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Circuit Protection

Circuit Protection devices and components are available at Mouser Electronics from industry leading manufacturers. Mouser is an authorized distributor for many circuit protection manufacturers including Analog Devices, Bourns, Eaton, Phoenix Contact, TDK EPCOS, Littelfuse, Vishay, & more.
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Please view our selection of circuit protection devices below.

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Types of Circuit Protection

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Results: 362,009

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Part #

Connectorised Surge Protectors 4.3-10 M/F Coaxial RF Surge Protector, 100MHz - 520MHz, DC Block, 750W, 20kA, Bracket Up

VHF50B43-MA-BU
PolyPhaser
1: £164.61
1In Stock
New Product

Mfr. Part No.
VHF50B43-MA-BU

Mouser Part No
44-VHF50B43-MA-BU

New Product

PolyPhaser

Connectorised Surge Protectors 4.3-10 M/F Coaxial RF Surge Protector, 100MHz - 520MHz, DC Block, 750W, 20kA, Bracket Up

Datasheet

1In Stock

£164.61

£157.65

Min.: 1
Mult.: 1

Circuit Breakers 508,DM,24VDC,CL,1-2-4,ATX,

REX22D-TD2-100-DC24V-1A/2A/4A-E
E-T-A
1: £79.75
4In Stock
New Product

Mfr. Part No.
REX22D-TD2-100-DC24V-1A/2A/4A-E

Mouser Part No
457-REX22DTD2124E

New Product

E-T-A

Circuit Breakers 508,DM,24VDC,CL,1-2-4,ATX,

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Datasheet

4In Stock

£79.75

£66.59

£61.89

Min.: 1
Mult.: 1

Circuit Breakers 508,DM,24VDC,CL,6-8-10,ATX

REX22D-TD2-100-DC24V-6A/8A/10A-E
E-T-A
1: £79.75
7In Stock
New Product

Mfr. Part No.
REX22D-TD2-100-DC24V-6A/8A/10A-E

Mouser Part No
457-REX22DTD26810E

New Product

E-T-A

Circuit Breakers 508,DM,24VDC,CL,6-8-10,ATX

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Datasheet

7In Stock

£79.75

£66.59

£61.89

Min.: 1
Mult.: 1

Circuit Breakers 508,DM,24VDC,CL,2CH,1-10A,ATX

REX22D-TE2-100-DC24V-1A-10A-E
E-T-A
1: £77.95
4In Stock
New Product

Mfr. Part No.
REX22D-TE2-100-DC24V-1A-10A-E

Mouser Part No
457-REX22DTE21A10AE

New Product

E-T-A

Circuit Breakers 508,DM,24VDC,CL,2CH,1-10A,ATX

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Datasheet

4In Stock

£77.95

£64.97

£60.50

Min.: 1
Mult.: 1

Industrial Surge Protectors VAL-SPP-T2-NPE-0+1-UT

1466612
Phoenix Contact
1: £65.09
7In Stock
New Product

Mfr. Part No.
1466612

Mouser Part No
651-1466612

New Product

Phoenix Contact

Industrial Surge Protectors VAL-SPP-T2-NPE-0+1-UT

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Datasheet

7In Stock

£65.09

£63.82

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 400W,10V5%,SMFBIDIRTVS

4SMF10CA-M3/I
Vishay Semiconductors
1: £0.368
6,948In Stock
New Product

Mfr. Part No.
4SMF10CA-M3/I

Mouser Part No
78-4SMF10CA-M3/I

New Product

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 400W,10V5%,SMFBIDIRTVS

Datasheet

6,948In Stock

Cut Tape

£0.368

£0.254

£0.125

£0.104

Reel

£0.047

View

Min.: 1
Mult.: 1

: 10,000

Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 315A

ESR3XLUB0315XI
Littelfuse
1: £438.80
2In Stock
1Expected 03/09/2026
New Product

Mfr. Part No.
