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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: 359,642

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Part #

Surge Protection Accessories IX Series Pole Mount Kit

IX-POLE-KIT
PolyPhaser
1: €58.27
10In Stock
New Product

Mfr. Part No.
IX-POLE-KIT

Mouser Part No
44-IX-POLE-KIT

New Product

PolyPhaser

Surge Protection Accessories IX Series Pole Mount Kit

Datasheet

10In Stock

€58.27

€55.17

Min.: 1
Mult.: 1

Connectorised Surge Protectors Outdoor Twisted Pair Lightning Surge Protector, 4 Pair Gigabit Ethernet, PoE, UL 497B

IXG-05
PolyPhaser
1: €164.14
5In Stock
25On Order
New Product

Mfr. Part No.
IXG-05

Mouser Part No
44-IXG-05

New Product

PolyPhaser

Connectorised Surge Protectors Outdoor Twisted Pair Lightning Surge Protector, 4 Pair Gigabit Ethernet, PoE, UL 497B

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Datasheet

5In Stock

25On Order

€164.14

€157.20

Min.: 1
Mult.: 1

Surge Protection Accessories Transition Clamp with Shims to Connect Copper to Galvanized Tower Legs for 1 1/4 to 2 1/4 inch

TK-2
PolyPhaser
1: €42.05
10In Stock
New Product

Mfr. Part No.
TK-2

Mouser Part No
44-TK-2

New Product

PolyPhaser

Surge Protection Accessories Transition Clamp with Shims to Connect Copper to Galvanized Tower Legs for 1 1/4 to 2 1/4 inch

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Datasheet

10In Stock

€42.05

€39.23

€37.58

Min.: 1
Mult.: 1

Connectorised Surge Protectors 7/16 F/M Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, DC Block, 500W, IP67, .005uJ, 40kA, Filter, Low PIM

TSX-DFM
PolyPhaser
1: €198.06
5In Stock
New Product

Mfr. Part No.
TSX-DFM

Mouser Part No
44-TSX-DFM

New Product

PolyPhaser

Connectorised Surge Protectors 7/16 F/M Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, DC Block, 500W, IP67, .005uJ, 40kA, Filter, Low PIM

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Datasheet

5In Stock

€198.06

€189.68

Min.: 1
Mult.: 1

Connectorised Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, DC Block, 500W, IP67, .005uJ, 40kA, Filter

TSX-NFM
PolyPhaser
1: €119.92
9In Stock
New Product

Mfr. Part No.
TSX-NFM

Mouser Part No
44-TSX-NFM

New Product

PolyPhaser

Connectorised Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, DC Block, 500W, IP67, .005uJ, 40kA, Filter

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Datasheet

9In Stock

€119.92

€113.74

Min.: 1
Mult.: 1

Connectorised Surge Protectors Type N M/F Coaxial RF Surge Protector, 0.5MHz - 1GHz, DC Block, 750W, IP67, 15mJ, 20kA, Filter, Bracket Down, Hole Mount

VUF50NHP-MA
PolyPhaser
1: €249.61
3In Stock
New Product

Mfr. Part No.
VUF50NHP-MA

Mouser Part No
44-VUF50NHP-MA

New Product

PolyPhaser

Connectorised Surge Protectors Type N M/F Coaxial RF Surge Protector, 0.5MHz - 1GHz, DC Block, 750W, IP67, 15mJ, 20kA, Filter, Bracket Down, Hole Mount

