.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: 359,338

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 #

Connectorized Surge Protectors UHF F/F Bulkhead Coaxial RF Surge Protector, 1.5MHz - 700MHz, DC Block, 3kW, 20mJ, 50kA, Blocking Cap, Hole Mount

IS-B50HU-C0
PolyPhaser
1: NT$4,998.92
7In Stock
8On Order
New Product

Mfr. Part #
IS-B50HU-C0

Mouser Part #
44-IS-B50HU-C0

New Product

PolyPhaser

Connectorized Surge Protectors UHF F/F Bulkhead Coaxial RF Surge Protector, 1.5MHz - 700MHz, DC Block, 3kW, 20mJ, 50kA, Blocking Cap, Hole Mount

Learn More

Datasheet

7In Stock

8On Order

NT$4,998.92

NT$4,741.52

Min.: 1
Mult.: 1

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

IS-B50LN-C2-MA
PolyPhaser
1: NT$4,072.92
5In Stock
New Product

Mfr. Part #
IS-B50LN-C2-MA

Mouser Part #
44-IS-B50LN-C2-MA

New Product

PolyPhaser

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

Learn More

Datasheet

5In Stock

NT$4,072.92

NT$3,863.20

Min.: 1
Mult.: 1

Circuit Breaker Accessories 508, DM, 20A, Distribution Module, Load, ATEX

PM12-T01-00-LOAD-20A-E
E-T-A
1: NT$1,395.64
7In Stock
New Product

Mfr. Part #
PM12-T01-00-LOAD-20A-E

Mouser Part #
457-PM12T100LOAD2AE

New Product

E-T-A

Circuit Breaker Accessories 508, DM, 20A, Distribution Module, Load, ATEX

Datasheet

7In Stock

NT$1,395.64

NT$1,076.58

NT$1,060.44

NT$1,000.57

Min.: 1
Mult.: 1

Circuit Breakers 508,DM,24VDC,CL,20A,ATX

REX22D-TA1-100-DC24V-20A-E
E-T-A
1: NT$3,139.03
11In Stock
New Product

Mfr. Part #
REX22D-TA1-100-DC24V-20A-E

Mouser Part #
457-REX22DTA120E

New Product

E-T-A

Circuit Breakers 508,DM,24VDC,CL,20A,ATX

Learn More

Datasheet

11In Stock

NT$3,139.03

NT$2,583.71

NT$2,545.71

NT$2,401.23

Min.: 1
Mult.: 1

NTC Thermistors ESA PROBE-RTD PT1000 1000mm ENG MODEL

10219128-01
TE Connectivity
1: NT$17,860.11
1In Stock
New Product

Mfr. Part #
10219128-01

Mouser Part #
571-10219128-01

New Product

TE Connectivity

NTC Thermistors ESA PROBE-RTD PT1000 1000mm ENG MODEL

Learn More

Datasheet

1In Stock

NT$17,860.11

NT$16,328.24

NT$15,040.87

NT$14,101.96

View

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 400W,17V5%,SMFBIDIRTVS

4SMF17CA-M3/I
Vishay Semiconductors
1: NT$17.57
6,860In Stock
New Product

Mfr. Part #
4SMF17CA-M3/I

Mouser Part #
78-4SMF17CA-M3/I

New Product

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 400W,17V5%,SMFBIDIRTVS

Datasheet

6,860In Stock

Cut Tape

NT$17.57

NT$12.12

NT$5.95

NT$4.95

Reel

NT$2.26

View

Min.: 1
Mult.: 1

: 10,000

ESD Protection Diodes / TVS Diodes 400W,18V5%,SMFBIDIRTVS

4SMF18CA-M3/I
Vishay Semiconductors
