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: 359.634
Select Image Part # Mfr. Description Datasheet Availability Pricing (IDR) Filter the results in the table by unit price based on your quantity. Qty. RoHS
ABB Circuit Breakers XT4H 250 TMF 250-2500 3P F F UL/CSA 2In Stock
Min.: 1
Mult.: 1
Siemens Circuit Breaker Accessories BREAKER MC FLANGE MAX-FLEX HDL 2In Stock
Min.: 1
Mult.: 1
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


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
50On Order
Min.: 1
Mult.: 1
Eaton Electrical Circuit Breaker Accessories FAZ-NA 80A 3-P BUS BAR FOR 2 bkr 28In Stock
30On Order
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 9.262In Stock
Min.: 1
Mult.: 1
: 4.000

TDK Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 2 ELECT / 3000v 440In 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

ABB Circuit Breaker Accessories KIT FCCUXT2 14-1/0AWG125A 3PCUL/CSA
40Expected 01/10/2026
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

Transtector Industrial Surge Protectors AC Surge Protector SPD MCP Panel 120/240 Vac Split-Phase SASD, MOV 130 kA 1In Stock
Min.: 1
Mult.: 1
HUBER+SUHNER Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, GDT technology up to 1.0 GHz 7In Stock
Min.: 1
Mult.: 1
HUBER+SUHNER Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, Fine protectors hybrid technology, box design, bypass voltage 15 V, DC current 3 A 17In Stock
Min.: 1
Mult.: 1

E-T-A Circuit Breakers Single pole, thermal miniaturised circuit breaker designed for automotive applications. Fits into fuse blocks designed to ISO 8820-3, Type F. Automatic reset (for DC 12 V only) and open circuit (modified reset to SAE) version optional. Open circuitve 512In Stock
Min.: 1
Mult.: 1



E-T-A Circuit Breakers 508, 1P, DM, 48VDC, N/O, 10A 48In Stock
90Expected 25/09/2026
Min.: 1
Mult.: 1
Siemens Circuit Breakers BRKR 3VA51 3P 40A 25KA FTFM 5In Stock
Min.: 1
Mult.: 1
Schneider Electric Circuit Breakers NSX100H 70kA AC 3P3D 100A 2.2 1In Stock
Min.: 1
Mult.: 1
Square D Circuit Breakers MOLDED CASE CIRCUIT BREAKER 600V 90A 1In Stock
Min.: 1
Mult.: 1
HUBER+SUHNER Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, GDT technology up to 2.5 GHz 5In Stock
Min.: 1
Mult.: 1


E-T-A Circuit Breakers The 3120-N...4 IP65 rated 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...4 is ideally suite 41In Stock
Min.: 1
Mult.: 1


E-T-A Circuit Breaker Accessories 315In Stock
Min.: 1
Mult.: 1

TE Connectivity / Measurement Specialties NTC (Negative Temperature Coefficient) Thermistors SUPER STABLE GLASS NTC THERMISTOR 24In Stock
Min.: 1
Mult.: 1
Littelfuse Fuse Clips 3AG/3AB PCB FUSE CLIP WITH ANGLED LEADS 5.383In Stock
Min.: 1
Mult.: 1