.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: 362,125

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 #

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

IX-2H1DC48
PolyPhaser
1: $253.14
5In Stock
New Product

Mfr. Part No.
IX-2H1DC48

Mouser Part No
44-IX-2H1DC48

New Product

PolyPhaser

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

Learn More

Datasheet

5In Stock

$253.14

$242.42

Min.: 1
Mult.: 1

Connectorised 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: $210.70
5In Stock
New Product

Mfr. Part No.
LSXL-ME

Mouser Part No
44-LSXL-ME

New Product

PolyPhaser

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

Learn More

Datasheet

5In Stock

$210.70

$199.85

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: $68.92
9In Stock
New Product

Mfr. Part No.
TK-3

Mouser Part No
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

Learn More

Datasheet

9In Stock

$68.92

$64.31

$61.62

$61.61

Quote

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, w/ Bracket

TSX-NFM-BF
PolyPhaser
1: $224.77
6In Stock
New Product

Mfr. Part No.
TSX-NFM-BF

Mouser Part No
44-TSX-NFM-BF

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, w/ Bracket

Learn More

Datasheet

6In Stock

$224.77

$213.19

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, Low PIM, Hole Mount

TSX-NFM-P
PolyPhaser
1: $199.00
5In Stock
50Expected 6/8/2026
New Product

Mfr. Part No.
TSX-NFM-P

Mouser Part No
44-TSX-NFM-P

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, Low PIM, Hole Mount

Learn More

Datasheet

5In Stock

50Expected 6/8/2026

$199.00

$188.75

Min.: 1
Mult.: 1

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

VHF50B43-MA-BD
PolyPhaser
1: $317.49
6In Stock
New Product

Mfr. Part No.
VHF50B43-MA-BD

Mouser Part No
44-VHF50B43-MA-BD

New Product

PolyPhaser

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

Datasheet

6In Stock

$317.49

$304.07

Min.: 1
Mult.: 1

Connectorised 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: $298.19
4In Stock
New Product

Mfr. Part No.
VHF50D-MA-PGR

Mouser Part No
44-VHF50D-MA-PGR

New Product

PolyPhaser

Connectorised 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

Learn More

Datasheet

4In Stock

$298.19

$285.57

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: $125.31
4In Stock
16On Order
New Product

Mfr. Part No.
REX22D-TD1-100-DC24V-10A/12A/15A-E

Mouser Part No
457-REX22DTD1101215E

New Product

E-T-A

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

Learn More

Datasheet

4In Stock

16On Order

$125.31

$103.54

$102.04

$96.23

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: $125.31
5In Stock
New Product

Mfr. Part No.
REX22D-TD1-100-DC24V-12A/16A/20A-E

Mouser Part No
457-REX22DTD1121620E

New Product

E-T-A

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

Learn More

Datasheet

5In Stock

$125.31

$103.54

Min.: 1
Mult.: 1

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

1466212
Phoenix Contact
1: $253.57
5In Stock
New Product

Mfr. Part No.
1466212

Mouser Part No
651-1466212

New Product

Phoenix Contact

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

Learn More

Datasheet

5In Stock

$253.57

Min.: 1
Mult.: 1

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

1790787
Phoenix Contact
1: $408.56
3In Stock
3Expected 27/8/2026
New Product

Mfr. Part No.
1790787

Mouser Part No
651-1790787

New Product

Phoenix Contact

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

Learn More

Datasheet

3In Stock

3Expected 27/8/2026

$408.56

$375.36

Min.: 1
Mult.: 1

Varistors MLV, 0402, 33V

B72590X0330S060
TDK
1: $0.177
7,000In Stock
New Product

Mfr. Part No.
B72590X0330S060

Mouser Part No
871-B72590X0330S060

New Product

TDK

Varistors MLV, 0402, 33V

Datasheet

7,000In Stock

Cut Tape

$0.177

$0.117

$0.087

$0.079

View

Reel

$0.056

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

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

AQ3118-02JTG
Littelfuse
1: $1.69
2,673In Stock
New Product

Mfr. Part No.
AQ3118-02JTG

Mouser Part No
576-AQ3118-02JTG

New Product

Littelfuse

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

Learn More

Datasheet

2,673In Stock

Cut Tape

$1.69

$1.06

$0.696

$0.543

Reel

$0.375

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: $0.816
2,320In Stock
New Product

