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Circuit Protection

Circuit Protection devices and components are available at Mouser from industry leading manufacturers. Mouser is an authorized distributor for many circuit protection manufacturers including Bourns, Eaton, TDK, Littelfuse, Semtech, 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: 360,591

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Part #

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

SP1120-01WTG
Littelfuse
1: £0.458
7,629In Stock
New Product

Mfr. Part No.
SP1120-01WTG

Mouser Part No
576-SP1120-01WTG

New Product

Littelfuse

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

Learn More

7,629In Stock

Cut Tape

£0.458

£0.237

£0.176

£0.134

Reel

£0.07

View

Min.: 1
Mult.: 1

: 10,000

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

SP4340L-01WTG
Littelfuse
1: £0.503
7,606In Stock
New Product

Mfr. Part No.
SP4340L-01WTG

Mouser Part No
576-SP4340L-01WTG

New Product

Littelfuse

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

Learn More

7,606In Stock

Cut Tape

£0.503

£0.264

£0.196

£0.149

Reel

£0.079

View

Min.: 1
Mult.: 1

: 10,000

Connectorised Surge Protectors

P8AX09-N/FF/HE
Citel
1: £116.11
3In Stock
New At Mouser

Mfr. Part No.
P8AX09-N/FF/HE

Mouser Part No
703-P8AX09-N/FF/HE

New At Mouser

Citel

Connectorised Surge Protectors

Datasheet

3In Stock

£116.11

£96.27

£90.85

£69.47

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes TVS SURF MT DO214AA - SMBJ33A 3K T&R

SMBJ33A-E
Littelfuse
1: £0.383
2,083In Stock
New Product

Mfr. Part No.
SMBJ33A-E

Mouser Part No
576-SMBJ33AE

New Product

Littelfuse

ESD Protection Diodes / TVS Diodes TVS SURF MT DO214AA - SMBJ33A 3K T&R

Datasheet

2,083In Stock

Cut Tape

£0.383

£0.202

£0.15

£0.114

Reel

£0.06

View

Min.: 1
Mult.: 1

: 3,000

Circuit Breakers PDG2,3P,200A,25KA/480V,FXFXTMTU

PDG23F0200TFFJ
Eaton Electrical
1: £944.47
2In Stock
2Expected 19/10/2026
New Product

Mfr. Part No.
PDG23F0200TFFJ

Mouser Part No
504-PDG23F0200TFFJ

New Product

Eaton Electrical

Circuit Breakers PDG2,3P,200A,25KA/480V,FXFXTMTU

Datasheet

2In Stock

2Expected 19/10/2026

£944.47

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors NTC Mini Ni 0.4 ld 10K 1 % Tp 0.4e/1e A

NTCLE213E3103FHT1A
Vishay / BC Components
1: £1.30
2,664In Stock
New Product

Mfr. Part No.
NTCLE213E3103FHT1A

Mouser Part No
594-NTCLE213E313FHT1

New Product

Vishay / BC Components

NTC (Negative Temperature Coefficient) Thermistors NTC Mini Ni 0.4 ld 10K 1 % Tp 0.4e/1e A

