.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: 359,631

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 #

NTC (Negative Temperature Coefficient) Thermistors 5k 3988

B57869S0502F140
TDK
1: $3.60
1,789In Stock

Mfr. Part No.
B57869S0502F140

Mouser Part No
871-B57869S502F140

TDK

NTC (Negative Temperature Coefficient) Thermistors 5k 3988

Learn More

Datasheet

1,789In Stock

$3.60

$3.45

$3.26

$3.13

View

Min.: 1
Mult.: 1

Varistors 50VAC 10% 7mm StandarD

B72207S0500K111
TDK
1: $0.462
11,786In Stock

Mfr. Part No.
B72207S0500K111

Mouser Part No
871-B72207S0500K111

TDK

Varistors 50VAC 10% 7mm StandarD

Learn More

Datasheet

11,786In Stock

Cut Tape

$0.462

$0.282

$0.242

$0.223

View

Reel

$0.165

Min.: 1
Mult.: 1

: 6,000

Varistors 250VAC 10% 14mm StandarD

B72214S0251K101
TDK
1: $0.422
14,102In Stock

Mfr. Part No.
B72214S0251K101

Mouser Part No
871-B72214S251K101

TDK

Varistors 250VAC 10% 14mm StandarD

Learn More

Datasheet

14,102In Stock

$0.422

$0.267

$0.216

$0.215

Min.: 1
Mult.: 1

Varistors 300VAC 10% 14mm AdvanceD Thermofused

B72214T2301K105
TDK
1: $3.82
2,121In Stock

Mfr. Part No.
B72214T2301K105

Mouser Part No
871-B72214T2301K105

TDK

Varistors 300VAC 10% 14mm AdvanceD Thermofused

Learn More

Datasheet

2,121In Stock

$3.82

$2.41

$2.14

$1.82

View

Min.: 1
Mult.: 1

Varistors 25VAC 10% 20mm AEC-Q200

B72220S1250K102
TDK
1: $5.43
1,487In Stock

Mfr. Part No.
B72220S1250K102

Mouser Part No
871-B72220S1250K102

TDK

Varistors 25VAC 10% 20mm AEC-Q200

Learn More

Datasheet

1,487In Stock

$5.43

$3.48

$3.13

$2.72

View

Min.: 1
Mult.: 1

Varistors 60VAC 10% 20mm StandarD

B72220S0600K101
TDK
1: $1.39
5,101In Stock

Mfr. Part No.
B72220S0600K101

Mouser Part No
871-B72220S600K101

TDK

Varistors 60VAC 10% 20mm StandarD

Learn More

Datasheet

5,101In Stock

$1.39

$0.903

$0.794

$0.728

View

Min.: 1
Mult.: 1

Varistors 95VAC 10% 20mm StandarD

B72220S0950K101
TDK
1: $1.39
6,630In Stock
4,500Expected 8/10/2026

Mfr. Part No.
B72220S0950K101

Mouser Part No
871-B72220S950K101

TDK

Varistors 95VAC 10% 20mm StandarD

Learn More

Datasheet

6,630In Stock

4,500Expected 8/10/2026

$1.39

$0.903

$0.794

$0.744

View

Min.: 1
Mult.: 1

Varistors 550VAC 10% 40mm High E

B72240L0551K102
TDK
1: $25.42
250In Stock

Mfr. Part No.
B72240L0551K102

Mouser Part No
871-B72240L0551K102

TDK

Varistors 550VAC 10% 40mm High E

Learn More

Datasheet

250In Stock

$25.42

$20.22

$18.55

$17.76

View

Min.: 1
Mult.: 1

Varistors 10mm, 680Vac, 10%, Compact Series

B72310S0681K101
TDK
1: $0.816
8,131In Stock

Mfr. Part No.
B72310S0681K101

Mouser Part No
871-B72310S0681K101

TDK

Varistors 10mm, 680Vac, 10%, Compact Series

