: $6.88
130On Order

Mfr. Part #
BK-S520-20-R

Mouser Part #
504-BK-S520-20-R

Eaton Electronics

Cartridge Fuses 20A 420V FAST ACTING

Learn More

Datasheet

130On Order

$6.88

$6.35

$5.27

$4.84

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, standard

S520-10-R
Eaton Electronics
1: $15.39
105Expected 2026-09-09

Mfr. Part #
S520-10-R

Mouser Part #
504-S520-10-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 10A, standard

Learn More

Datasheet

105Expected 2026-09-09

$15.39

$11.97

$9.53

$9.13

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: $4.42
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
BK-S520-V-16-R

Mouser Part #
504-BK-S520-V-16-R

Eaton Electronics

Cartridge Fuses 16A 420V FAST ACTING

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$4.42

$4.20

$4.10

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: $7.56
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
BK-S520-V-20-R

Mouser Part #
504-BK-S520-V-20-R

Eaton Electronics

Cartridge Fuses 20A 420V FAST ACTING

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$7.56

$6.98

$5.79

$5.08

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: $4.06
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
BK1-S520-10-R

Mouser Part #
504-BK1-S520-10-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 10A, BK1

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$4.06

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: $4.06
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
BK1-S520-12-5-R

Mouser Part #
504-BK1-S520-12-5-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 12.5A, BK1

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$4.06

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: $4.06
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
BK1-S520-15-R

Mouser Part #
504-BK1-S520-15-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 15A, BK1

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$4.06

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: $4.06
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
BK1-S520-16-R

Mouser Part #
504-BK1-S520-16-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 16A, BK1

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$4.06

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: $4.06
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
BK1-S520-20-R

Mouser Part #
504-BK1-S520-20-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 20A, BK1

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$4.06

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: $4.06
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
BK1-S520-8-R

Mouser Part #
504-BK1-S520-8-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 8A, BK1

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$4.06

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: $14.83
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
S520-12-5-R

Mouser Part #
504-S520-12-5-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 12.5A, standard

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$14.83

$7.34

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: $15.39
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
S520-15-R

Mouser Part #
504-S520-15-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 15A, standard

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$15.39

$11.97

$9.53

$8.61

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: $15.39
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
S520-16-R

Mouser Part #
504-S520-16-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 16A, standard

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$15.39

$11.97

$9.53

$8.55

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: $16.16
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
S520-20-R

Mouser Part #
504-S520-20-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 20A, standard

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$16.16

$7.34

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: $14.83
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
S520-8-R

Mouser Part #
504-S520-8-R

Eaton Electronics

Cartridge Fuses S520 420Vac, 8A, standard

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$14.83

$11.04

$10.28

$9.43

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: $4.28
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
TR2-S520-V-10-R

Mouser Part #
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

$4.28

Quote

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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