1: NT$17.57
6,678In Stock
New Product

Mfr. Part #
4SMF18CA-M3/I

Mouser Part #
78-4SMF18CA-M3/I

New Product

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 400W,18V5%,SMFBIDIRTVS

Datasheet

6,678In Stock

Cut Tape

NT$17.57

NT$12.12

NT$5.95

NT$4.95

Reel

NT$2.26

View

Min.: 1
Mult.: 1

: 10,000

Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 450A

ESR3XLUB0450XI
Littelfuse
1: NT$22,023.01
3In Stock
New Product

Mfr. Part #
ESR3XLUB0450XI

Mouser Part #
576-ESR3XLUB0450XI

New Product

Littelfuse

Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 450A

Learn More

Datasheet

3In Stock

NT$22,023.01

NT$18,083.46

NT$16,460.53

Quote

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 30V, 100A ,DNF2020-6L

SC3000-01UTG
Littelfuse
1: NT$57.00
3,100In Stock
New Product

Mfr. Part #
SC3000-01UTG

Mouser Part #
576-SC3000-01UTG

New Product

Littelfuse

ESD Protection Diodes / TVS Diodes 30V, 100A ,DNF2020-6L

Learn More

Datasheet

3,100In Stock

Cut Tape

NT$57.00

NT$36.21

NT$23.88

NT$18.71

Reel

NT$14.56

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

SCRs 8A 800V Std TO-251 V-PAK

SJ8008VTP
Littelfuse
1: NT$111.14
750In Stock
New Product

Mfr. Part #
SJ8008VTP

Mouser Part #
576-SJ8008VTP

New Product

Littelfuse

SCRs 8A 800V Std TO-251 V-PAK

Learn More

Datasheet

750In Stock

NT$111.14

NT$72.42

NT$49.83

NT$41.59

View

Min.: 1
Mult.: 1

NTC Thermistors Assembly Probe MP1 Type R(100) =3.3kOhms +/-5% Temp. Range -30 to 200

PT3FC-51F-MP1
Shibaura Electronics
1: NT$434.50
99In Stock
New Product

Mfr. Part #
PT3FC-51F-MP1

Mouser Part #
603-PT3FC-51F-MP1

New Product

Shibaura Electronics

NTC Thermistors Assembly Probe MP1 Type R(100) =3.3kOhms +/-5% Temp. Range -30 to 200

Learn More

Datasheet

99In Stock

NT$434.50

NT$395.78

NT$336.27

NT$321.22

View

Min.: 1
Mult.: 1

NTC Thermistors Assembly Probe OCK1 Type R200=1.0kOhms 5% Temp. Range -20 to 300

PTM-312-OCK1
Shibaura Electronics
1: NT$217.25
100In Stock
New Product

Mfr. Part #
PTM-312-OCK1

Mouser Part #
603-PTM-312-OCK1

New Product

Shibaura Electronics

NTC Thermistors Assembly Probe OCK1 Type R200=1.0kOhms 5% Temp. Range -20 to 300

Learn More

Datasheet

100In Stock

NT$217.25

NT$197.89

NT$168.14

NT$160.97

View

Min.: 1
Mult.: 1

NTC Thermistors Assembly Probe KN2 Type R100=3.3kOhms 2.5% Temp. Range -20 to 300

PTM-51F-KN2
Shibaura Electronics
1: NT$217.25
99In Stock
New Product

Mfr. Part #
PTM-51F-KN2

Mouser Part #
603-PTM-51F-KN2

New Product

Shibaura Electronics

NTC Thermistors Assembly Probe KN2 Type R100=3.3kOhms 2.5% Temp. Range -20 to 300

