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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: 362,125

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Part #

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

ESR3XLUB0250XI
Littelfuse
1: $710.49
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

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Datasheet

3In Stock

$710.49

$583.39

$531.05

Quote

Min.: 1
Mult.: 1

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

471KH10-AT
YAGEO
1: $1.26
1,180In Stock
1,200On Order
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

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Datasheet

1,180In Stock

1,200On Order

$1.26

$0.758

$0.476

$0.418

View

Min.: 1
Mult.: 1

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

471KH20-AT
YAGEO
1: $2.83
372In Stock
675On Order
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

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Datasheet

372In Stock

675On Order

$2.83

$1.75

$1.21

$1.13

View

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes ESD 5V BI SOD323

CDSOD323-T05C-Q
Bourns
1: $1.62
209In 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

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Datasheet

209In Stock

12,000Expected 10/11/2026

Cut Tape

$1.62

$1.01

$0.661

$0.511

Reel

$0.404

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes DIO TVS VWM 12V 400W BIDIR SOD323 AUTO GRADE

CDSOD323-T12SC-Q
Bourns
1: $1.63
2,100In Stock
New Product

Mfr. Part No.
CDSOD323-T12SC-Q

Mouser Part No
652-CDSOD323-T12SC-Q

New Product

Bourns

ESD Protection Diodes / TVS Diodes DIO TVS VWM 12V 400W BIDIR SOD323 AUTO GRADE

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Datasheet

2,100In Stock

Cut Tape

$1.63

$1.02

$0.67

$0.522

Reel

$0.404

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 315A

PF-01N100E315B2
Bourns
1: $452.93
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

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Datasheet

6In Stock

$452.93

$375.80

$320.82

Min.: 1
Mult.: 1

Circuit Breakers LG 3 POLE 150KA FRAME ONLY

LGU3630NN
Eaton Electrical
1: $19,084.74
1In Stock
New Product

Mfr. Part No.
LGU3630NN

Mouser Part No
504-LGU3630NN

New Product

Eaton Electrical

Circuit Breakers LG 3 POLE 150KA FRAME ONLY

Datasheet

1In Stock

$19,084.74

Min.: 1
Mult.: 1

Connectorised Surge Protectors Outdoor Twisted Pair Lightning Surge Protector, 1 Pair 100Base-T, 1 Pair 56Vdc, Isolated Ground, UL497B

IX-2H1DC56-IG/W
PolyPhaser
1: $381.86
1In Stock
New Product

Mfr. Part No.
IX-2H1DC56-IG/W

Mouser Part No
44-IX-2H1DC56-IG/W

New Product

PolyPhaser

Connectorised Surge Protectors Outdoor Twisted Pair Lightning Surge Protector, 1 Pair 100Base-T, 1 Pair 56Vdc, Isolated Ground, UL497B

