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: 361,321
Select Image Part # Mfr. Description Datasheet Availability Pricing (CAD) Filter the results in the table by unit price based on your quantity. Qty. RoHS
PolyPhaser Connectorized Surge Protectors Type N M/F Coaxial RF Surge Protector, 400MHz - 1.2GHz, 300W, IP67, 36 V Max., 1mJ, 20kA, Hybrid, Bracket Down, Hole Mount 7In Stock
Min.: 1
Mult.: 1

PolyPhaser Connectorized Surge Protectors 7/16 M/F Coaxial RF Surge Protector, 800MHz - 2.5GHz, 500W, IP67, 48 V Max., 146uJ, 20kA, Hybrid, Bracket Down, Hole Mount 5In Stock
Min.: 1
Mult.: 1

PolyPhaser Connectorized Surge Protectors Type N M/F Bulkhead Coaxial RF Surge Protector, 550MHz - 2700MHz, DC Pass, 6V, IP67, 20kA, Hybrid, Bracket Up, Hole Mount 5In Stock
Min.: 1
Mult.: 1

PolyPhaser Connectorized Surge Protectors Type N F/F Coaxial RF Surge Protector, 800MHz - 2.5GHz, 300W, IP67, 6 V Max., 175uJ, 20kA, Hybrid, Bracket Up, Hole Mount 9In Stock
Min.: 1
Mult.: 1

PolyPhaser Connectorized Surge Protectors Type N/SMA F/F Bulkhead Coaxial RF Surge Protector, DC - 7GHz, 90W, IP67, 9 V Max., 5mJ, 20kA, Gas Discharge Tube 9In Stock
Min.: 1
Mult.: 1

PolyPhaser Connectorized Surge Protectors Type N M/F Bulkhead Coaxial RF Surge Protector, 10MHz - 1GHz, DC Block, 1.5kW, 3.5mJ, 20kA, Blocking Cap, Hole Mount 9In Stock
Min.: 1
Mult.: 1


E-T-A Circuit Breaker Accessories 508, DM, 20A, Distribution Module, Load, ATEX 7In Stock
Min.: 1
Mult.: 1

E-T-A Circuit Breakers 508,DM,24VDC,CL,20A,ATX 4In Stock
Min.: 1
Mult.: 1

TE Connectivity NTC Thermistors ESA PROBE-RTD PT1000 1000mm ENG MODEL 1In Stock
Min.: 1
Mult.: 1

Phoenix Contact Industrial Surge Protectors VAL-SPP-T2-275-3+1-UT-R 4In Stock
5On Order
Min.: 1
Mult.: 1

Phoenix Contact Circuit Breakers PTCB TM1 5A M1 NO P 40In Stock
Min.: 1
Mult.: 1

Phoenix Contact Industrial Surge Protectors VAL-US-SPP-120/65/3+0-R 1In Stock
9Expected 2026-06-01
Min.: 1
Mult.: 1

Phoenix Contact Industrial Surge Protectors VAL-US-SPP-240/50/2+0-R 2In Stock
8Expected 2026-07-17
Min.: 1
Mult.: 1

Phoenix Contact Industrial Surge Protectors VAL-US-SPP-600D/40-P 7In Stock
Min.: 1
Mult.: 1

Vishay Semiconductors ESD Protection Diodes / TVS Diodes 3,000In Stock
Min.: 1
Mult.: 1
Vishay Semiconductors ESD Protection Diodes / TVS Diodes 3,000In Stock
Min.: 1
Mult.: 1
Vishay Semiconductors ESD Protection Diodes / TVS Diodes 3,000In Stock
Min.: 1
Mult.: 1
Vishay Semiconductors ESD Protection Diodes / TVS Diodes Diode, TVS, uni-dir, 1000W, 20V, 5%, SMB (DO-214AA), auto-grade 2,240In Stock
Min.: 1
Mult.: 1
: 3,200

Vishay ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SOT323 14,700In Stock
Min.: 1
Mult.: 1
: 3,000

TDK Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 2 ELECT / 3000v 775In Stock
Min.: 1
Mult.: 1
: 500

Littelfuse ESD Protection Diodes / TVS Diodes TVS 600W ASYM DO214AA AEQ101 Stand of Voltage 30V 2,682In Stock
Min.: 1
Mult.: 1
: 3,000

Vishay / BC Components Resettable Fuses - PPTC PTC POLY 0603 30mA 36V E3 3,000In Stock
Min.: 1
Mult.: 1
Vishay / BC Components Resettable Fuses - PPTC PTC POLY 0805 500 mA 6V E3 3,980In Stock
Min.: 1
Mult.: 1
Vishay / BC Components Resettable Fuses - PPTC PTC POLY 1210 750mA 24V E3 3,978In Stock
Min.: 1
Mult.: 1
Vishay / BC Components Resettable Fuses - PPTC PTC POLY 1812 1500mA 12V E3 2,995In Stock
Min.: 1
Mult.: 1