Datasheet

2,664In Stock

£1.30

£0.978

£0.78

£0.737

View

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 5KW, 33V 5%,BIDIR,SMC TVS

SMC5K33CAHM3/I
Vishay
1: £1.37
6,927In Stock
New Product

Mfr. Part No.
SMC5K33CAHM3/I

Mouser Part No
78-SMC5K33CAHM3/I

New Product

Vishay

ESD Protection Diodes / TVS Diodes 5KW, 33V 5%,BIDIR,SMC TVS

Learn More

Datasheet

6,927In Stock

Cut Tape

£1.37

£1.14

£0.899

£0.766

Reel

£0.716

View

Min.: 1
Mult.: 1

: 3,500

Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, Slim Line GDT technology

3406.00.0036
HUBER+SUHNER
1: £193.41
8In Stock
New Product

Mfr. Part No.
3406.00.0036

Mouser Part No
455-3406000036

New Product

HUBER+SUHNER

Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, Slim Line GDT technology

Learn More

Datasheet

8In Stock

£193.41

£175.12

£168.34

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 5KW, 54V 5%,BIDIR,SMC TVS

SMC5K54CAHM3/I
Vishay
1: £2.17
2,240In Stock
New Product

Mfr. Part No.
SMC5K54CAHM3/I

Mouser Part No
78-SMC5K54CAHM3/I

New Product

Vishay

ESD Protection Diodes / TVS Diodes 5KW, 54V 5%,BIDIR,SMC TVS

Learn More

Datasheet

2,240In Stock

Cut Tape

£2.17

£1.41

£1.04

£0.882

Reel

£0.706

View

Min.: 1
Mult.: 1

: 3,500

Power Outlet Strips EA BA PDU 1U, C20 INPUT, 3.33 KW MAX, 11

T9092B-CBSF
Eaton
1: £909.50
18In Stock
42On Order

Mfr. Part No.
T9092B-CBSF

Mouser Part No
545-T9092B-CBSF

Eaton

Power Outlet Strips EA BA PDU 1U, C20 INPUT, 3.33 KW MAX, 11

Datasheet

18In Stock

42On Order

£909.50

£803.91

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 30K +/-1% Glass Bead, B3990, 300C

TT2-30KC5-3
CTS Electronic Components
1: £1.85
497In Stock
New Product

Mfr. Part No.
TT2-30KC5-3

Mouser Part No
774-TT230KC53

New Product

CTS Electronic Components

NTC (Negative Temperature Coefficient) Thermistors 30K +/-1% Glass Bead, B3990, 300C

Learn More

Datasheet

497In Stock

£1.85

£1.60

£1.52

£1.38

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 10k, DO-35 glass NTC, B3977

TTDO-10KC3-8
CTS Electronic Components
1: £0.986
467In Stock
New Product

Mfr. Part No.
TTDO-10KC3-8

Mouser Part No
774-TTDO10KC38

New Product

CTS Electronic Components

NTC (Negative Temperature Coefficient) Thermistors 10k, DO-35 glass NTC, B3977

Learn More

Datasheet

467In Stock

£0.986

£0.849

£0.803

£0.735

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 1K, +/-0.2C: 0C-70C, B3977, uninsulated wire

TTS-1KC3-BG
CTS Electronic Components
1: £1.68
496In Stock
New Product

Mfr. Part No.
TTS-1KC3-BG

Mouser Part No
774-TTS1KC3BG

New Product

CTS Electronic Components

NTC (Negative Temperature Coefficient) Thermistors 1K, +/-0.2C: 0C-70C, B3977, uninsulated wire

Learn More

Datasheet

496In Stock

£1.68

£1.45

£1.38

£1.26

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 2.186K +/-1% Glass Bead, B3390,300C

TT2-2.186KC7L-1
CTS Electronic Components
1: £2.72
500In Stock
New Product

Mfr. Part No.
TT2-2.186KC7L-1

Mouser Part No
774-TT22.186KC7L1

New Product

CTS Electronic Components

NTC (Negative Temperature Coefficient) Thermistors 2.186K +/-1% Glass Bead, B3390,300C

Learn More

Datasheet

500In Stock

£2.72

£2.34

£2.23

£2.12

View

Min.: 1
Mult.: 1

Industrial & Electrical Fuses APO Rated current: 400A, Rated voltage: 1000VDC, Trigger Type: active, Mounting: Bolt-on A, ConType: AK2-1

3-158-119
Schurter
1: £70.14
14In Stock
36Expected 22/01/2027
New Product

Mfr. Part No.
3-158-119

Mouser Part No
693-3-158-119

New Product

Schurter

Industrial & Electrical Fuses APO Rated current: 400A, Rated voltage: 1000VDC, Trigger Type: active, Mounting: Bolt-on A, ConType: AK2-1

Learn More

Datasheet

14In Stock

36Expected 22/01/2027

£70.14

£58.18

£53.66

£44.40

View

Min.: 1
Mult.: 1

Automotive Fuses FUSE - ZCASE MEGA 32V M10 80A 480 PC

3298080.ZXM10
Littelfuse
1: £9.07
337In Stock
New Product

Mfr. Part No.
3298080.ZXM10

Mouser Part No
576-3298080.ZXM10

New Product

Littelfuse

Automotive Fuses FUSE - ZCASE MEGA 32V M10 80A 480 PC

Datasheet

337In Stock

£9.07

£8.76

£7.75

£6.25

View

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SOT323

VCAN33A2-03GHE3A08
Vishay
1: £0.353
19,029In Stock
New Product

Mfr. Part No.
VCAN33A2-03GHE3A08

Mouser Part No
78-VCAN33A2-03HE3A08

New Product

Vishay

ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SOT323

Datasheet

19,029In Stock

Cut Tape

£0.353

£0.24

£0.136

£0.107

Reel

£0.076

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

ESD Protection Diodes / TVS Diodes DIODE ESD UNI-DIRECTIONAL 5VWM 5A SOD-723

CPDE5V0U-HF
Comchip Technology
1: £0.271
5,193In Stock
New Product

Mfr. Part No.
CPDE5V0U-HF

Mouser Part No
750-CPDE5V0U-HF

New Product

Comchip Technology

ESD Protection Diodes / TVS Diodes DIODE ESD UNI-DIRECTIONAL 5VWM 5A SOD-723

Learn More

Datasheet

5,193In Stock

Cut Tape

£0.271

£0.19

£0.12

£0.074

Reel

£0.037

View

Min.: 1
Mult.: 1

: 8,000

NTC (Negative Temperature Coefficient) Thermistors 30K, +/-0.2C: 0C-70C, B3942, uninsulated wire

