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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: 362,093

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Part #

Connectorized Surge Protectors Type N M/F Coaxial RF Surge Protector, 10MHz - 1GHz, DC Block, 1.5kW, 3.5mJ, 20kA, Blocking Cap, Bracket Up, Hole Mount

IS-B50LN-C0-MA
PolyPhaser
1: $145.46
9In Stock
New Product

Mfr. Part #
IS-B50LN-C0-MA

Mouser Part #
44-IS-B50LN-C0-MA

New Product

PolyPhaser

Connectorized Surge Protectors Type N M/F Coaxial RF Surge Protector, 10MHz - 1GHz, DC Block, 1.5kW, 3.5mJ, 20kA, Blocking Cap, Bracket Up, Hole Mount

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Datasheet

9In Stock

$145.46

$137.97

Min.: 1
Mult.: 1

Connectorized Surge Protectors Outdoor Twisted Pair Lightning Surge Protector, 2 Pair 100Base-T Ethernet, 1 Pair 48Vdc, UL 497B

IX-2H1DC48
PolyPhaser
1: $241.97
5In Stock
New Product

Mfr. Part #
IX-2H1DC48

Mouser Part #
44-IX-2H1DC48

New Product

PolyPhaser

Connectorized Surge Protectors Outdoor Twisted Pair Lightning Surge Protector, 2 Pair 100Base-T Ethernet, 1 Pair 48Vdc, UL 497B

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Datasheet

5In Stock

$241.97

$231.73

Min.: 1
Mult.: 1

Connectorized Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, 1.8GHz - 6GHz, DC Block, 10W, IP67, .5uJ, 18kA, Filter

LSXL-ME
PolyPhaser
1: $201.41
5In Stock
New Product

Mfr. Part #
LSXL-ME

Mouser Part #
44-LSXL-ME

New Product

PolyPhaser

Connectorized Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, 1.8GHz - 6GHz, DC Block, 10W, IP67, .5uJ, 18kA, Filter

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Datasheet

5In Stock

$201.41

$191.04

Min.: 1
Mult.: 1

Surge Protection Accessories Transition Clamp with Shims to Connect Copper to Galvanized Tower Legs for 2 1/4 to 3 1/4 inch

TK-3
PolyPhaser
1: $65.88
9In Stock
New Product

Mfr. Part #
TK-3

Mouser Part #
44-TK-3

New Product

PolyPhaser

Surge Protection Accessories Transition Clamp with Shims to Connect Copper to Galvanized Tower Legs for 2 1/4 to 3 1/4 inch

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Datasheet

9In Stock

$65.88

$61.48

$58.90

$58.89

Quote

Min.: 1
Mult.: 1

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

TSX-NFM-BF
PolyPhaser
1: $214.85
6In Stock
New Product

Mfr. Part #
TSX-NFM-BF

Mouser Part #
44-TSX-NFM-BF

New Product

PolyPhaser

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

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Datasheet

6In Stock

$214.85

$203.79

Min.: 1
Mult.: 1

Connectorized Surge Protectors 4.3-10 M/F Coaxial RF Surge Protector, 100MHz - 520MHz, DC Block, 750W, 20kA, Bracket Down

VHF50B43-MA-BD
PolyPhaser
1: $303.49
6In Stock
New Product

Mfr. Part #
VHF50B43-MA-BD

Mouser Part #
44-VHF50B43-MA-BD

New Product

PolyPhaser

Connectorized Surge Protectors 4.3-10 M/F Coaxial RF Surge Protector, 100MHz - 520MHz, DC Block, 750W, 20kA, Bracket Down

Datasheet

6In Stock

$303.49

$290.65

Min.: 1
Mult.: 1

Connectorized Surge Protectors 7/16 M/F Coaxial RF Surge Protector, 100MHz - 512MHz, DC Block, 750W, IP67, .5uJ, 20kA, Filter, Low PIM -150 dBc, Bracket Down, Hole Mount

