Circuit Protection

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.
Results: 359,614
Select Image Part # Mfr. Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity. Qty. RoHS


E-T-A Circuit Breakers 508,DM,24VDC,CL,2-4-6,ATX 13In Stock
Min.: 1
Mult.: 1



E-T-A Circuit Breakers 508,DM,24VDC,CL,2CH,1-3.6,CL2,ATX 9In Stock
Min.: 1
Mult.: 1

TE Connectivity NTC Thermistors ESAPP-ESA PROBE-RTD PT1000, 500mm 1In Stock
Min.: 1
Mult.: 1

Littelfuse Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 315A 2In Stock
1Expected 9/17/2026
Min.: 1
Mult.: 1

Littelfuse Triacs 0.8A 600V Sens SOT-89 700In Stock
200On Order
Min.: 1
Mult.: 1
: 1,000

Shibaura Electronics NTC Thermistors Assembly Probe CE2 Type R37=29.37kOhms 2.5% Temp. Range -20 to 90 100In Stock
Min.: 1
Mult.: 1

Phoenix Contact Industrial Surge Protectors SFP2-1S-1-20A-230AC-UT 2In Stock
24On Order
Min.: 1
Mult.: 1

Bourns Industrial & Electrical Fuses POWrFuse BD 1000Vdc 550A 4In Stock
Min.: 1
Mult.: 1

Littelfuse Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL DIN 315A 3In Stock
Min.: 1
Mult.: 1

Littelfuse Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 500A 3In Stock
Min.: 1
Mult.: 1

Littelfuse ESD Protection Diodes / TVS Diodes 4V, 0.55pF, 20A, SOD882 5,747In Stock
Min.: 1
Mult.: 1
: 10,000

Littelfuse ESD Protection Diodes / TVS Diodes "20 V, 50pF, 5A," 7,629In Stock
Min.: 1
Mult.: 1
: 10,000

Littelfuse ESD Protection Diodes / TVS Diodes 4V, 0.45pF, 20A, Flipchip 7,606In Stock
Min.: 1
Mult.: 1
: 10,000

TE Connectivity NTC Thermistors Glass Encapsulated NTC Thermistor, Probe, Surface Mount 15K4 1In Stock
Min.: 1
Mult.: 1

Shibaura Electronics NTC Thermistors Assembly Probe KT1 Type R25=10kOhms 5% Temp. Range -30 to 80 100In Stock
Min.: 1
Mult.: 1

Shibaura Electronics NTC Thermistors Assembly Probe KTM1 Type R25=10kOhms 2% Temp. Range -30 to 100 88In Stock
Min.: 1
Mult.: 1

Shibaura Electronics NTC Thermistors Assembly Probe CE1 Type R25=10kOhms 3% Temp. Range -30 to 80 100In Stock
Min.: 1
Mult.: 1

Bourns ESD Protection Diodes / TVS Diodes SOD323 03V 400W BIDIR 1,938In Stock
Min.: 1
Mult.: 1
: 3,000

Bourns ESD Protection Diodes / TVS Diodes SOD323 36V 400W BIDIR 2,092In Stock
Min.: 1
Mult.: 1
: 3,000

Littelfuse Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 450A 3In Stock
Min.: 1
Mult.: 1

Littelfuse ESD Protection Diodes / TVS Diodes 30V, 100A ,DNF2020-6L 3,100In Stock
Min.: 1
Mult.: 1
: 3,000

Littelfuse SCRs 8A 800V Std TO-251 V-PAK 750In Stock
Min.: 1
Mult.: 1

Shibaura Electronics NTC Thermistors Assembly Probe MP1 Type R(100) =3.3kOhms +/-5% Temp. Range -30 to 200 99In Stock
Min.: 1
Mult.: 1

Shibaura Electronics NTC Thermistors Assembly Probe OCK1 Type R200=1.0kOhms 5% Temp. Range -20 to 300 100In Stock
Min.: 1
Mult.: 1

Shibaura Electronics NTC Thermistors Assembly Probe KN2 Type R100=3.3kOhms 2.5% Temp. Range -20 to 300 99In Stock
Min.: 1
Mult.: 1