ESR3XLUB0315XI

Mouser Part No
576-ESR3XLUB0315XI

New Product

Littelfuse

Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 315A

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Datasheet

2In Stock

1Expected 03/09/2026

£438.80

£360.30

£327.97

Quote

Min.: 1
Mult.: 1

Varistors MOV 390V 20mm 6.5KA 10% Silcn Coatng Strt Leads AEC-Q200

391KH20-AT
YAGEO
1: £1.56
300In Stock
750Expected 29/07/2026
New Product

Mfr. Part No.
391KH20-AT

Mouser Part No
603-391KH20-AT

New Product

YAGEO

Varistors MOV 390V 20mm 6.5KA 10% Silcn Coatng Strt Leads AEC-Q200

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Datasheet

300In Stock

750Expected 29/07/2026

£1.56

£0.969

£0.666

£0.622

View

Min.: 1
Mult.: 1

Industrial Surge Protectors SFP2-1S-1-20A-230AC-UT

1292605
Phoenix Contact
1: £192.55
2In Stock
24Expected 26/10/2026
New Product

Mfr. Part No.
1292605

Mouser Part No
651-1292605

New Product

Phoenix Contact

Industrial Surge Protectors SFP2-1S-1-20A-230AC-UT

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Datasheet

2In Stock

24Expected 26/10/2026

£192.55

Min.: 1
Mult.: 1

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 400A

PF-1NH100E400B2
Bourns
1: £273.86
4In Stock
New Product

Mfr. Part No.
PF-1NH100E400B2

Mouser Part No
652-PF-1NH100E400B2

New Product

Bourns

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 400A

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Datasheet

4In Stock

£273.86

£217.76

£200.68

Min.: 1
Mult.: 1

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 550A

PF-1NH100E550B2
Bourns
1: £273.86
4In Stock
New Product

Mfr. Part No.
PF-1NH100E550B2

Mouser Part No
652-PF-1NH100E550B2

New Product

Bourns

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 550A

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Datasheet

4In Stock

£273.86

£217.76

£200.68

Min.: 1
Mult.: 1

Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 250A

ESR3XLUB0250XI
Littelfuse
1: £392.22
3In Stock
New Product

Mfr. Part No.
ESR3XLUB0250XI

Mouser Part No
576-ESR3XLUB0250XI

New Product

Littelfuse

Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 250A

Learn More

Datasheet

3In Stock

£392.22

£322.06

£293.16

Quote

Min.: 1
Mult.: 1

Varistors MOV 470V 10mm 2.5KA 10% Silcn Coatng Strt Leads AEC-Q200

471KH10-AT
YAGEO
1: £0.698
1,330In Stock
1,200Expected 29/07/2026
New Product

Mfr. Part No.
471KH10-AT

Mouser Part No
603-471KH10-AT

New Product

YAGEO

Varistors MOV 470V 10mm 2.5KA 10% Silcn Coatng Strt Leads AEC-Q200

Learn More

Datasheet

1,330In Stock

1,200Expected 29/07/2026

£0.698

£0.418

£0.263

£0.23

View

Min.: 1
Mult.: 1

Varistors MOV 470V 20mm 6.5KA 10% Silcn Coatng Strt Leads AEC-Q200

471KH20-AT
YAGEO
1: £1.56
375In Stock
675Expected 29/07/2026
New Product

Mfr. Part No.
471KH20-AT

Mouser Part No
603-471KH20-AT

New Product

YAGEO

Varistors MOV 470V 20mm 6.5KA 10% Silcn Coatng Strt Leads AEC-Q200

Learn More

Datasheet

375In Stock

675Expected 29/07/2026

£1.56

£0.969

£0.666

£0.622

View

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes ESD 5V BI SOD323

CDSOD323-T05C-Q
Bourns
1: £0.89
628In Stock
12,000Expected 10/11/2026
New Product