Learn More

Datasheet

99In Stock

NT$217.25

NT$197.89

NT$168.14

NT$160.97

View

Min.: 1
Mult.: 1

Industrial Surge Protectors SFP2-1S-1-5A-120AC-UT

1292315
Phoenix Contact
1: NT$7,717.43
5In Stock
New Product

Mfr. Part #
1292315

Mouser Part #
651-1292315

New Product

Phoenix Contact

Industrial Surge Protectors SFP2-1S-1-5A-120AC-UT

Learn More

Datasheet

5In Stock

NT$7,717.43

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes ESD 3.3V BI

CDDFN2-T3V3SC
Bourns
1: NT$15.06
8,400In Stock
New Product

Mfr. Part #
CDDFN2-T3V3SC

Mouser Part #
652-CDDFN2-T3V3SC

New Product

Bourns

ESD Protection Diodes / TVS Diodes ESD 3.3V BI

Learn More

Datasheet

8,400In Stock

Cut Tape

NT$15.06

NT$10.43

NT$5.13

NT$4.27

Reel

NT$1.86

View

MouseReel Available

Min.: 1
Mult.: 1

: 12,000

ESD Protection Diodes / TVS Diodes ESD 5V UNI

CDDFN2-T5V0SC
Bourns
1: NT$13.62
8,393In Stock
New Product

Mfr. Part #
CDDFN2-T5V0SC

Mouser Part #
652-CDDFN2-T5V0SC

New Product

Bourns

ESD Protection Diodes / TVS Diodes ESD 5V UNI

Learn More

Datasheet

8,393In Stock

Cut Tape

NT$13.62

NT$9.46

NT$4.62

NT$3.87

Reel

NT$1.79

View

MouseReel Available

Min.: 1
Mult.: 1

: 12,000

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 600A

PF-1NH100E600B2
Bourns
1: NT$13,077.00
4In Stock
New Product

Mfr. Part #
PF-1NH100E600B2

Mouser Part #
652-PF-1NH100E600B2

New Product

Bourns

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 600A

Learn More

Datasheet

4In Stock

NT$13,077.00

NT$10,398.29

NT$9,582.35

Min.: 1
Mult.: 1

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

ESR3XLUB0315XI
Littelfuse
1: NT$20,952.89
2In Stock
1Expected 9/17/2026
New Product

Mfr. Part #
ESR3XLUB0315XI

Mouser Part #
576-ESR3XLUB0315XI

New Product

Littelfuse

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

Learn More

Datasheet

2In Stock

1Expected 9/17/2026

NT$20,952.89

NT$17,204.77

NT$15,660.71

Quote

Min.: 1
Mult.: 1

Triacs 0.8A 600V Sens SOT-89

LX809MBRP
Littelfuse
1: NT$48.76
700In Stock
200On Order
New Product

Mfr. Part #
LX809MBRP

Mouser Part #
576-LX809MBRP

New Product

Littelfuse

Triacs 0.8A 600V Sens SOT-89

Learn More

Datasheet

700In Stock

200On Order

Cut Tape

NT$48.76

NT$30.01

NT$19.72

NT$15.70

Reel

NT$13.34

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

NTC Thermistors Assembly Probe CE2 Type R37=29.37kOhms 2.5% Temp. Range -20 to 90

PT2C-51F-CE2
Shibaura Electronics
1: NT$217.25
100In Stock
New Product

Mfr. Part #
PT2C-51F-CE2

Mouser Part #
603-PT2C-51F-CE2

New Product

Shibaura Electronics

NTC Thermistors Assembly Probe CE2 Type R37=29.37kOhms 2.5% Temp. Range -20 to 90

Learn More

Datasheet

100In Stock

NT$217.25

NT$197.89

NT$168.14

NT$160.97

View

Min.: 1
Mult.: 1

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

1292605
Phoenix Contact
1: NT$9,194.45
2In Stock
24On Order
New Product

Mfr. Part #
1292605

Mouser Part #
651-1292605

New Product

Phoenix Contact

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

Learn More

Datasheet

2In Stock

24On Order

NT$9,194.45

Min.: 1
Mult.: 1

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 550A

PF-1NH100E550B2
Bourns
1: NT$13,077.00
4In Stock
New Product

Mfr. Part #
PF-1NH100E550B2

Mouser Part #
652-PF-1NH100E550B2

New Product

Bourns

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 550A

Learn More

Datasheet

4In Stock

NT$13,077.00

NT$10,398.29

NT$9,582.35

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes TVS 6KA RATED 700V BI AXIAL

AK6-700C-FL
Littelfuse
1: NT$4,760.16
4In Stock
New Product

Mfr. Part #
AK6-700C-FL

Mouser Part #
576-AK6-700C-FL

New Product

Littelfuse

ESD Protection Diodes / TVS Diodes TVS 6KA RATED 700V BI AXIAL

Learn More

Datasheet

4In Stock

NT$4,760.16

NT$4,345.74

Min.: 1
Mult.: 1

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

ESR3XLUB0250XI
Littelfuse
1: NT$18,728.76
3In Stock
New Product

Mfr. Part #
ESR3XLUB0250XI

Mouser Part #
576-ESR3XLUB0250XI

New Product

Littelfuse

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

Learn More

Datasheet

3In Stock

NT$18,728.76

NT$15,378.22

NT$13,998.71

Quote

Min.: 1
Mult.: 1

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

SC712-02HTG
Littelfuse
1: NT$46.61
2,084In Stock
100Expected 11/17/2026
New Product

Mfr. Part #
SC712-02HTG

Mouser Part #
576-SC712-02HTG

New Product

Littelfuse

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

Learn More

Datasheet

2,084In Stock

100Expected 11/17/2026

Cut Tape

NT$46.61

NT$29.29

NT$19.22

NT$14.99

Reel

NT$11.58

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Circuit Protection

Types of Circuit Protection

Customer Service Office

Company

Resources

Support