TTS-30KC5-BG
CTS Electronic Components
1: £1.68
249In Stock
251Expected 12/11/2026
New Product

Mfr. Part No.
TTS-30KC5-BG

Mouser Part No
774-TTS30KC5BG

New Product

CTS Electronic Components

NTC (Negative Temperature Coefficient) Thermistors 30K, +/-0.2C: 0C-70C, B3942, uninsulated wire

Learn More

Datasheet

249In Stock

251Expected 12/11/2026

£1.68

£1.45

£1.38

£1.26

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 50K, +/-0.2C: 0C-70C, B4260, Teflon insulated wire

TTS-50KC6-BZ
CTS Electronic Components
1: £1.81
250In Stock
New Product

Mfr. Part No.
TTS-50KC6-BZ

Mouser Part No
774-TTS50KC6BZ

New Product

CTS Electronic Components

NTC (Negative Temperature Coefficient) Thermistors 50K, +/-0.2C: 0C-70C, B4260, Teflon insulated wire

Learn More

Datasheet

250In Stock

£1.81

£1.56

£1.48

£1.34

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 20K, +/-0.2C: 0C-70C, B4260, Teflon insulated wire

TTS-20KC6-BZ
CTS Electronic Components
1: £1.81
386In Stock
114Expected 12/11/2026
New Product

Mfr. Part No.
TTS-20KC6-BZ

Mouser Part No
774-TTS20KC6BZ

New Product

CTS Electronic Components

NTC (Negative Temperature Coefficient) Thermistors 20K, +/-0.2C: 0C-70C, B4260, Teflon insulated wire

Learn More

Datasheet

386In Stock

114Expected 12/11/2026

£1.81

£1.56

£1.48

£1.34

View

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes AUTO TVS DIODE, SMAJE FAMILY, 33Vdc, Uni

SMAJE33AH
Eaton Electronics
1: £0.323
2,984In Stock
New Product

Mfr. Part No.
SMAJE33AH

Mouser Part No
504-MAJE33AH

New Product

Eaton Electronics

ESD Protection Diodes / TVS Diodes AUTO TVS DIODE, SMAJE FAMILY, 33Vdc, Uni

Learn More

Datasheet

2,984In Stock

Cut Tape

£0.323

£0.208

£0.123

£0.093

Reel

£0.063

View

Min.: 1
Mult.: 1

: 5,000

Circuit Breakers C Series 120A DC Hydraulic/Magnetic Circuit Breaker, UL489A, Black Handle

CA1-P0-D6-812-321-MT
Carling Technologies
1: £49.36
8In Stock
New Product

Mfr. Part No.
CA1-P0-D6-812-321-MT

Mouser Part No
691-CA1-P0D6812321MT

New Product

Carling Technologies

Circuit Breakers C Series 120A DC Hydraulic/Magnetic Circuit Breaker, UL489A, Black Handle

Datasheet

8In Stock

£49.36

£40.94

£37.77

£31.26

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors 1K, +/-0.2C: 0C-70C, B3977,Teflon insulated wire

TTS-1KC3-BZ
CTS Electronic Components
1: £1.81
500In Stock
New Product

Mfr. Part No.
TTS-1KC3-BZ

Mouser Part No
774-TTS1KC3BZ

New Product

CTS Electronic Components

NTC (Negative Temperature Coefficient) Thermistors 1K, +/-0.2C: 0C-70C, B3977,Teflon insulated wire

Learn More

Datasheet

500In Stock

£1.81

£1.56

£1.48

£1.34

View

Min.: 1
Mult.: 1

Circuit Breaker Accessories LATCH CHECK SWITCH

699B147G01
Eaton Electrical
1: £920.70
5In Stock
New Product

Mfr. Part No.
699B147G01

Mouser Part No
504-699B147G01

New Product

Eaton Electrical

Circuit Breaker Accessories LATCH CHECK SWITCH

Datasheet

5In Stock

£920.70

Min.: 1
Mult.: 1

Circuit Protection

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