.hide-partial { max-height: none; } .show-more { display: none; }

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.
More...

Please view our selection of circuit protection devices below.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Circuit Protection

List Images

Results: 359,634

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

Filter by

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

Resettable Fuses - PPTC 6V 3.0A-HD 40A MAX

MF-LSMF300X-2
Bourns
1: $1.26
7,590In Stock

Mfr. Part No.
MF-LSMF300X-2

Mouser Part No
652-MF-LSMF300X-2

Bourns

Resettable Fuses - PPTC 6V 3.0A-HD 40A MAX

Learn More

Datasheet

7,590In Stock

Cut Tape

$1.26

$0.964

$0.904

$0.683

View

Reel

$0.446

MouseReel Available

Min.: 1
Mult.: 1

: 6,000

Resettable Fuses - PPTC PTC RESETTABLE 2.5A 30V RADIAL LEADED

MF-R250-0-14
Bourns
1: $0.884
7,891In Stock

Mfr. Part No.
MF-R250-0-14

Mouser Part No
652-MF-R250-0-14

Bourns

Resettable Fuses - PPTC PTC RESETTABLE 2.5A 30V RADIAL LEADED

Learn More

Datasheet

7,891In Stock

$0.884

$0.67

$0.628

$0.475

View

Min.: 1
Mult.: 1

Resettable Fuses - PPTC PTC 2.0A 16V RADIAL LEADED HI-TEMP

MF-RHT200-2
Bourns
1: $1.02
11,280In Stock

Mfr. Part No.
MF-RHT200-2

Mouser Part No
652-MF-RHT200-2

Bourns

Resettable Fuses - PPTC PTC 2.0A 16V RADIAL LEADED HI-TEMP

Learn More

Datasheet

11,280In Stock

Cut Tape

$1.02

$0.782

$0.733

$0.554

Reel

$0.403

View

Min.: 1
Mult.: 1

: 3,000

Resettable Fuses - PPTC PTC 0.12A 250V RADIAL LEADED TELECOM

MF-RX012/250-2
Bourns
1: $0.666
14,614In Stock

Mfr. Part No.
MF-RX012/250-2

Mouser Part No
652-MF-RX012/250-2

Bourns

Resettable Fuses - PPTC PTC 0.12A 250V RADIAL LEADED TELECOM

Learn More

Datasheet

14,614In Stock

Cut Tape

$0.666

$0.602

$0.548

$0.507

View

Reel

$0.303

Min.: 1
Mult.: 1

: 6,000

Resettable Fuses - PPTC 72V 1.6A-HD 40A MAX

MF-RX160/72-0
Bourns
1: $0.462
11,411In Stock

Mfr. Part No.
MF-RX160/72-0

Mouser Part No
652-MF-RX160/72-0

Bourns

Resettable Fuses - PPTC 72V 1.6A-HD 40A MAX

Learn More

Datasheet

11,411In Stock

$0.462

$0.42

$0.407

$0.366

View

Min.: 1
Mult.: 1

Resettable Fuses - PPTC 60V 1.85A-HD 40A MAX

MF-RX185/72-0
Bourns
1: $0.449
12,663In Stock

Mfr. Part No.
MF-RX185/72-0

Mouser Part No
652-MF-RX185/72-0

Bourns

Resettable Fuses - PPTC 60V 1.85A-HD 40A MAX

Learn More

Datasheet

12,663In Stock

$0.449

$0.409

$0.378

$0.374

View

Min.: 1
Mult.: 1

Resettable Fuses - PPTC PTC RESETTABLE 3.0A 72V RADIAL LEADED

MF-RX300/72-2
Bourns
1: $0.966
7,398In Stock

Mfr. Part No.
MF-RX300/72-2

Mouser Part No
652-MF-RX300/72-2

Bourns

Resettable Fuses - PPTC PTC RESETTABLE 3.0A 72V RADIAL LEADED

Learn More

Datasheet

7,398In Stock

Cut Tape

$0.966

$0.888

$0.737

$0.68

Reel

$0.446

View

Min.: 1
Mult.: 1

: 3,000

Resettable Fuses - PPTC 30V 500MA-HD 20A MAX

MF-USHT050KX-2
Bourns
1: $0.734
25,133In Stock

Mfr. Part No.
MF-USHT050KX-2

Mouser Part No
652-MF-USHT050KX-2

Bourns

Resettable Fuses - PPTC 30V 500MA-HD 20A MAX

Learn More

Datasheet

25,133In Stock

Cut Tape

$0.734

$0.67

$0.556