Mfr. Part No.
CDSOD323-T05C-Q

Mouser Part No
652-CDSOD323-T05C-Q

New Product

Bourns

ESD Protection Diodes / TVS Diodes ESD 5V BI SOD323

Learn More

Datasheet

628In Stock

12,000Expected 10/11/2026

Cut Tape

£0.89

£0.556

£0.365

£0.282

Reel

£0.223

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 315A

PF-01N100E315B2
Bourns
1: £250.04
6In Stock
New Product

Mfr. Part No.
PF-01N100E315B2

Mouser Part No
652-PF-01N100E315B2

New Product

Bourns

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 315A

Learn More

Datasheet

6In Stock

£250.04

£207.46

£177.11

Min.: 1
Mult.: 1

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 250A

PF-01N100E250B2
Bourns
1: £238.03
6In Stock
New Product

Mfr. Part No.
PF-01N100E250B2

Mouser Part No
652-PF-01N100E250B2

New Product

Bourns

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 250A

Learn More

Datasheet

6In Stock

£238.03

£196.54

£168.63

£159.86

Min.: 1
Mult.: 1

Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 450A

ESR3XLUB0450XI
Littelfuse
1: £461.21
3In Stock
New Product

Mfr. Part No.
ESR3XLUB0450XI

Mouser Part No
576-ESR3XLUB0450XI

New Product

Littelfuse

Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 450A

Learn More

Datasheet

3In Stock

£461.21

£378.71

£344.72

Quote

Min.: 1
Mult.: 1

SCRs 8A 800V Std TO-251 V-PAK

SJ8008VTP
Littelfuse
1: £2.33
750Expected 03/08/2026
New Product

Mfr. Part No.
SJ8008VTP

Mouser Part No
576-SJ8008VTP

New Product

Littelfuse

SCRs 8A 800V Std TO-251 V-PAK

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Datasheet

750Expected 03/08/2026

£2.33

£1.52

£1.05

£0.871

View

Min.: 1
Mult.: 1

Varistors MOV 240V 20mm 6.5KA 10% Silcn Coatng Strt Leads AEC-Q200

241KH20-AT
YAGEO
1: £1.55
300In Stock
750Expected 29/07/2026
New Product

Mfr. Part No.
241KH20-AT

Mouser Part No
603-241KH20-AT

New Product

YAGEO

Varistors MOV 240V 20mm 6.5KA 10% Silcn Coatng Strt Leads AEC-Q200

Learn More

Datasheet

300In Stock

750Expected 29/07/2026

£1.55

£0.96

£0.662

£0.618

View

Min.: 1
Mult.: 1

Varistors MOV 430V 20mm 6.5KA 10% Silcn Coatng Strt Leads AEC-Q200

431KH20-AT
YAGEO
1: £1.56
300In Stock
750Expected 29/07/2026
New Product

Mfr. Part No.
431KH20-AT

Mouser Part No
603-431KH20-AT

New Product

YAGEO

Varistors MOV 430V 20mm 6.5KA 10% Silcn Coatng Strt Leads AEC-Q200

Learn More

Datasheet

300In Stock

750Expected 29/07/2026

£1.56

£0.969

£0.666

£0.622

View

Min.: 1
Mult.: 1

Varistors MOV 560V 20mm 6.5KA 10% Silcn Coatng Strt Leads AEC-Q200

561KH20-AT
YAGEO
1: £1.60
250In Stock
750Expected 29/07/2026
New Product

Mfr. Part No.
561KH20-AT

Mouser Part No
603-561KH20-AT

New Product

YAGEO

Varistors MOV 560V 20mm 6.5KA 10% Silcn Coatng Strt Leads AEC-Q200

Learn More

Datasheet

250In Stock

750Expected 29/07/2026

£1.60

£0.995

£0.89

£0.738

View

Min.: 1
Mult.: 1

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 600A

PF-1NH100E600B2
Bourns
1: £273.86
4In Stock
New Product

Mfr. Part No.
PF-1NH100E600B2

Mouser Part No
652-PF-1NH100E600B2

New Product

Bourns

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 600A

Learn More

Datasheet

4In Stock

£273.86

£217.76

£200.68

Min.: 1
Mult.: 1

Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL DIN 315A

ESR3XLDB0315XI
Littelfuse
1: £435.26
3In Stock
New Product

Mfr. Part No.
ESR3XLDB0315XI

Mouser Part No
576-ESR3XLDB0315XI

New Product

Littelfuse

Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL DIN 315A

Learn More

Datasheet

3In Stock

£435.26

£357.40

£325.32

Quote

Min.: 1
Mult.: 1

Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 500A

ESR3XLUB0500XI
Littelfuse
1: £456.85
3In Stock
New Product

Mfr. Part No.
ESR3XLUB0500XI

Mouser Part No
576-ESR3XLUB0500XI

New Product

Littelfuse

Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 500A

Learn More

Datasheet

3In Stock

£456.85

£388.85

£348.65

Quote

Min.: 1
Mult.: 1

Circuit Protection

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