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: 359,646
Select Image Part # Mfr. Description Datasheet Availability Pricing (SGD) Filter the results in the table by unit price based on your quantity. Qty. RoHS
Murata Electronics NTC (Negative Temperature Coefficient) Thermistors 9,383In Stock
Min.: 1
Mult.: 1
: 20,000
Transtector Industrial Surge Protectors AC Surge Protector SPD MCP Panel 120/208 Vac 3-Phase Wye SASD, MOV 100 kA 1In Stock
Min.: 1
Mult.: 1
Transtector Connectorised Surge Protectors Data Surge Protector SPD DPR Indoor Gigabit Ethernet PoE Shielded RJ45 GDT CE Compliant, EN/IEC 60950-1, CE, RoHS, UL 497B 40In Stock
Min.: 1
Mult.: 1


E-T-A Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot 40In Stock
50Expected 17/8/2026
Min.: 1
Mult.: 1
Eaton Electrical Circuit Breaker Accessories FAZ-NA 80A 3-P BUS BAR FOR 2 bkr 28In Stock
30Expected 18/8/2026
Min.: 1
Mult.: 1
TDK NTC (Negative Temperature Coefficient) Thermistors K 164/470 K/J52 5% NTC Thermistor 5,847In Stock
Min.: 1
Mult.: 1
: 1,500

TDK NTC (Negative Temperature Coefficient) Thermistors 0805 4.7K 3% B 3650 55/125/56 9,287In Stock
Min.: 1
Mult.: 1
: 4,000

TDK Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 2 ELECT / 3000v 500In Stock
3,000On Order
Min.: 1
Mult.: 1
: 100

TDK Gas Discharge Tubes - GDTs / Gas Plasma Arrestors T23-A250XF4 1,067In Stock
Min.: 1
Mult.: 1

AIRPAX Circuit Breakers Cir Brkr,HydMag 29In Stock
Min.: 1
Mult.: 1
ABB Circuit Breaker Accessories KIT FCCUXT2 14-1/0AWG125A 3PCUL/CSA 49In Stock
40Expected 1/10/2026
Min.: 1
Mult.: 1
Siemens Circuit Breakers BRKR 3VA52 3P 250A 35KA FTFM 1In Stock
Min.: 1
Mult.: 1
Square D Industrial Surge Protectors SPD T1 EMA 100KA 480V 3P3W 1In Stock
Min.: 1
Mult.: 1



Littelfuse Fuse Holder Accessories M10 Insulated Stud 83In Stock
Min.: 1
Mult.: 1

KYOCERA AVX Surface Mount Fuses .075A 2.0mohm Brown Thin Film Fuses 0201 4,320In Stock
Min.: 1
Mult.: 1
: 500

Vishay NTC (Negative Temperature Coefficient) Thermistors NTCFLEX0510k2%3435K25mm 268In Stock
Min.: 1
Mult.: 1

Vishay Semiconductors ESD Protection Diodes / TVS Diodes 600W,27V 5%,UNIDIR,SMB TVS 7,408In Stock
Min.: 1
Mult.: 1
: 750

Vishay Semiconductors ESD Protection Diodes / TVS Diodes 1KW,12V 5%,UNIDIR,SMB TVS 2,393In Stock
Min.: 1
Mult.: 1
: 750

Vishay Semiconductors ESD Protection Diodes / TVS Diodes 600W,28V 5%,UNIDIR,SMB TVS 7,470In Stock
Min.: 1
Mult.: 1
: 750

Vishay Semiconductors ESD Protection Diodes / TVS Diodes 600W,36V 5%,BIDIR,SMB TVS 3,886In Stock
Min.: 1
Mult.: 1
: 3,200

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
Transtector Industrial Surge Protectors AC Surge Protector SPD APEX IMAX Panel 120/240 Vac Split-Phase MOV 160 kA, UL 1449 5th Ed. Type 2 2In Stock
Min.: 1
Mult.: 1


E-T-A Circuit Breaker Accessories 1,707In Stock
Min.: 1
Mult.: 1