$0.506

Reel

$0.344

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Varistors PV 300V 10%

PV300K3225R2
Bourns
1: $0.993
8,634In Stock

Mfr. Part No.
PV300K3225R2

Mouser Part No
652-PV300K3225R2

Bourns

Varistors PV 300V 10%

Learn More

Datasheet

8,634In Stock

Cut Tape

$0.993

$0.619

$0.549

$0.513

Reel

$0.471

View

Min.: 1
Mult.: 1

: 1,000

Thermal Cut-offs 77C Low Profile SMD HC TCO

SC77AAB
Bourns
1: $1.51
9,540In Stock

Mfr. Part No.
SC77AAB

Mouser Part No
652-SC77AAB

Bourns

Thermal Cut-offs 77C Low Profile SMD HC TCO

Learn More

Datasheet

9,540In Stock

Cut Tape

$1.51

$1.40

$1.36

$1.15

View

Reel

$0.65

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

Surface Mount Fuses 0.5A Fast Acting 0402 SinglFuse

SF-0402F050-2
Bourns
1: $0.721
14,841In Stock

Mfr. Part No.
SF-0402F050-2

Mouser Part No
652-SF-0402F050-2

Bourns

Surface Mount Fuses 0.5A Fast Acting 0402 SinglFuse

Learn More

Datasheet

14,841In Stock

Cut Tape

$0.721

$0.672

$0.585

$0.54

View

Reel

$0.356

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

Surface Mount Fuses 0.8A Slow Blow 0603 SinglFuse

SF-0603S080-2
Bourns
1: $0.925
16,345In Stock

Mfr. Part No.
SF-0603S080-2

Mouser Part No
652-SF-0603S080-2

Bourns

Surface Mount Fuses 0.8A Slow Blow 0603 SinglFuse

Learn More

Datasheet

16,345In Stock

Cut Tape

$0.925

$0.736

$0.62

$0.544

View

Reel

$0.343

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

Surface Mount Fuses 2.5A Slow Blow 0603 SinglFuse

SF-0603S250-2
Bourns
1: $0.925
17,490In Stock

Mfr. Part No.
SF-0603S250-2

Mouser Part No
652-SF-0603S250-2

Bourns

Surface Mount Fuses 2.5A Slow Blow 0603 SinglFuse

Learn More

Datasheet

17,490In Stock

Cut Tape

$0.925

$0.736

$0.62

$0.544

View

Reel

$0.343

MouseReel Available

Min.: 1
Mult.: 1

: 5,000

Thyristor Surge Protection Devices - TSPD Sidacs Very Low Volt Bidirectional

TISP4025H1BJR-S
Bourns
1: $1.86
9,422In Stock

Mfr. Part No.
TISP4025H1BJR-S

Mouser Part No
652-TISP4025H1BJR-S

Bourns

Thyristor Surge Protection Devices - TSPD Sidacs Very Low Volt Bidirectional

Learn More

Datasheet

9,422In Stock

Cut Tape

$1.86

$1.17

$0.774

$0.602

Reel

$0.477

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Thyristor Surge Protection Devices - TSPD 58V 600mA

TISP4070M3BJR-S
Bourns
1: $1.67
11,885In Stock

Mfr. Part No.
TISP4070M3BJR-S

Mouser Part No
652-TISP4070M3BJR-S

Bourns

Thyristor Surge Protection Devices - TSPD 58V 600mA

Learn More

Datasheet

11,885In Stock

Cut Tape

$1.67

$1.05

$0.69

$0.536

Reel

$0.422

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Thyristor Surge Protection Devices - TSPD BI-DIRECTIONL PRTCTR 120volts

TISP4145M3BJR-S
Bourns
1: $1.67
8,401In Stock

Mfr. Part No.
TISP4145M3BJR-S

Mouser Part No
652-TISP4145M3BJR-S

Bourns

Thyristor Surge Protection Devices - TSPD BI-DIRECTIONL PRTCTR 120volts

Learn More

Datasheet

8,401In Stock

Cut Tape

$1.67

$1.05

$0.69

$0.536

Reel

$0.422

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Connectorised Surge Protectors Din Rail POE Surge Suppressor, Type B