VHF50D-MA-PGR
PolyPhaser
1: $285.04
4In Stock
New Product

Mfr. Part #
VHF50D-MA-PGR

Mouser Part #
44-VHF50D-MA-PGR

New Product

PolyPhaser

Connectorized Surge Protectors 7/16 M/F Coaxial RF Surge Protector, 100MHz - 512MHz, DC Block, 750W, IP67, .5uJ, 20kA, Filter, Low PIM -150 dBc, Bracket Down, Hole Mount

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Datasheet

4In Stock

$285.04

$272.97

Min.: 1
Mult.: 1

Circuit Breakers 508,DM,24VDC,CL,10-12-15,ATX

REX22D-TD1-100-DC24V-10A/12A/15A-E
E-T-A
1: $119.78
4In Stock
16On Order
New Product

Mfr. Part #
REX22D-TD1-100-DC24V-10A/12A/15A-E

Mouser Part #
457-REX22DTD1101215E

New Product

E-T-A

Circuit Breakers 508,DM,24VDC,CL,10-12-15,ATX

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Datasheet

4In Stock

16On Order

$119.78

$98.97

$97.54

$91.99

Min.: 1
Mult.: 1

Circuit Breakers 508,DM,24VDC,CL,12-16-20,ATX

REX22D-TD1-100-DC24V-12A/16A/20A-E
E-T-A
1: $119.78
5In Stock
New Product

Mfr. Part #
REX22D-TD1-100-DC24V-12A/16A/20A-E

Mouser Part #
457-REX22DTD1121620E

New Product

E-T-A

Circuit Breakers 508,DM,24VDC,CL,12-16-20,ATX

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Datasheet

5In Stock

$119.78

$98.97

Min.: 1
Mult.: 1

Industrial Surge Protectors VAL-SPP-T2-275-1+1-UT-R

1466212
Phoenix Contact
1: $242.39
5In Stock
New Product

Mfr. Part #
1466212

Mouser Part #
651-1466212

New Product

Phoenix Contact

Industrial Surge Protectors VAL-SPP-T2-275-1+1-UT-R

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Datasheet

5In Stock

$242.39

Min.: 1
Mult.: 1

Industrial Surge Protectors VAL-US-SPP-240D/65/3+0-R

1790787
Phoenix Contact
1: $390.53
3In Stock
3Expected 8/31/2026
New Product

Mfr. Part #
1790787

Mouser Part #
651-1790787

New Product

Phoenix Contact

Industrial Surge Protectors VAL-US-SPP-240D/65/3+0-R

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Datasheet

3In Stock

3Expected 8/31/2026

$390.53

$358.80

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 18 V, 0.6 pF, 10 kV

AQ3118-02JTG
Littelfuse
1: $1.61
2,673In Stock
New Product

Mfr. Part #
AQ3118-02JTG

Mouser Part #
576-AQ3118-02JTG

New Product

Littelfuse

ESD Protection Diodes / TVS Diodes 18 V, 0.6 pF, 10 kV

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Datasheet

2,673In Stock

Cut Tape

$1.61

$1.01

$0.666

$0.519

Reel

$0.359

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

SMBJ85CA-E
Littelfuse
1: $0.78
2,320In 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

2,320In Stock

Cut Tape

$0.78

$0.475

$0.302

$0.228

Reel

$0.139

View

Min.: 1
Mult.: 1

: 3,000

Varistors MOV 270V 20mm 6.5KA 10% Silcn Coatng Strt Leads AEC-Q200

271KH20-AT
YAGEO
1: $2.69
300In Stock
750On Order
New Product

Mfr. Part #
271KH20-AT

Mouser Part #
603-271KH20-AT

New Product

YAGEO

Varistors MOV 270V 20mm 6.5KA 10% Silcn Coatng Strt Leads AEC-Q200

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Datasheet

300In Stock

750On Order

$2.69

$1.66

$1.15

$1.07

View

Min.: 1
Mult.: 1

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

511KH10-AT
YAGEO
1: $1.21
2,650In 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