Mfr. Part No.
SMBJ85CA-E

Mouser Part No
576-SMBJ85CAE

New Product

Littelfuse

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

Datasheet

2,320In Stock

Cut Tape

$0.816

$0.496

$0.316

$0.238

Reel

$0.146

View

Min.: 1
Mult.: 1

: 3,000

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

271KH20-AT
YAGEO
1: $2.82
300In Stock
750On Order
New Product

Mfr. Part No.
271KH20-AT

Mouser Part No
603-271KH20-AT

New Product

YAGEO

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

Learn More

Datasheet

300In Stock

750On Order

$2.82

$1.74

$1.20

$1.12

View

Min.: 1
Mult.: 1

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

511KH10-AT
YAGEO
1: $1.26
2,650In Stock
400On Order
New Product

Mfr. Part No.
511KH10-AT

Mouser Part No
603-511KH10-AT

New Product

YAGEO

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

Learn More

Datasheet

2,650In Stock

400On Order

$1.26

$0.759

$0.486

$0.45

View

Min.: 1
Mult.: 1

Varistors MOV 910V 20mm 6.5KA 10% Silcn Coatng Strt Leads AEC-Q200

911KH20-AT
YAGEO
1: $3.41
325In Stock
675On Order
New Product

Mfr. Part No.
911KH20-AT

Mouser Part No
603-911KH20-AT

New Product

YAGEO

Varistors MOV 910V 20mm 6.5KA 10% Silcn Coatng Strt Leads AEC-Q200

Learn More

Datasheet

325In Stock

675On Order

$3.41

$2.12

$1.90

$1.56

View

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes ESD 5V BI SOD323

CDSOD323-T12C-Q
Bourns
1: $1.62
2,083In Stock
New Product

Mfr. Part No.
CDSOD323-T12C-Q

Mouser Part No
652-CDSOD323-T12C-Q

New Product

Bourns

ESD Protection Diodes / TVS Diodes ESD 5V BI SOD323

Learn More

Datasheet

2,083In Stock

Cut Tape

$1.62

$1.01

$0.661

$0.511

Reel

$0.404

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

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

CDSOT23-SM712-Q
Bourns
1: $2.05
1,972In Stock
24,000On Order
New Product

Mfr. Part No.
CDSOT23-SM712-Q

Mouser Part No
652-CDSOT23-SM712-Q

New Product

Bourns

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

Learn More

Datasheet

1,972In Stock

24,000On Order

Cut Tape

$2.05

$1.30

$0.86

$0.672

Reel

$0.526

View

Min.: 1
Mult.: 1

: 3,000

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 450A

PF-1NH100E450B2
Bourns
1: $496.09
4In Stock
New Product

Mfr. Part No.
PF-1NH100E450B2

Mouser Part No
652-PF-1NH100E450B2

New Product

Bourns

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 450A

Learn More

Datasheet

4In Stock

$496.09

$394.47

$363.51

Min.: 1
Mult.: 1

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 500A

PF-1NH100E500B2
Bourns
1: $496.09
4In Stock
New Product

Mfr. Part No.
PF-1NH100E500B2

Mouser Part No
652-PF-1NH100E500B2

New Product

Bourns

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 500A

Learn More

Datasheet

4In Stock

$496.09

$394.47

$363.51

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors Glass Encapsulated NTC Thermistor, Probe, Surface Mount 15K4

20012616-00
TE Connectivity
1: $519.64
1In Stock
New Product

Mfr. Part No.
20012616-00

Mouser Part No
571-20012616-00

New Product

TE Connectivity

NTC (Negative Temperature Coefficient) Thermistors Glass Encapsulated NTC Thermistor, Probe, Surface Mount 15K4

Learn More

Datasheet

1In Stock

$519.64

$475.08

$437.62

$410.30

View

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes DIO TVS VWM 03V 400W BIDIR SOD323 AUTO GRADE

CDSOD323-T03SC-Q
Bourns
1: $1.63
2,100In Stock
New Product

Mfr. Part No.
CDSOD323-T03SC-Q

Mouser Part No
652-CDSOD323-T03SC-Q

New Product

Bourns

ESD Protection Diodes / TVS Diodes DIO TVS VWM 03V 400W BIDIR SOD323 AUTO GRADE

Learn More

Datasheet

2,100In Stock

Cut Tape

$1.63

$1.02

$0.67

$0.522

Reel

$0.404

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes DIO TVS VWM 36V 400W BIDIR SOD323 AUTO GRADE

CDSOD323-T36SC-Q
Bourns
1: $1.63
2,100In Stock
New Product

Mfr. Part No.
CDSOD323-T36SC-Q

Mouser Part No
652-CDSOD323-T36SC-Q

New Product

Bourns

ESD Protection Diodes / TVS Diodes DIO TVS VWM 36V 400W BIDIR SOD323 AUTO GRADE

Learn More

Datasheet

2,100In Stock

Cut Tape

$1.63

$1.02

$0.67

$0.522

Reel

$0.404

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 400A

PF-01N100E400B2
Bourns
1: $474.56
6In Stock
New Product

Mfr. Part No.
PF-01N100E400B2

Mouser Part No
652-PF-01N100E400B2

New Product

Bourns

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 400A

Learn More

Datasheet

6In Stock

$474.56

$395.57

$336.11

Min.: 1
Mult.: 1

Circuit Protection

Types of Circuit Protection

Customer Service Office

Company

Resources

Support