Learn More

Datasheet

8,131In Stock

$0.816

$0.522

$0.456

$0.419

View

Min.: 1
Mult.: 1

Varistors 14mm, 350Vac, 10%, AdvanceD Compact Series

B72314S2351K101
TDK
1: $0.626
7,525In Stock

Mfr. Part No.
B72314S2351K101

Mouser Part No
871-B72314S2351K101

TDK

Varistors 14mm, 350Vac, 10%, AdvanceD Compact Series

Learn More

Datasheet

7,525In Stock

$0.626

$0.396

$0.344

$0.309

View

Min.: 1
Mult.: 1

Varistors 0603 4.0V 30A

B72500T0040M060
TDK
1: $0.326
48,316In Stock

Mfr. Part No.
B72500T0040M060

Mouser Part No
871-B72500T40M60

TDK

Varistors 0603 4.0V 30A

Learn More

Datasheet

48,316In Stock

Cut Tape

$0.326

$0.199

$0.17

$0.156

Reel

$0.125

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

Varistors 20Vrms 80A

B72510E0200K062
TDK
1: $0.694
28,129In Stock

Mfr. Part No.
B72510E0200K062

Mouser Part No
871-B72510E0200K062

TDK

Varistors 20Vrms 80A

Learn More

Datasheet

28,129In Stock

Cut Tape

$0.694

$0.431

$0.375

$0.348

Reel

$0.301

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Varistors 1210 58VDC 2000pF 1000A

B72530T6400K062
TDK
1: $1.50
5,824In Stock

Mfr. Part No.
B72530T6400K062

Mouser Part No
871-B72530T6400K062

TDK

Varistors 1210 58VDC 2000pF 1000A

Learn More

Datasheet

5,824In Stock

Cut Tape

$1.50

$0.971

$0.857

$0.801

Reel

$0.681

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,500

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors EM90X

B88069X0190S102
TDK
1: $1.89
1,850In Stock

Mfr. Part No.
B88069X0190S102

Mouser Part No
871-B88069X190S102

TDK

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors EM90X

Datasheet

1,850In Stock

$1.89

$1.44

$1.35

Reel

$1.28

$1.16

View

Min.: 1
Mult.: 1

: 100

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors A71-H25X

B88069X2190T502
TDK
1: $3.26
1,633In Stock

Mfr. Part No.
B88069X2190T502

Mouser Part No
871-B88069X2190T502

TDK

Gas Discharge Tubes - GDTs / Gas Plasma Arrestors A71-H25X

Datasheet

1,633In Stock

Cut Tape

$3.26

$3.01

$2.50

$2.31

Reel

$1.81

View

Min.: 1
Mult.: 1

: 500

Circuit Breakers Cir Brkr Hyd Mag

IAGN66-1-72-30.0
AIRPAX
1: $187.54
25In Stock

Mfr. Part No.
IAGN66-1-72-30.0

Mouser Part No
874-IAGN6617230

AIRPAX

Circuit Breakers Cir Brkr Hyd Mag

Datasheet

25In Stock

$187.54

$170.64

$118.63

Quote

Min.: 1
Mult.: 1

Circuit Breakers CIRCUIT BREAKER

PP21-2-5.00A-OB-V
AIRPAX
1: $58.25
34In Stock

Mfr. Part No.
PP21-2-5.00A-OB-V

Mouser Part No
874-PP21-2-500A-OB-V

AIRPAX

Circuit Breakers CIRCUIT BREAKER

Learn More

Datasheet

34In Stock

$58.25

$53.05

$53.03

$51.19

View

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 1-Line Femto Farad RailClamp w/ EOS

