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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: 359,447

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Part #

NTC Thermistors 30K +/-1% Glass Bead, B3990, 300C

TT2-30KC5-3
CTS Electronic Components
1: $2.47
500In Stock
New Product

Mfr. Part #
TT2-30KC5-3

Mouser Part #
774-TT230KC53

New Product

CTS Electronic Components

NTC Thermistors 30K +/-1% Glass Bead, B3990, 300C

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Datasheet

500In Stock

$2.47

$2.13

$2.02

$1.84

View

Min.: 1
Mult.: 1

NTC Thermistors 2.186K +/-1% Glass Bead, B3390,300C

TT2-2.186KC7L-1
CTS Electronic Components
1: $3.62
500In Stock
New Product

Mfr. Part #
TT2-2.186KC7L-1

Mouser Part #
774-TT22.186KC7L1

New Product

CTS Electronic Components

NTC Thermistors 2.186K +/-1% Glass Bead, B3390,300C

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Datasheet

500In Stock

$3.62

$3.12

$2.96

$2.82

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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: $93.42
14In Stock
New Product

Mfr. Part #
3-158-119

Mouser Part #
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

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Datasheet

14In Stock

$93.42

$77.49

$71.48

$59.14

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Min.: 1
Mult.: 1

NTC Thermistors 10k, DO-35 glass NTC, B3977

TTDO-10KC3-8
CTS Electronic Components
1: $1.31
497In Stock
New Product

Mfr. Part #
TTDO-10KC3-8

Mouser Part #
774-TTDO10KC38

New Product

CTS Electronic Components

NTC Thermistors 10k, DO-35 glass NTC, B3977

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Datasheet

497In Stock

$1.31

$1.13

$1.07

$0.979

View

Min.: 1
Mult.: 1

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

3298080.ZXM10
Littelfuse
1: $12.08
339In Stock
New Product

Mfr. Part #
3298080.ZXM10

Mouser Part #
576-3298080.ZXM10

New Product

Littelfuse

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

Datasheet

339In Stock

$12.08

$11.66

$10.33

$8.33

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Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SOT23

VGSOT24C-HG3-08
Vishay Semiconductors
1: $0.55
29,539In Stock
New Product

Mfr. Part #
VGSOT24C-HG3-08

Mouser Part #
78-VGSOT24C-HG3-08

New Product

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SOT23

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Datasheet

29,539In Stock

Cut Tape

$0.55

$0.286

$0.213

$0.161

Reel

$0.122

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

NTC Thermistors 30K, +/-0.2C: 0C-70C, B3942, uninsulated wire

TTS-30KC5-BG
CTS Electronic Components
1: $2.24
249In Stock
251Expected 11/12/2026
New Product

Mfr. Part #
TTS-30KC5-BG

Mouser Part #
774-TTS30KC5BG

New Product

CTS Electronic Components

NTC Thermistors 30K, +/-0.2C: 0C-70C, B3942, uninsulated wire

Learn More

Datasheet

249In Stock

251Expected 11/12/2026

$2.24

$1.93

$1.84

$1.67

View

Min.: 1
Mult.: 1

NTC Thermistors 20K, +/-0.2C: 0C-70C, B4260, Teflon insulated wire

TTS-20KC6-BZ
CTS Electronic Components
1: $2.41
386In Stock
114Expected 11/12/2026
New Product

Mfr. Part #
TTS-20KC6-BZ

Mouser Part #
774-TTS20KC6BZ

New Product

CTS Electronic Components

NTC Thermistors 20K, +/-0.2C: 0C-70C, B4260, Teflon insulated wire

Learn More

Datasheet

386In Stock

114Expected 11/12/2026

$2.41

$2.08

$1.97

$1.79

View

Min.: 1
Mult.: 1

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

CPDE5V0U-HF
Comchip Technology
1: $0.36
5,193In Stock
New Product

Mfr. Part #
CPDE5V0U-HF

Mouser Part #
750-CPDE5V0U-HF

New Product

Comchip Technology

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

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Datasheet

5,193In Stock

Cut Tape

$0.36

$0.254

$0.161

$0.099

Reel

$0.049

View

Min.: 1
Mult.: 1

: 8,000

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

SMAJE33AH
Eaton Electronics
1: $0.43
2,611In Stock
New Product

Mfr. Part #
SMAJE33AH

Mouser Part #
504-MAJE33AH

New Product

Eaton Electronics

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

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Datasheet

2,611In Stock

Cut Tape

$0.43

$0.277

$0.164

$0.124

Reel

$0.084

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: $65.74
8In Stock
New Product

