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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (SEK) Filter the results in the table by unit price based on your quantity.	Qty.	Series	Product	Current Rating	Fuse Type	Fuse Size/Group	Voltage Rating AC	Interrupt Rating	Mounting Style	Termination Style	Minimum Operating Temperature	Maximum Operating Temperature	Packaging	Resistance
Cartridge Fuses 12.5A 420V FAST ACTING BK-S520-V-12-5-R Eaton Electronics 1: 47,48 kr 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 about Eaton Electronics eaton s520	Datasheet	448In Stock	47,48 kr 40,88 kr 33,08 kr 30,77 kr View 29,34 kr 25,28 kr 24,29 kr 22,53 kr	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 15A 420V FAST ACTING BK-S520-15-R Eaton Electronics 1: 54,95 kr 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 about Eaton Electronics eaton s520	Datasheet	11In Stock	54,95 kr 50,44 kr 47,70 kr 38,14 kr View 34,29 kr 32,31 kr 29,45 kr	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: 71,87 kr 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 about Eaton Electronics eaton s520	Datasheet	78In Stock	71,87 kr 64,62 kr 57,70 kr 47,48 kr View 38,03 kr 33,41 kr 31,43 kr 29,45 kr	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: 43,52 kr 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 about Eaton Electronics eaton s520	Datasheet	198In Stock	43,52 kr 36,16 kr 33,41 kr 33,30 kr View 30,55 kr 29,45 kr	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: 52,64 kr 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 about Eaton Electronics eaton s520	Datasheet	166In Stock	52,64 kr 43,63 kr 40,33 kr 39,67 kr View 36,05 kr 30,11 kr	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: 54,18 kr 128In 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 about Eaton Electronics eaton s520	Datasheet	128In Stock	54,18 kr 51,98 kr 43,41 kr 39,01 kr View 34,07 kr 32,09 kr 30,11 kr	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: 62,64 kr 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 about Eaton Electronics eaton s520	Datasheet	1In Stock	62,64 kr 55,06 kr 42,20 kr 38,79 kr View 34,07 kr 32,20 kr 32,09 kr	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: 68,69 kr 1In 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 about Eaton Electronics eaton s520	Datasheet	1In Stock	68,69 kr 61,21 kr 60,99 kr 43,19 kr View 36,82 kr 34,29 kr 32,75 kr	Min.: 1 Mult.: 1	S520	Ceramic Fuses	12.5 A		5 mm x 20 mm							Bulk
Cartridge Fuses 10A 420V FAST ACTING BK-S520-10-R Eaton Electronics 1: 54,95 kr 200On Order	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 about Eaton Electronics eaton s520	Datasheet	200On Order	54,95 kr 50,44 kr 49,67 kr 41,32 kr View 38,03 kr 33,41 kr 31,43 kr 29,45 kr	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 20A 420V FAST ACTING BK-S520-20-R Eaton Electronics 1: 58,25 kr 172On Order	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 about Eaton Electronics eaton s520	Datasheet	172On Order On Order Ship Dates Mfr. No: BK-S520-20-R Stock: 0 On Order: 100 Expected 2026-10-23 72 Expected 2026-11-04 Factory Lead Time: 12 Weeks	58,25 kr 48,36 kr 44,62 kr 37,04 kr View 34,07 kr 30,00 kr	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: 112,87 kr 105On Order	Mfr. Part No. S520-10-R Mouser Part No 504-S520-10-R	Eaton Electronics	Cartridge Fuses S520 420Vac, 10A, standard Learn More about Eaton Electronics eaton s520	Datasheet	105On Order	112,87 kr 69,13 kr 61,98 kr 54,73 kr 53,85 kr	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 S520 420Vac, 16A, standard S520-16-R Eaton Electronics 1: 112,87 kr 250Expected 2026-12-23	Mfr. Part No. S520-16-R Mouser Part No 504-S520-16-R	Eaton Electronics	Cartridge Fuses S520 420Vac, 16A, standard Learn More about Eaton Electronics eaton s520	Datasheet	250Expected 2026-12-23	112,87 kr 68,58 kr 61,76 kr 54,73 kr 53,85 kr	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 16A 420V FAST ACTING BK-S520-V-16-R Eaton Electronics 1: 34,95 kr 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 about Eaton Electronics eaton s520	Datasheet	Non-Stocked Lead-Time 12 Weeks	34,95 kr 31,43 kr 30,11 kr	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: 62,64 kr 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 about Eaton Electronics eaton s520	Datasheet	Non-Stocked Lead-Time 12 Weeks	62,64 kr 55,06 kr 50,77 kr 42,20 kr View 38,36 kr 34,07 kr 32,09 kr 31,98 kr	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: 29,89 kr 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 about Eaton Electronics eaton s520	Datasheet	Non-Stocked Lead-Time 12 Weeks	29,89 kr	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: 29,89 kr 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 about Eaton Electronics eaton s520	Datasheet	Non-Stocked Lead-Time 12 Weeks	29,89 kr	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: 29,89 kr 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 about Eaton Electronics eaton s520	Datasheet	Non-Stocked Lead-Time 12 Weeks	29,89 kr	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: 32,09 kr 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 about Eaton Electronics eaton s520	Datasheet	Non-Stocked Lead-Time 12 Weeks	32,09 kr	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: 29,89 kr 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 about Eaton Electronics eaton s520	Datasheet	Non-Stocked Lead-Time 12 Weeks	29,89 kr	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: 29,89 kr 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 about Eaton Electronics eaton s520	Datasheet	Non-Stocked Lead-Time 12 Weeks	29,89 kr	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: 112,87 kr 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 about Eaton Electronics eaton s520	Datasheet	Non-Stocked Lead-Time 12 Weeks	112,87 kr 73,30 kr 66,16 kr 58,91 kr View 54,73 kr 53,85 kr	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: 112,87 kr 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 about Eaton Electronics eaton s520	Datasheet	Non-Stocked Lead-Time 12 Weeks	112,87 kr 83,30 kr 66,38 kr 63,74 kr View 61,54 kr 59,57 kr 57,70 kr 56,05 kr Quote	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, 20A, standard S520-20-R Eaton Electronics 1: 112,87 kr 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 about Eaton Electronics eaton s520	Datasheet	Non-Stocked Lead-Time 12 Weeks	112,87 kr 74,95 kr 68,14 kr 61,10 kr View 57,04 kr 54,84 kr 53,85 kr	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: 112,87 kr 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 about Eaton Electronics eaton s520	Datasheet	Non-Stocked Lead-Time 12 Weeks	112,87 kr 89,57 kr 86,71 kr 77,92 kr View 73,85 kr 71,76 kr 69,46 kr 67,59 kr Quote	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: 30,77 kr 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 about Eaton Electronics eaton s520	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel 30,77 kr	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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