RClamp3361Z.TFT
Semtech
1: $0.857
14,989In Stock

Mfr. Part No.
RClamp3361Z.TFT

Mouser Part No
947-RCLAMP3361Z.TFT

Semtech

ESD Protection Diodes / TVS Diodes 1-Line Femto Farad RailClamp w/ EOS

Learn More

14,989In Stock

Cut Tape

$0.857

$0.613

$0.491

$0.413

View

Reel

$0.257

MouseReel Available

Min.: 1
Mult.: 1

: 15,000

Circuit Breakers MAN-START 600VAC 40AMP IEC

GV3P25
Schneider Electric
1: $509.39
6In Stock

Mfr. Part No.
GV3P25

Mouser Part No
996-GV3P25

Schneider Electric

Circuit Breakers MAN-START 600VAC 40AMP IEC

Learn More

Datasheet

6In Stock

$509.39

Min.: 1
Mult.: 1

Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, Quarter-wave stub technology with integrated high-pass filter

3407.17.0022
HUBER+SUHNER
1: $680.01
11In Stock
2On Order

Mfr. Part No.
3407.17.0022

Mouser Part No
455-3407170022

HUBER+SUHNER

Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, Quarter-wave stub technology with integrated high-pass filter

Learn More

Datasheet

11In Stock

2On Order

$680.01

$639.98

Min.: 1
Mult.: 1

Circuit Breakers Miniaturised single pole thermal circuit breaker with push-to-reset tease free, trip-free, snap action mechanism (R-type TO CBE to EN 60934) for PCB mounting. Approved to CBE standard EN 60934 (IEC 60934). For higher current ratings

104-PR3-10A
E-T-A
1: $30.86
141In Stock

Mfr. Part No.
104-PR3-10A

Mouser Part No
457-104-PR3-10A

E-T-A

Datasheet

141In Stock

$30.86

$24.03

$21.92

$19.76

View

Min.: 1
Mult.: 1

Circuit Breakers Single pole thermal circuit breaker with press-to-reset, tease-free, trip-free, snap action mechanism. Type 2-5700 can be supplied as a push-push switch/circuit breaker (R-type TO CBE to EN 60934 in press-to-reset configuration; S-typ

2-5700-IG2-P10-DD-20A
E-T-A
1: $47.65
108In Stock

Mfr. Part No.
2-5700-IG2-P10-DD-20A

Mouser Part No
457-25700IG2P10DD20A

E-T-A

Datasheet

108In Stock

$47.65

$39.52

$34.05

$30.82

View

Min.: 1
Mult.: 1

Circuit Breakers 1077, 3P, DM, 480VAC/60VDC, D, 30A

4230-T130-K0DE-30A
E-T-A
1: $50.13
140In Stock

Mfr. Part No.
4230-T130-K0DE-30A

Mouser Part No
457-4230T130K0DE30

E-T-A

Circuit Breakers 1077, 3P, DM, 480VAC/60VDC, D, 30A

Learn More

Datasheet

140In Stock

$50.13

$43.74

$40.41

$37.22

View

Min.: 1
Mult.: 1

Circuit Breakers Single pole miniaturised magnetic circuit breakers with unique high-speed operating mechanism and push/pull on/off manual actuation. Fitted with electrically separate excitation and switching circuits, and one pair of auxiliary contac

808-H-0.4A
E-T-A
1: $73.29
168In Stock

Mfr. Part No.
808-H-0.4A

Mouser Part No
457-808-H-0.4A

E-T-A

Datasheet

168In Stock

$73.29

$62.72

$58.02

$51.35

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors Chip with solder-coated wires, 10KOhm +/-1% @ 25 C

NKA103C1B1
Amphenol Advanced Sensors
1: $1.31
11,882In Stock

Mfr. Part No.
NKA103C1B1

Mouser Part No
527-NKA103C1B1

Amphenol Advanced Sensors

NTC (Negative Temperature Coefficient) Thermistors Chip with solder-coated wires, 10KOhm +/-1% @ 25 C

Learn More

Datasheet

11,882In Stock

Cut Tape

$1.31

$1.24

$1.16

$1.11

View

Reel

$0.819

Min.: 1
Mult.: 1

: 4,000

Circuit Protection

Types of Circuit Protection

Customer Service Office

Company

Resources

Support