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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: 362,172

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Part #

Thermal Cutoffs THERMAL PROTECTOR

RP-12A
AIRPAX
1: $22.46
1,171In Stock

Mfr. Part #
RP-12A

Mouser Part #
874-RP-12A

AIRPAX

Thermal Cutoffs THERMAL PROTECTOR

Datasheet

1,171In Stock

$22.46

Min.: 1
Mult.: 1

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

CPDE5V0-HF
Comchip Technology
1: $0.518
4,356In 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

4,356In Stock

Cut Tape

$0.518

$0.366

$0.232

$0.143

Reel

$0.071

View

Min.: 1
Mult.: 1

: 8,000

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

CPDE5V0U-HF
Comchip Technology
1: $0.518
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

Learn More

Datasheet

5,193In Stock

Cut Tape

$0.518

$0.366

$0.232

$0.143

Reel

$0.071

View

Min.: 1
Mult.: 1

: 8,000

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

SMAJE33AH
Eaton Electronics
1: $0.619
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

Learn More

Datasheet

2,611In Stock

Cut Tape

$0.619

$0.399

$0.236

$0.179

Reel

$0.121

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: $94.67
9In 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

9In Stock

$94.67

$78.54

$72.45

$59.96

View

Min.: 1
Mult.: 1

Circuit Breaker Accessories PDG3, 3P, 600A, 65KA/480V, FRAME ONLY

PDG33M0600FNNN
Eaton Electrical
1: $4,599.53
1In Stock
New Product

Mfr. Part #
PDG33M0600FNNN

Mouser Part #
504-PDG33M0600FNNN

New Product

Eaton Electrical

Circuit Breaker Accessories PDG3, 3P, 600A, 65KA/480V, FRAME ONLY

Datasheet

1In Stock

$4,599.53

Min.: 1
Mult.: 1

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

JT3250FA
Eaton Electrical
1: $2,596.49
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

$2,596.49

Min.: 1
Mult.: 1

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

LT340032
Eaton Electrical
1: $5,594.07
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

$5,594.07

Min.: 1
Mult.: 1

Circuit Breakers FDB 3P 20A TRIP, 600V CLASS, LINE & LOAD

FDB3020L
Eaton Electrical
1: $1,846.56
1In Stock
New Product

Mfr. Part #
FDB3020L

Mouser Part #
504-FDB3020L

New Product

Eaton Electrical

Circuit Breakers FDB 3P 20A TRIP, 600V CLASS, LINE & LOAD

Datasheet

1In Stock

$1,846.56

Min.: 1
Mult.: 1

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

NTCLE213E3103FHT1A
Vishay / BC Components
1: $2.49
1,228In Stock
1,500Expected 2026-08-17
New Product