Datasheet

3In Stock

€249.61

€239.01

Min.: 1
Mult.: 1

Circuit Breaker Accessories 508, DM, 40A Supply Module, IOLink, ATEX

EM12D-TIO-000-DC24V-40A-E
E-T-A
1: €114.83
6In Stock
New Product

Mfr. Part No.
EM12D-TIO-000-DC24V-40A-E

Mouser Part No
457-EM12DTIO24V4AE

New Product

E-T-A

Circuit Breaker Accessories 508, DM, 40A Supply Module, IOLink, ATEX

Datasheet

6In Stock

€114.83

€97.47

€90.58

Min.: 1
Mult.: 1

Circuit Breaker Accessories 508, DM, 40A Supply Module, Modbus, ATEX

EM12D-TMB-000-DC24V-40A-E
E-T-A
1: €156.24
3In Stock
New Product

Mfr. Part No.
EM12D-TMB-000-DC24V-40A-E

Mouser Part No
457-EM12DTMB24V4AE

New Product

E-T-A

Circuit Breaker Accessories 508, DM, 40A Supply Module, Modbus, ATEX

Datasheet

3In Stock

€156.24

€151.92

€135.48

€125.90

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 400W,24V5%,SMFBIDIRTVS

4SMF24CA-M3/I
Vishay Semiconductors
1: €0.43
6,662In Stock
New Product

Mfr. Part No.
4SMF24CA-M3/I

Mouser Part No
78-4SMF24CA-M3/I

New Product

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 400W,24V5%,SMFBIDIRTVS

Datasheet

6,662In Stock

Cut Tape

€0.43

€0.302

€0.148

€0.124

Reel

€0.057

View

Min.: 1
Mult.: 1

: 10,000

ESD Protection Diodes / TVS Diodes 400W,28V5%,SMFBIDIRTVS

4SMF28CA-M3/I
Vishay Semiconductors
1: €0.43
6,832In Stock
New Product

Mfr. Part No.
4SMF28CA-M3/I

Mouser Part No
78-4SMF28CA-M3/I

New Product

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 400W,28V5%,SMFBIDIRTVS

Datasheet

6,832In Stock

Cut Tape

€0.43

€0.302

€0.148

€0.124

Reel

€0.057

View

Min.: 1
Mult.: 1

: 10,000

NTC (Negative Temperature Coefficient) Thermistors SMD NTC Thermistor 0603 47kOhm 1% B-4131 soft

B57359V6473F260
TDK
1: €0.421
2,765In Stock
New Product

Mfr. Part No.
B57359V6473F260

Mouser Part No
871-B57359V6473F260

New Product

TDK

NTC (Negative Temperature Coefficient) Thermistors SMD NTC Thermistor 0603 47kOhm 1% B-4131 soft

Datasheet

2,765In Stock

Cut Tape

€0.421

€0.327

€0.281

€0.231

Reel

€0.177

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

ESR3XLUB0315XI
Littelfuse
1: €502.64
2In Stock
1Expected 29/12/2026
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

Learn More

Datasheet

2In Stock

1Expected 29/12/2026

€502.64

€412.72

€375.68

Quote

Min.: 1
Mult.: 1

Triacs 0.8A 600V Sens SOT-89

LX809MBRP
Littelfuse
1: €1.17
700In Stock
200On Order
New Product

Mfr. Part No.
LX809MBRP

Mouser Part No
576-LX809MBRP

New Product

Littelfuse

Triacs 0.8A 600V Sens SOT-89

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Datasheet

700In Stock

200On Order

Cut Tape

€1.17

€0.72

€0.473

€0.377

Reel

€0.32

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

NTC (Negative Temperature Coefficient) Thermistors Assembly Probe CE2 Type R37=29.37kOhms 2.5% Temp. Range -20 to 90

PT2C-51F-CE2
Shibaura Electronics
1: €5.21
100In Stock
New Product

Mfr. Part No.
PT2C-51F-CE2

Mouser Part No
603-PT2C-51F-CE2

New Product

Shibaura Electronics

NTC (Negative Temperature Coefficient) Thermistors Assembly Probe CE2 Type R37=29.37kOhms 2.5% Temp. Range -20 to 90

Learn More

Datasheet

100In Stock

€5.21

€4.75

€4.03

€3.86

View

Min.: 1
Mult.: 1

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

1292605
Phoenix Contact
1: €220.56
2In Stock
24On Order
New Product

Mfr. Part No.
1292605

Mouser Part No
651-1292605

New Product

Phoenix Contact

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

Learn More

Datasheet

2In Stock

24On Order

€220.56

Min.: 1
Mult.: 1

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 550A

PF-1NH100E550B2
Bourns
1: €313.70
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

Learn More

Datasheet

4In Stock

€313.70

€249.44

€229.87

Min.: 1
Mult.: 1

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

ESR3XLUB0250XI
Littelfuse
1: €449.28
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