Mfr. Part #
CA1-P0-D6-812-321-MT

Mouser Part #
691-CA1-P0D6812321MT

New Product

Carling Technologies

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

Datasheet

8In Stock

$65.74

$54.54

$50.31

$41.64

View

Min.: 1
Mult.: 1

Circuit Breaker Accessories 250A 3P Thermal Mag Fixed/Adj Trip Unit

JT3250FA
Eaton Electrical
1: $1,803.12
1In Stock
New Product

Mfr. Part #
JT3250FA

Mouser Part #
504-JT3250FA

New Product

Eaton Electrical

Circuit Breaker Accessories 250A 3P Thermal Mag Fixed/Adj Trip Unit

1In Stock

$1,803.12

Min.: 1
Mult.: 1

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

CPDE5V0-HF
Comchip Technology
1: $0.36
4,352In Stock
New Product

Mfr. Part #
CPDE5V0-HF

Mouser Part #
750-CPDE5V0-HF

New Product

Comchip Technology

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

Learn More

Datasheet

4,352In Stock

Cut Tape

$0.36

$0.254

$0.161

$0.099

Reel

$0.049

View

Min.: 1
Mult.: 1

: 8,000

NTC Thermistors 3K, +/-0.2C: 0C-70C, B3977, uninsulated wire

TTS-3KC3-BG
CTS Electronic Components
1: $2.24
500In Stock
New Product

Mfr. Part #
TTS-3KC3-BG

Mouser Part #
774-TTS3KC3BG

New Product

CTS Electronic Components

NTC Thermistors 3K, +/-0.2C: 0C-70C, B3977, uninsulated wire

Learn More

Datasheet

500In Stock

$2.24

$1.93

$1.84

$1.67

View

Min.: 1
Mult.: 1

NTC Thermistors 50K, +/-0.2C: 0C-70C, B4260, Teflon insulated wire

TTS-50KC6-BZ
CTS Electronic Components
1: $2.41
250In Stock
New Product

Mfr. Part #
TTS-50KC6-BZ

Mouser Part #
774-TTS50KC6BZ

New Product

CTS Electronic Components

NTC Thermistors 50K, +/-0.2C: 0C-70C, B4260, Teflon insulated wire

Learn More

Datasheet

250In Stock

$2.41

$2.08

$1.97

$1.79

View

Min.: 1
Mult.: 1

Thermal Cutoffs TCO, High Current, SMD, 90C, Self Hold AEC-Q200

SD90ABB
Bourns
1: $2.35
15,224In Stock

Mfr. Part #
SD90ABB

Mouser Part #
652-SD90ABB

Bourns

Thermal Cutoffs TCO, High Current, SMD, 90C, Self Hold AEC-Q200

Learn More

Datasheet

15,224In Stock

Cut Tape

$2.35

$2.17

$1.80

$1.60

View

Reel

$1.02

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

Circuit Breaker Accessories LG 3 Pole 400A LSI Electronic Trip Unit

LT340032
Eaton Electrical
1: $3,884.77
1In Stock
New Product

Mfr. Part #
LT340032

Mouser Part #
504-LT340032

New Product

Eaton Electrical

Circuit Breaker Accessories LG 3 Pole 400A LSI Electronic Trip Unit

1In Stock

$3,884.77

Min.: 1
Mult.: 1

Circuit Breakers BR 30A/2 Pole Com. Trip 120/240V 22K

BRH230
Eaton Electrical
1: $448.93
3In Stock
New Product

Mfr. Part #
BRH230

Mouser Part #
504-BRH230

