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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: 359,629

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Part #

ESD Protection Diodes / TVS Diodes TVS SURF MT DO214AA - SMBJ85CA CR T&R

SMBJ85CA-E
Littelfuse
1: $0.60
2,312In Stock
New Product

Mfr. Part #
SMBJ85CA-E

Mouser Part #
576-SMBJ85CAE

New Product

Littelfuse

ESD Protection Diodes / TVS Diodes TVS SURF MT DO214AA - SMBJ85CA CR T&R

Datasheet

2,312In Stock

Cut Tape

$0.60

$0.312

$0.232

$0.175

Reel

$0.094

View

Min.: 1
Mult.: 1

: 3,000

Varistors MOV 510V 10mm 2.5KA 10% Silcn Coatng Strt Leads AEC-Q200

511KH10-AT
YAGEO
1: $0.93
2,630In Stock
400On Order
New Product

Mfr. Part #
511KH10-AT

Mouser Part #
603-511KH10-AT

New Product

YAGEO

Varistors MOV 510V 10mm 2.5KA 10% Silcn Coatng Strt Leads AEC-Q200

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Datasheet

2,630In Stock

400On Order

$0.93

$0.558

$0.357

$0.331

View

Min.: 1
Mult.: 1

NTC Thermistors Assembly Probe EP1 Type R0=30kOhms 3% Temp. Range -30 to 120

PB2EP-43-EP1
Shibaura Electronics
1: $6.06
100In Stock
New Product

Mfr. Part #
PB2EP-43-EP1

Mouser Part #
603-PB2EP-43-EP1

New Product

Shibaura Electronics

NTC Thermistors Assembly Probe EP1 Type R0=30kOhms 3% Temp. Range -30 to 120

Learn More

Datasheet

100In Stock

$6.06

$5.52

$4.69

$4.49

View

Min.: 1
Mult.: 1

NTC Thermistors Assembly Probe EPW1 Type R50=3.485kOhms 2% Temp. Range -20 to 120

PB3M-42D-EPW1
Shibaura Electronics
1: $5.05
100In Stock
New Product

Mfr. Part #
PB3M-42D-EPW1

Mouser Part #
603-PB3M-42D-EPW1

New Product

Shibaura Electronics

NTC Thermistors Assembly Probe EPW1 Type R50=3.485kOhms 2% Temp. Range -20 to 120

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Datasheet

100In Stock

$5.05

$4.60

$3.90

$3.74

View

Min.: 1
Mult.: 1

Industrial Surge Protectors SFP2-1S-1-10A-120AC-UT

1292457
Phoenix Contact
1: $225.57
1In Stock
9On Order
New Product

Mfr. Part #
1292457

Mouser Part #
651-1292457

New Product

Phoenix Contact

Industrial Surge Protectors SFP2-1S-1-10A-120AC-UT

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Datasheet

1In Stock

9On Order

$225.57

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes ESD 5V BI SOD323

CDSOD323-T12C-Q
Bourns
1: $1.19
2,081In Stock
New Product

Mfr. Part #
CDSOD323-T12C-Q

Mouser Part #
652-CDSOD323-T12C-Q

New Product

Bourns

ESD Protection Diodes / TVS Diodes ESD 5V BI SOD323

Learn More

Datasheet

2,081In Stock

Cut Tape

$1.19

$0.741

$0.486

$0.376

Reel

$0.297

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes TVS 7V/12V AEC-Q101

CDSOT23-SM712-Q
Bourns
1: $1.51
890In Stock
24,000On Order
New Product

Mfr. Part #
CDSOT23-SM712-Q

Mouser Part #
652-CDSOT23-SM712-Q

New Product

Bourns

ESD Protection Diodes / TVS Diodes TVS 7V/12V AEC-Q101

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Datasheet

890In Stock

24,000On Order

Cut Tape

$1.51

$0.837

$0.632

$0.494

Reel

$0.354

$0.342

Min.: 1
Mult.: 1

: 3,000

Circuit Breakers LG 3 POLE 150KA FRAME ONLY

LGU3630NN
Eaton Electrical
1: $14,032.90
1In Stock
New Product

Mfr. Part #
LGU3630NN

Mouser Part #
504-LGU3630NN

New Product

Eaton Electrical

Circuit Breakers LG 3 POLE 150KA FRAME ONLY

Datasheet

1In Stock

$14,032.90

Min.: 1
Mult.: 1

Connectorized Surge Protectors

P8AX09-N/FF/HE
Citel
1: $154.65
4In Stock
New At Mouser

Mfr. Part #
P8AX09-N/FF/HE

Mouser Part #
703-P8AX09-N/FF/HE

New At Mouser

Citel

Connectorized Surge Protectors

Datasheet

4In Stock

$154.65

$128.23

$121.01

$92.54

Min.: 1
Mult.: 1

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

SMBJ33A-E
Littelfuse
1: $0.51
2,083In Stock
New Product

Mfr. Part #
SMBJ33A-E

Mouser Part #
576-SMBJ33AE

New Product

Littelfuse

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

Datasheet

2,083In Stock

Cut Tape

$0.51

$0.269

$0.20

$0.152

Reel

$0.08

View

Min.: 1
Mult.: 1

: 3,000

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

PDG23G0150TFFJ
Eaton Electrical
1: $1,124.89
3In Stock
New Product

Mfr. Part #
PDG23G0150TFFJ

Mouser Part #
504-PDG23G0150TFFJ

New Product

Eaton Electrical

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

Datasheet

3In Stock

$1,124.89

Min.: 1
Mult.: 1

Power Outlet Strips 3-Phase Managed Rack PDU G4 240/415V 42 Outlets 24A/32A 17.3kW 532P6W Input 10ft. Cord 0U Vertical TAA