€449.28

€368.91

€335.81

Quote

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 7V & 12V 75pF 20A SOT23-3L

SC712-02HTG
Littelfuse
1: €1.12
2,084In Stock
100Expected 17/11/2026
New Product

Mfr. Part No.
SC712-02HTG

Mouser Part No
576-SC712-02HTG

New Product

Littelfuse

ESD Protection Diodes / TVS Diodes 7V & 12V 75pF 20A SOT23-3L

Learn More

Datasheet

2,084In Stock

100Expected 17/11/2026

Cut Tape

€1.12

€0.703

€0.461

€0.359

Reel

€0.278

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

NTC (Negative Temperature Coefficient) Thermistors Assembly Probe HT1 Type R100=3.3kOhms 2.5% Temp. Range -20 to 180

PT3H-51F-HT1
Shibaura Electronics
1: €5.21
100In Stock
New Product

Mfr. Part No.
PT3H-51F-HT1

Mouser Part No
603-PT3H-51F-HT1

New Product

Shibaura Electronics

NTC (Negative Temperature Coefficient) Thermistors Assembly Probe HT1 Type R100=3.3kOhms 2.5% Temp. Range -20 to 180

Learn More

Datasheet

100In Stock

€5.21

€4.75

€4.03

€3.86

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors Assembly Probe EP1 Type R100=3.3kOhms 5% Temp. Range -30 to 120

PT3M-51F-EP1
Shibaura Electronics
1: €5.21
50In Stock
New Product

Mfr. Part No.
PT3M-51F-EP1

Mouser Part No
603-PT3M-51F-EP1

New Product

Shibaura Electronics

NTC (Negative Temperature Coefficient) Thermistors Assembly Probe EP1 Type R100=3.3kOhms 5% Temp. Range -30 to 120

Learn More

Datasheet

50In Stock

€5.21

€4.75

€4.03

€3.86

View

Min.: 1
Mult.: 1

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

CDSOD323-T12SC-Q
Bourns
1: €1.03
2,040In 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

Learn More

Datasheet

2,040In Stock

Cut Tape

€1.03

€0.645

€0.424

€0.33

Reel

€0.255

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes 5V, 6A, SOD882

SC1003-01ETG
Littelfuse
1: €0.516
10,080In Stock
New Product

Mfr. Part No.
SC1003-01ETG

Mouser Part No
576-SC1003-01ETG

New Product

Littelfuse

ESD Protection Diodes / TVS Diodes 5V, 6A, SOD882

Learn More

Datasheet

10,080In Stock

Cut Tape

€0.516

€0.316

€0.201

€0.168

Reel

€0.094

View

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

NTC (Negative Temperature Coefficient) Thermistors Assembly Probe MG1 Type R180=1.247kOhms 3% Temp. Range -40 to 200

PL3C-312-MG1
Shibaura Electronics
1: €10.42
100In Stock
New Product

Mfr. Part No.
PL3C-312-MG1

Mouser Part No
603-PL3C-312-MG1

New Product

Shibaura Electronics

NTC (Negative Temperature Coefficient) Thermistors Assembly Probe MG1 Type R180=1.247kOhms 3% Temp. Range -40 to 200

Learn More

Datasheet

100In Stock

€10.42

€9.49

€8.07

€7.71

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors Assembly Probe MP3 Type R200=1.0kOhms 5% Temp. Range -40 to 200

PL3FC-312-MP3
Shibaura Electronics
1: €10.42
100In Stock
New Product

Mfr. Part No.
PL3FC-312-MP3

Mouser Part No
603-PL3FC-312-MP3

New Product

Shibaura Electronics

NTC (Negative Temperature Coefficient) Thermistors Assembly Probe MP3 Type R200=1.0kOhms 5% Temp. Range -40 to 200

Learn More

Datasheet

100In Stock

€10.42

€9.49

€8.07

€7.71

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors Assembly Probe KN3 Type R100=3.3kOhms 2.5% Temp. Range -20 to 300

PT3M-51F-KN3
Shibaura Electronics
1: €5.21
100In Stock
New Product

Mfr. Part No.
PT3M-51F-KN3

Mouser Part No
603-PT3M-51F-KN3

New Product

Shibaura Electronics

NTC (Negative Temperature Coefficient) Thermistors Assembly Probe KN3 Type R100=3.3kOhms 2.5% Temp. Range -20 to 300

Learn More

Datasheet

100In Stock

€5.21

€4.75

€4.03

€3.86

View

Min.: 1
Mult.: 1

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