New Product

Eaton Electrical

Circuit Breakers BR 30A/2 Pole Com. Trip 120/240V 22K

Datasheet

3In Stock

$448.93

$330.56

$310.14

View

Min.: 1
Mult.: 1

Circuit Breakers PDG2,3P,20A,25KA/480V,FXFXTMTU

PDG23F0020TFFJ
Eaton Electrical
1: $738.62
2In Stock
New Product

Mfr. Part #
PDG23F0020TFFJ

Mouser Part #
504-PDG23F0020TFFJ

New Product

Eaton Electrical

Circuit Breakers PDG2,3P,20A,25KA/480V,FXFXTMTU

Datasheet

2In Stock

$738.62

$611.87

$563.91

Min.: 1
Mult.: 1

Circuit Breakers PDG2, 50A, MCP, STD CALIBRATION-HMCPS

PDG23M0050MSAN
Eaton Electrical
1: $824.74
1In Stock
New Product

Mfr. Part #
PDG23M0050MSAN

Mouser Part #
504-PDG23M0050MSAN

New Product

Eaton Electrical

Circuit Breakers PDG2, 50A, MCP, STD CALIBRATION-HMCPS

Datasheet

1In Stock

$824.74

$683.21

$629.65

Min.: 1
Mult.: 1

NTC Thermistors NTC Mini Ni 0.4 ld 10K 1% blk 0.4e/1e A

NTCLE213E3103FHB0A
Vishay / BC Components
1: $1.92
402In Stock
1,500Expected 9/1/2026
New Product

Mfr. Part #
NTCLE213E3103FHB0A

Mouser Part #
594-NTCLE213E313FHB

New Product

Vishay / BC Components

NTC Thermistors NTC Mini Ni 0.4 ld 10K 1% blk 0.4e/1e A

Datasheet

402In Stock

1,500Expected 9/1/2026

$1.92

$1.44

$1.15

$1.08

View

Min.: 1
Mult.: 1

Circuit Breakers Type CH Breaker 40A/3 Pole 240V 10K

CH340
Eaton Electrical
1: $619.70
3In Stock
New Product

Mfr. Part #
CH340

Mouser Part #
504-CH340

New Product

Eaton Electrical

Circuit Breakers Type CH Breaker 40A/3 Pole 240V 10K

Datasheet

3In Stock

$619.70

$499.85

$467.39

View

Min.: 1
Mult.: 1

Circuit Breakers CH GFCI BREAKER, 30A, PIGTAIL, 10KAIC

CHFN130GF
Eaton Electrical
1: $482.54
1In Stock
New Product

Mfr. Part #
CHFN130GF

Mouser Part #
504-CHFN130GF

New Product

Eaton Electrical

Circuit Breakers CH GFCI BREAKER, 30A, PIGTAIL, 10KAIC

1In Stock

$482.54

$423.51

$385.13

View

Min.: 1
Mult.: 1

Circuit Breakers FAZ UL 1077 2P 2.5A D CURVE

FAZ-D2.5/2
Eaton Electrical
1: $431.89
1In Stock
New Product

Mfr. Part #
FAZ-D2.5/2

Mouser Part #
504-FAZ-D2.5/2

New Product

Eaton Electrical

Circuit Breakers FAZ UL 1077 2P 2.5A D CURVE

Datasheet

1In Stock

$431.89

$357.78

$329.73

Min.: 1
Mult.: 1

Circuit Breakers HFD-DC BREAKER - LINE & LOAD TERMINALS

HFDDC1060L
Eaton Electrical
1: $582.69
1In Stock
New Product

Mfr. Part #
HFDDC1060L

Mouser Part #
504-HFDDC1060L

New Product

Eaton Electrical

Circuit Breakers HFD-DC BREAKER - LINE & LOAD TERMINALS

Datasheet

1In Stock

$582.69

$570.87

$562.64

View

Min.: 1
Mult.: 1

Circuit Protection

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