2,650In Stock

400On Order

$1.21

$0.725

$0.464

$0.43

View

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes ESD 5V BI SOD323

CDSOD323-T12C-Q
Bourns
1: $1.55
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

$1.55

$0.963

$0.632

$0.489

Reel

$0.386

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

CDSOT23-SM712-Q
Bourns
1: $1.96
1,452In 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

Learn More

Datasheet

1,452In Stock

24,000On Order

Cut Tape

$1.96

$1.24

$0.822

$0.642

Reel

$0.503

View

Min.: 1
Mult.: 1

: 3,000

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 450A

PF-1NH100E450B2
Bourns
1: $474.20
4In Stock
New Product

Mfr. Part #
PF-1NH100E450B2

Mouser Part #
652-PF-1NH100E450B2

New Product

Bourns

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 450A

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Datasheet

4In Stock

$474.20

$377.07

$347.48

Min.: 1
Mult.: 1

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 500A

PF-1NH100E500B2
Bourns
1: $474.20
4In Stock
New Product

Mfr. Part #
PF-1NH100E500B2

Mouser Part #
652-PF-1NH100E500B2

New Product

Bourns

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 500A

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Datasheet

4In Stock

$474.20

$377.07

$347.48

Min.: 1
Mult.: 1

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

ESR3XLDB0315XI
Littelfuse
1: $753.66
3In Stock
New Product

Mfr. Part #
ESR3XLDB0315XI

Mouser Part #
576-ESR3XLDB0315XI

New Product

Littelfuse

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

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Datasheet

3In Stock

$753.66

$618.84

$563.30

Quote

Min.: 1
Mult.: 1

Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 500A

ESR3XLUB0500XI
Littelfuse
1: $791.05
3In Stock
New Product

Mfr. Part #
ESR3XLUB0500XI

Mouser Part #
576-ESR3XLUB0500XI

New Product

Littelfuse

Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 500A

Learn More

Datasheet

3In Stock

$791.05

$673.31

$603.69

Quote

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 4V, 0.55pF, 20A, SOD882

SC4340L-01ETG
Littelfuse
1: $0.806
6,980In Stock
New Product

Mfr. Part #
SC4340L-01ETG

Mouser Part #
576-SC4340L-01ETG

New Product

Littelfuse

ESD Protection Diodes / TVS Diodes 4V, 0.55pF, 20A, SOD882

Learn More

6,980In Stock

Cut Tape

$0.806

$0.489

$0.312

$0.259

Reel

$0.144

View

Min.: 1
Mult.: 1

: 10,000

ESD Protection Diodes / TVS Diodes "20 V, 50pF, 5A,"

SP1120-01WTG
Littelfuse
1: $0.351
7,629In Stock
New Product

Mfr. Part #
SP1120-01WTG

Mouser Part #
576-SP1120-01WTG

New Product

Littelfuse

ESD Protection Diodes / TVS Diodes "20 V, 50pF, 5A,"

Learn More

7,629In Stock

Cut Tape

$0.351

$0.212

$0.166

$0.159

View

Reel

$0.114

Min.: 1
Mult.: 1

: 10,000

ESD Protection Diodes / TVS Diodes 4V, 0.45pF, 20A, Flipchip

SP4340L-01WTG
Littelfuse
1: $0.39
7,614In Stock
New Product

Mfr. Part #
SP4340L-01WTG

Mouser Part #
576-SP4340L-01WTG

New Product

Littelfuse

ESD Protection Diodes / TVS Diodes 4V, 0.45pF, 20A, Flipchip

Learn More

7,614In Stock

Cut Tape

$0.39

$0.242

$0.191

$0.181

View

Reel

$0.131

Min.: 1
Mult.: 1

: 10,000

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 350A

PF-01N100E350B2
Bourns
1: $432.95
6In Stock
New Product

Mfr. Part #
PF-01N100E350B2

Mouser Part #
652-PF-01N100E350B2

New Product

Bourns

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 350A

Learn More

Datasheet

6In Stock

$432.95

$359.22

$306.67

Min.: 1
Mult.: 1

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