Datasheet

1In Stock

$381.86

$365.70

Min.: 1
Mult.: 1

Connectorised Surge Protectors

P8AX09-N/FF/HE
Citel
1: $210.32
4In Stock
New At Mouser

Mfr. Part No.
P8AX09-N/FF/HE

Mouser Part No
703-P8AX09-N/FF/HE

New At Mouser

Citel

Connectorised Surge Protectors

Datasheet

4In Stock

$210.32

$174.39

$164.57

$125.85

Min.: 1
Mult.: 1

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5000V 5KV 1-POLE THROU

B88069X5913S102
TDK
1: $8.61
69In Stock
New Product

Mfr. Part No.
B88069X5913S102

Mouser Part No
871-B88069X5913S102

New Product

TDK

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 5000V 5KV 1-POLE THROU

Datasheet

69In Stock

$8.61

$8.09

$7.81

$6.07

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Min.: 1
Mult.: 1

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3 ELECT / 1100v

B88069X7931T702
TDK
1: $6.42
467In Stock
New Product

Mfr. Part No.
B88069X7931T702

Mouser Part No
871-B88069X7931T702

New Product

TDK

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3 ELECT / 1100v

Datasheet

467In Stock

Cut Tape

$6.42

$5.96

$5.75

$4.47

Reel

$2.88

View

Min.: 1
Mult.: 1

: 700

ESD Protection Diodes / TVS Diodes TVS SURF MT DO214AA - SMBJ33A 3K T&R

SMBJ33A-E
Littelfuse
1: $0.694
2,083In Stock
New Product

Mfr. Part No.
SMBJ33A-E

Mouser Part No
576-SMBJ33AE

New Product

Littelfuse

ESD Protection Diodes / TVS Diodes TVS SURF MT DO214AA - SMBJ33A 3K T&R

Datasheet

2,083In Stock

Cut Tape

$0.694

$0.366

$0.272

$0.207

Reel

$0.109

View

Min.: 1
Mult.: 1

: 3,000

Circuit Breakers PDG2,3P,150A,35KA/480V,PXR25LSI

PDG23G0150P2ML
Eaton Electrical
1: $2,906.24
1In Stock
New Product

Mfr. Part No.
PDG23G0150P2ML

Mouser Part No
504-PDG23G0150P2ML

New Product

Eaton Electrical

Circuit Breakers PDG2,3P,150A,35KA/480V,PXR25LSI

Datasheet

1In Stock

$2,906.24

$2,708.45

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 5KW, 33V 5%,BIDIR,SMC TVS

SMC5K33CAHM3/I
Vishay
1: $2.48
6,927In Stock
New Product

Mfr. Part No.
SMC5K33CAHM3/I

Mouser Part No
78-SMC5K33CAHM3/I

New Product

Vishay

ESD Protection Diodes / TVS Diodes 5KW, 33V 5%,BIDIR,SMC TVS

Learn More

Datasheet

6,927In Stock

Cut Tape

$2.48

$2.07

$1.63

$1.39

Reel

$1.30

View

Min.: 1
Mult.: 1

: 3,500

Circuit Breakers PDG3,3P,250A,35KA/480V,PXR10 LSI

PDG33G0250B2NJ
Eaton Electrical
1: $3,491.68
1In Stock
New Product

Mfr. Part No.
PDG33G0250B2NJ

Mouser Part No
504-PDG33G0250B2NJ

New Product

Eaton Electrical

Circuit Breakers PDG3,3P,250A,35KA/480V,PXR10 LSI

Datasheet

1In Stock

$3,491.68

$3,254.04

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 5KW, 54V 5%,BIDIR,SMC TVS

SMC5K54CAHM3/I
Vishay
1: $3.94
2,240In Stock
New Product

Mfr. Part No.
SMC5K54CAHM3/I

Mouser Part No
78-SMC5K54CAHM3/I

New Product

Vishay

ESD Protection Diodes / TVS Diodes 5KW, 54V 5%,BIDIR,SMC TVS

Learn More

Datasheet

2,240In Stock

Cut Tape

$3.94

$2.56

$1.88

$1.59

$1.35

Reel

$1.28

Min.: 1
Mult.: 1

: 3,500

NTC (Negative Temperature Coefficient) Thermistors

NCP02WF104FB5RH
Murata Electronics
1: $0.177
40,229In Stock
New Product

Mfr. Part No.
