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: 362,009
Select Image Part # Mfr. Description Datasheet Availability Pricing (SGD) Filter the results in the table by unit price based on your quantity. Qty. RoHS
Vishay ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SOT323 8,759In Stock
Min.: 1
Mult.: 1
: 3,000

Murata Electronics NTC (Negative Temperature Coefficient) Thermistors 6,780In Stock
Min.: 1
Mult.: 1
Murata Electronics NTC (Negative Temperature Coefficient) Thermistors 5,783In Stock
Min.: 1
Mult.: 1
Murata Electronics NTC (Negative Temperature Coefficient) Thermistors 9,990In Stock
Min.: 1
Mult.: 1
Murata Electronics NTC (Negative Temperature Coefficient) Thermistors 9,900In Stock
Min.: 1
Mult.: 1
Bourns ESD Protection Diodes / TVS Diodes 1KA high current bidirectional TVS diodes 10,358In Stock
Min.: 1
Mult.: 1
: 2,500

Bourns ESD Protection Diodes / TVS Diodes 1KA high current bidirectional TVS diodes 8,609In Stock
Min.: 1
Mult.: 1
: 2,500

Pasternack Connectorised Surge Protectors 4.3-10 F/F BULKHEAD COAXIAL RF SURGE PROTECTOR 698 1In Stock
Min.: 1
Mult.: 1
Eaton Electrical Circuit Breakers CH 30MA GFI 60A/2 POLE 120/240V 10K 1In Stock
Min.: 1
Mult.: 1
Vishay Semiconductors ESD Protection Diodes / TVS Diodes 300W,550V MIN,UNIDIR,SMA TVS 5,389In Stock
Min.: 1
Mult.: 1
: 1,800

Vishay ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SOT323 4,717In Stock
Min.: 1
Mult.: 1
: 3,000

Murata Electronics NTC (Negative Temperature Coefficient) Thermistors 10,013In Stock
Min.: 1
Mult.: 1
: 20,000
Eaton Electrical Circuit Breakers BR 30A/2 Pole Com. Trip 120/240V 22K 3In Stock
Min.: 1
Mult.: 1
Eaton Electrical Circuit Breakers PDG2,3P,20A,25KA/480V,FXFXTMTU 2In Stock
Min.: 1
Mult.: 1
Eaton Electrical Circuit Breakers PDG2, 50A, MCP, STD CALIBRATION-HMCPS 1In Stock
Min.: 1
Mult.: 1
Vishay / BC Components NTC (Negative Temperature Coefficient) Thermistors NTC Mini Ni 0.4 ld 10K 1% blk 0.4e/1e A 450In Stock
Min.: 1
Mult.: 1

Vishay ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SOT323 14,835In Stock
Min.: 1
Mult.: 1
: 3,000

Vishay ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SOD323 11,830In Stock
Min.: 1
Mult.: 1
: 3,000

Eaton Electrical Circuit Breakers FDB 3P 20A TRIP, 600V CLASS, LINE & LOAD 1In Stock
Min.: 1
Mult.: 1
Vishay / BC Components NTC (Negative Temperature Coefficient) Thermistors NTC Mini Ni 0.4 ld 10K 1 % Tp 0.4e/1e A 1,272In Stock
1,500Expected 30/7/2026
Min.: 1
Mult.: 1



Bourns Fuse Holder CFB1 FUSE BLOCK 150A FUSE 27In Stock
Min.: 1
Mult.: 1

Murata Electronics NTC (Negative Temperature Coefficient) Thermistors 9,495In Stock
Min.: 1
Mult.: 1
Murata Electronics NTC (Negative Temperature Coefficient) Thermistors 9,990In Stock
Min.: 1
Mult.: 1
Murata Electronics NTC (Negative Temperature Coefficient) Thermistors 9,520In Stock
Min.: 1
Mult.: 1
Bourns Thermal Cut-offs TCO, High Current, SMD, 90C, Self Hold AEC-Q200 15,370In Stock
Min.: 1
Mult.: 1
: 4,000