Mfr. Part #
NTCLE213E3103FHT1A

Mouser Part #
594-NTCLE213E313FHT1

New Product

Vishay / BC Components

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

Datasheet

1,228In Stock

1,500Expected 2026-08-17

$2.49

$1.87

$1.50

$1.41

View

Min.: 1
Mult.: 1

Fuse Holder CFB1 FUSE BLOCK 150A FUSE

CFB1-150
Bourns
1: $103.55
27In Stock
New Product

Mfr. Part #
CFB1-150

Mouser Part #
652-CFB1-150

New Product

Bourns

Fuse Holder CFB1 FUSE BLOCK 150A FUSE

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Datasheet

27In Stock

$103.55

$87.55

$82.54

$64.07

$63.53

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE DFN1006-2A

VESD29D1-HD1HG3-08
Vishay
1: $0.734
9,750In Stock
New Product

Mfr. Part #
VESD29D1-HD1HG3-08

Mouser Part #
78-VESD29D1-HD1H3-08

New Product

Vishay

ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE DFN1006-2A

9,750In Stock

Cut Tape

$0.734

$0.52

$0.253

$0.212

Reel

$0.098

View

Min.: 1
Mult.: 1

: 10,000

NTC Thermistors

NCU15XW153E60RC
Murata Electronics
1: $0.187
9,495In Stock
New Product

Mfr. Part #
NCU15XW153E60RC

Mouser Part #
81-NCU15XW153E60RC

New Product

Murata Electronics

NTC Thermistors

Learn More

Datasheet

9,495In Stock

$0.187

$0.161

$0.143

$0.117

View

Min.: 1
Mult.: 1

NTC Thermistors

NCU15XW222J60RC
Murata Electronics
1: $0.187
9,990In Stock
New Product

Mfr. Part #
NCU15XW222J60RC

Mouser Part #
81-NCU15XW222J60RC

New Product

Murata Electronics

NTC Thermistors

Learn More

Datasheet

9,990In Stock

$0.187

$0.161

$0.143

$0.117

View

Min.: 1
Mult.: 1

NTC Thermistors

NCU15XW223J6SRC
Murata Electronics
1: $0.158
9,520In Stock
New Product

Mfr. Part #
NCU15XW223J6SRC

Mouser Part #
81-NCU15XW223J6SRC

New Product

Murata Electronics

NTC Thermistors

Learn More

Datasheet

9,520In Stock

$0.158

$0.124

$0.109

$0.094

View

Min.: 1
Mult.: 1

Circuit Breakers BAB3100H BKR A

BAB3100H
Eaton Electrical
1: $1,396.66
1In Stock
New Product

Mfr. Part #
BAB3100H

Mouser Part #
504-BAB3100H

New Product

Eaton Electrical

Circuit Breakers BAB3100H BKR A

Datasheet

1In Stock

$1,396.66

$1,063.70

$1,035.99

View

Min.: 1
Mult.: 1

Circuit Breakers Type BR Breaker 10A/2 Pole 120/240V 10K

BR210
Eaton Electrical
1: $233.35
5In Stock
New Product

Mfr. Part #
BR210

Mouser Part #
504-BR210

New Product

Eaton Electrical

Circuit Breakers Type BR Breaker 10A/2 Pole 120/240V 10K

Datasheet

5In Stock

$233.35

$193.49

$180.30

$148.49

$137.88

Min.: 1
Mult.: 1

Circuit Breakers CL 30A/1Pole 120/240V 10K

CL130
Eaton Electrical
1: $116.11
5In Stock
New Product

Mfr. Part #
CL130

Mouser Part #
504-CL130

New Product

Eaton Electrical

Circuit Breakers CL 30A/1Pole 120/240V 10K

Datasheet

5In Stock

$116.11

$96.31

$89.57

$74.65

View

Min.: 1
Mult.: 1

Circuit Breakers CL bkr 40A/1Pole 120/240V 10K

CL140
Eaton Electrical
1: $116.11
5In Stock
New Product

Mfr. Part #
CL140

Mouser Part #
504-CL140

New Product

Eaton Electrical

Circuit Breakers CL bkr 40A/1Pole 120/240V 10K

Datasheet

5In Stock

$116.11

$96.31

$79.00

$74.02

View

Min.: 1
Mult.: 1

Circuit Breakers PDG1,3P,45A,65KA/480V,50C FXFXTMTU

PDG13M0045VFFJ
Eaton Electrical
1: $1,097.61
1In Stock
New Product

Mfr. Part #
PDG13M0045VFFJ

Mouser Part #
504-PDG13M0045VFFJ

New Product

Eaton Electrical

Circuit Breakers PDG1,3P,45A,65KA/480V,50C FXFXTMTU

Datasheet

1In Stock

$1,097.61

Min.: 1
Mult.: 1

Circuit Breakers PDG2,2P,125A,65KA/480V,FXFXTMTU

PDG22M0125TFFL
Eaton Electrical
1: $1,523.89
1In Stock
New Product

Mfr. Part #
PDG22M0125TFFL

Mouser Part #
504-PDG22M0125TFFL

New Product

Eaton Electrical

Circuit Breakers PDG2,2P,125A,65KA/480V,FXFXTMTU

Datasheet

1In Stock

$1,523.89

Min.: 1
Mult.: 1

Circuit Breakers PDG2,3P,60A,65KA/480V,FXFXTMTU

PDG23M0060TFFL
Eaton Electrical
1: $1,269.30
1In Stock
New Product

Mfr. Part #
PDG23M0060TFFL

Mouser Part #
504-PDG23M0060TFFL

New Product

Eaton Electrical

Circuit Breakers PDG2,3P,60A,65KA/480V,FXFXTMTU

Datasheet

1In Stock

$1,269.30

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 400W,15V 5%,UNIDIR,SMA TVS

SMAJ15AHM3_A/H
Vishay Semiconductors
1: $0.922
1,757In Stock
New Product

Mfr. Part #
SMAJ15AHM3_A/H

Mouser Part #
78-SMAJ15AHM3_A/H

New Product

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 400W,15V 5%,UNIDIR,SMA TVS

Datasheet

1,757In Stock

Cut Tape

$0.922

$0.567

$0.363

$0.311

Reel

$0.209

View

Min.: 1
Mult.: 1

: 1,800

ESD Protection Diodes / TVS Diodes 1.5KW,18V 5%,UNIDIR,SMC TVS

SMCJ18AHM3_A/H
Vishay Semiconductors
1: $1.83
3,282In Stock
New Product

Mfr. Part #
SMCJ18AHM3_A/H

Mouser Part #
78-SMCJ18AHM3_A/H

New Product

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 1.5KW,18V 5%,UNIDIR,SMC TVS

Datasheet

3,282In Stock

Cut Tape

$1.83

$1.15

$0.756

$0.589

Reel

$0.53

View

Min.: 1
Mult.: 1

: 850

NTC Thermistors

NCU15XW152E60RC
Murata Electronics
1: $0.187
9,800In Stock
New Product

Mfr. Part #
NCU15XW152E60RC

Mouser Part #
81-NCU15XW152E60RC

New Product

Murata Electronics

NTC Thermistors

Learn More

Datasheet

9,800In Stock

$0.187

$0.161

$0.143

$0.117

View

Min.: 1
Mult.: 1

Circuit Protection

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