NCP02WF104FB5RH

Mouser Part No
81-NCP02WF104FB5RH

New Product

Murata Electronics

NTC (Negative Temperature Coefficient) Thermistors

Learn More

Datasheet

40,229In Stock

Cut Tape

$0.177

$0.152

$0.135

$0.11

View

Reel

$0.075

Min.: 1
Mult.: 1

: 20,000

Circuit Breakers E 3P 100A 40kA 415 35kA 480V FXD therm

EGS3100FFG
Eaton Electrical
1: $1,615.49
3In Stock
New Product

Mfr. Part No.
EGS3100FFG

Mouser Part No
504-EGS3100FFG

New Product

Eaton Electrical

Circuit Breakers E 3P 100A 40kA 415 35kA 480V FXD therm

Datasheet

3In Stock

$1,615.49

Min.: 1
Mult.: 1

Circuit Breakers UL/CSA/IEC SLASH RTD TM MCCB 80A 3P

NZMN1-A80-NA
Eaton Electrical
1: $2,356.47
2In Stock
New Product

Mfr. Part No.
NZMN1-A80-NA

Mouser Part No
504-NZMN1-A80-NA

New Product

Eaton Electrical

Circuit Breakers UL/CSA/IEC SLASH RTD TM MCCB 80A 3P

Datasheet

2In Stock

$2,356.47

Min.: 1
Mult.: 1

Circuit Breakers PDG2,2P,125A,50KA/480V,FXFXTMTU

PDG22K0125TFFJ
Eaton Electrical
1: $1,348.26
5In Stock
New Product

Mfr. Part No.
PDG22K0125TFFJ

Mouser Part No
504-PDG22K0125TFFJ

New Product

Eaton Electrical

Circuit Breakers PDG2,2P,125A,50KA/480V,FXFXTMTU

Datasheet

5In Stock

$1,348.26

Min.: 1
Mult.: 1

Circuit Breakers PDG3 PXR25 LSI THREE POLE 600A

PDG3XPXR30600P2M
Eaton Electrical
1: $3,637.78
1In Stock
New Product

Mfr. Part No.
PDG3XPXR30600P2M

Mouser Part No
504-PDG3XPXR30600P2M

New Product

Eaton Electrical

Circuit Breakers PDG3 PXR25 LSI THREE POLE 600A

Datasheet

1In Stock

$3,637.78

Min.: 1
Mult.: 1

PTC (Positive Temperature Coefficient) Thermistors ICL PTC EL LDD 16D5 75R 500 165 T E3

PTCEL67R750LTE
Vishay / BC Components
1: $4.49
1,425In Stock
New Product

Mfr. Part No.
PTCEL67R750LTE

Mouser Part No
594-PTCEL67R750LTE

New Product

Vishay / BC Components

PTC (Positive Temperature Coefficient) Thermistors ICL PTC EL LDD 16D5 75R 500 165 T E3

Learn More

Datasheet

1,425In Stock

Cut Tape

$4.49

$3.74

$3.44

$3.30

Reel

$2.87

View

MouseReel Available

Min.: 1
Mult.: 1

: 500

ESD Protection Diodes / TVS Diodes 5KW, 30V 5%,BIDIR,SMC TVS

SMC5K30CAHM3/I
Vishay
1: $2.48
5,179In Stock
New Product

Mfr. Part No.
SMC5K30CAHM3/I

Mouser Part No
78-SMC5K30CAHM3/I

New Product

Vishay

ESD Protection Diodes / TVS Diodes 5KW, 30V 5%,BIDIR,SMC TVS

Learn More

Datasheet

5,179In Stock

Cut Tape

$2.48

$2.07

$1.63

$1.39

Reel

$1.30

View

Min.: 1
Mult.: 1

: 3,500

Circuit Breakers FD 3P 50AMP 50 DEGREE NAVAL APPLICATION

FD3050VH09
Eaton Electrical
1: $2,650.52
2In Stock
New Product

Mfr. Part No.
FD3050VH09

Mouser Part No
504-FD3050VH09

New Product

Eaton Electrical

Circuit Breakers FD 3P 50AMP 50 DEGREE NAVAL APPLICATION

Datasheet

2In Stock

$2,650.52

Min.: 1
Mult.: 1

Circuit Breakers PDG2,3P,200A,25KA/480V,FXFXTMTU

PDG23F0200TFFJ
Eaton Electrical
1: $1,514.69
2In Stock
New Product

Mfr. Part No.
PDG23F0200TFFJ

Mouser Part No
504-PDG23F0200TFFJ

New Product

Eaton Electrical

Circuit Breakers PDG2,3P,200A,25KA/480V,FXFXTMTU

Datasheet

2In Stock

$1,514.69

Min.: 1
Mult.: 1

Circuit Protection

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