MJ8-POE-B
Citel
1: $159.07
126In Stock

Mfr. Part No.
MJ8-POE-B

Mouser Part No
703-MJ8-POE-B

Citel

Connectorised Surge Protectors Din Rail POE Surge Suppressor, Type B

Learn More

Datasheet

126In Stock

$159.07

$131.91

$121.65

$121.64

View

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 3KW 28V 5% BIDIRECT

SMC3K28CAHM3/57
Vishay Semiconductors
1: $4.53
1,667In Stock

Mfr. Part No.
SMC3K28CAHM3/57

Mouser Part No
78-SMC3K28CAHM3/57

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 3KW 28V 5% BIDIRECT

Learn More

Datasheet

1,667In Stock

Cut Tape

$4.53

$2.46

$2.22

$1.70

Reel

$1.52

$1.51

MouseReel Available

Min.: 1
Mult.: 1

: 850

NTC (Negative Temperature Coefficient) Thermistors

NCP03XH153J05RL
Murata Electronics
1: $0.163
51,917In Stock

Mfr. Part No.
NCP03XH153J05RL

Mouser Part No
81-NCP03XH153J05RL

Murata Electronics

NTC (Negative Temperature Coefficient) Thermistors

Learn More

Datasheet

51,917In Stock

Cut Tape

$0.163

$0.136

$0.12

$0.099

View

Reel

$0.073

MouseReel Available

Min.: 1
Mult.: 1

: 15,000

NTC (Negative Temperature Coefficient) Thermistors 10K OHM 5%

NTCDP4AG103JCDBBA
TDK
1: $10.68
387In Stock

Mfr. Part No.
NTCDP4AG103JCDBBA

Mouser Part No
810-NTCDP4AG103JCDBB

TDK

NTC (Negative Temperature Coefficient) Thermistors 10K OHM 5%

Learn More

Datasheet

387In Stock

$10.68

$9.63

$9.25

$8.79

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 0603 6.8Kohm 5% Thermistor

NTCG164BH682JT1
TDK
1: $1.36
3,952In Stock

Mfr. Part No.
NTCG164BH682JT1

Mouser Part No
810-NTCG164BH682JT1

TDK

NTC (Negative Temperature Coefficient) Thermistors 0603 6.8Kohm 5% Thermistor

Learn More

Datasheet

3,952In Stock

Cut Tape

$1.36

$1.29

$1.21

$1.15

View

Reel

$0.895

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

Connectorised Surge Protectors SURGE,NN,0-1000MHZ

LAIL350NN
TE Connectivity
1: $82.32
35In Stock

Mfr. Part No.
LAIL350NN

Mouser Part No
814-LAIL350NN

TE Connectivity

Connectorised Surge Protectors SURGE,NN,0-1000MHZ

Learn More

Datasheet

35In Stock

$82.32

$75.90

Min.: 1
Mult.: 1

SCRs 800V 25A

2N6509TG
Littelfuse
1: $5.82
896In Stock

Mfr. Part No.
2N6509TG

Mouser Part No
863-2N6509TG

Littelfuse

SCRs 800V 25A

Datasheet

896In Stock

Cut Tape

$5.82

$3.86

$2.75

$2.71

Reel

$2.71

Min.: 1
Mult.: 1

: 1,000

Triacs 16a 50mA 800V IGT 3 QUAD INTERNL ISLTD

BTA16-800BW3G
Littelfuse
1: $6.54
1,459In Stock

Mfr. Part No.
BTA16-800BW3G

Mouser Part No
863-BTA16-800BW3G

Littelfuse

Triacs 16a 50mA 800V IGT 3 QUAD INTERNL ISLTD

Datasheet

1,459In Stock

$6.54

$3.43

$3.13

Min.: 1
Mult.: 1

Triacs ISO TO220 16A 10MA TRIAC

BTA16-800SW3G
Littelfuse
1: $6.92
913In Stock

Mfr. Part No.
BTA16-800SW3G

Mouser Part No
863-BTA16-800SW3G

Littelfuse

Triacs ISO TO220 16A 10MA TRIAC

Datasheet

913In Stock

$6.92

$3.64

$3.41

Min.: 1
Mult.: 1

Circuit Protection

Types of Circuit Protection

Customer Service Office

Company

Resources

Support