EVMAG332X
Eaton
1: $2,959.28
1In Stock
New Product

Mfr. Part #
EVMAG332X

Mouser Part #
545-EVMAG332X

New Product

Eaton

Power Outlet Strips 3-Phase Managed Rack PDU G4 240/415V 42 Outlets 24A/32A 17.3kW 532P6W Input 10ft. Cord 0U Vertical TAA

Datasheet

1In Stock

$2,959.28

View

Min.: 1
Mult.: 1

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

PDG23F0200TFFJ
Eaton Electrical
1: $1,113.74
2In Stock
New Product

Mfr. Part #
PDG23F0200TFFJ

Mouser Part #
504-PDG23F0200TFFJ

New Product

Eaton Electrical

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

Datasheet

2In Stock

$1,113.74

Min.: 1
Mult.: 1

Connectorized Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, Slim Line GDT technology

3406.00.0036
HUBER+SUHNER
1: $257.62
8In Stock
New Product

Mfr. Part #
3406.00.0036

Mouser Part #
455-3406000036

New Product

HUBER+SUHNER

Connectorized Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, Slim Line GDT technology

Learn More

Datasheet

8In Stock

$257.62

$233.24

$224.22

Min.: 1
Mult.: 1

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

PDG33G0250B2NJ
Eaton Electrical
1: $2,567.41
1In Stock
New Product

Mfr. Part #
PDG33G0250B2NJ

Mouser Part #
504-PDG33G0250B2NJ

New Product

Eaton Electrical

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

Datasheet

1In Stock

$2,567.41

$2,392.68

Min.: 1
Mult.: 1

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

SMC5K54CAHM3/I
Vishay
1: $2.90
2,240In Stock
New Product

Mfr. Part #
SMC5K54CAHM3/I

Mouser Part #
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

$2.90

$1.88

$1.38

$1.17

Reel

$0.941

View

Min.: 1
Mult.: 1

: 3,500

Connectorized Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, Slim Line GDT technology

3406.00.0037
HUBER+SUHNER
1: $265.45
52In Stock
20Expected 10/29/2026
New Product

Mfr. Part #
3406.00.0037

Mouser Part #
455-3406000037

New Product

HUBER+SUHNER

Connectorized Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, Slim Line GDT technology

Learn More

Datasheet

52In Stock

20Expected 10/29/2026

$265.45

$240.33

$231.03

Min.: 1
Mult.: 1

Circuit Breakers TYPE FD BRK 3P 20A 600VAC MAX 18K AIC

FD3020
Eaton Electrical
1: $1,812.91
2In Stock
New Product

Mfr. Part #
FD3020

Mouser Part #
504-FD3020

New Product

Eaton Electrical

Circuit Breakers TYPE FD BRK 3P 20A 600VAC MAX 18K AIC

Datasheet

2In Stock

$1,812.91

Min.: 1
Mult.: 1

Circuit Breakers 2P 250AMP HMCP

HM2P250J5
Eaton Electrical
1: $2,309.15
1In Stock
New Product

Mfr. Part #
HM2P250J5

Mouser Part #
504-HM2P250J5

New Product

Eaton Electrical

Circuit Breakers 2P 250AMP HMCP

Datasheet

1In Stock

$2,309.15

$2,205.91

Min.: 1
Mult.: 1

Circuit Breakers PDG1,4P0%N,80A,25KA/480V,FXFXTMTU

PDG10F0080TFFJ
Eaton Electrical
1: $1,042.75
2In Stock
New Product

Mfr. Part #
PDG10F0080TFFJ

Mouser Part #
504-PDG10F0080TFFJ

New Product

Eaton Electrical

Circuit Breakers PDG1,4P0%N,80A,25KA/480V,FXFXTMTU

Datasheet

2In Stock

$1,042.75

Min.: 1
Mult.: 1

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

EGS3100FFG
Eaton Electrical
1: $1,187.86
3In Stock
New Product

Mfr. Part #
EGS3100FFG

Mouser Part #
504-EGS3100FFG

New Product

Eaton Electrical

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

Datasheet

3In Stock

$1,187.86

Min.: 1
Mult.: 1

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

NZMN1-A80-NA
Eaton Electrical
1: $2,630.87
2In Stock
New Product

Mfr. Part #
NZMN1-A80-NA

Mouser Part #
504-NZMN1-A80-NA

New Product

Eaton Electrical

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

Datasheet

2In Stock

$2,630.87

Min.: 1
Mult.: 1

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

PDG22K0125TFFJ
Eaton Electrical
1: $991.37
5In Stock
New Product

Mfr. Part #
PDG22K0125TFFJ

Mouser Part #
504-PDG22K0125TFFJ

New Product

Eaton Electrical

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

Datasheet

5In Stock

$991.37

Min.: 1
Mult.: 1

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

PDG23G0150P2ML
Eaton Electrical
1: $2,136.94
1In Stock
New Product

Mfr. Part #
PDG23G0150P2ML

Mouser Part #
504-PDG23G0150P2ML

New Product

Eaton Electrical

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

Datasheet

1In Stock

$2,136.94

$1,991.51

Min.: 1
Mult.: 1

NTC Thermistors NTC Mini Ni 0.4 ld 10K 1 % Tp 0.4e/1e A

NTCLE213E3103FHT1A
Vishay / BC Components
1: $1.73
2,695In Stock
New Product

Mfr. Part #
NTCLE213E3103FHT1A

Mouser Part #
594-NTCLE213E313FHT1

New Product

Vishay / BC Components

NTC Thermistors NTC Mini Ni 0.4 ld 10K 1 % Tp 0.4e/1e A

Datasheet

2,695In Stock

$1.73

$1.30

$1.04

$0.981

View

Min.: 1
Mult.: 1

Circuit Protection

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