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: 362 093
Select Image Part # Mfr. Description Datasheet Availability Pricing (CRC) Filter the results in the table by unit price based on your quantity. Qty. RoHS


E-T-A Circuit Breakers 508,DM,24VDC,CL,2-3-3.6,CL2,ATX 4In Stock
Min.: 1
Mult.: 1

TE Connectivity NTC Thermistors ESA PROBE-RTD PT1000 3000mm ENG MODEL 2In Stock
Min.: 1
Mult.: 1

Phoenix Contact Industrial Surge Protectors VAL-US-SPP-120/50/1+1-R 2In Stock
42On Order
Min.: 1
Mult.: 1

Phoenix Contact Industrial Surge Protectors VAL-US-SPP-277/50/1+1-R 5In Stock
Min.: 1
Mult.: 1

TDK NTC Thermistors SMD NTC Thermistor 0805 10kOhm 1% B-3455 HT Series 2 800In Stock
Min.: 1
Mult.: 1
: 4 000

PolyPhaser Connectorized Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 2.0GHz - 6.0GHz, DC Block 10W, 10kA, Blocking Capacitor 9In Stock
Min.: 1
Mult.: 1


PolyPhaser Surge Protection Accessories Hardware Kit, 108-1118B 28In Stock
Min.: 1
Mult.: 1

PolyPhaser Connectorized Surge Protectors TNC F/F Coaxial RF Surge Protector, DC - 50MHz, 1W, IP67, 15 V Max., 1mJ, 20kA, Hybrid, Bracket Down, Hole Mount 9In Stock
Min.: 1
Mult.: 1

PolyPhaser Connectorized Surge Protectors Type N F/F Coaxial RF Surge Protector, 400MHz - 1.2GHz, 300W, IP67, 36 V Max., 1.5mJ, 20kA, Hybrid, Bracket Down, Hole Mount 8In Stock
36On Order
Min.: 1
Mult.: 1

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 TNC M/F Bulkhead Coaxial RF Surge Protector, 700MHz - 2.5GHz, DC Block, 500W, IP67, .5uJ, 18kA, Filter 2In 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 3In Stock
4Expected 9/7/2026
Min.: 1
Mult.: 1

PolyPhaser Connectorized Surge Protectors UHF F/F Bulkhead Coaxial RF Surge Protector, 1.5MHz - 700MHz, DC Block, 3kW, 20mJ, 50kA, Blocking Cap, Hole Mount 11In 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 5In 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 11In 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-T2-275-1+0-UT 3In Stock
2Expected 9/24/2026
Min.: 1
Mult.: 1

Phoenix Contact Industrial Surge Protectors VAL-US-SPP-240/50/2+0-R 1In Stock
8Expected 8/31/2026
Min.: 1
Mult.: 1

TDK NTC Thermistors SMD NTC Thermistor 0603 10kOhm 1% B-3624 soft 2 800In Stock
Min.: 1
Mult.: 1
: 4 000

PolyPhaser Surge Protection Accessories Flange to Bulkhead Type N Adapter Kit 60In Stock
25Expected 8/14/2026
Min.: 1
Mult.: 1

PolyPhaser Connectorized Surge Protectors 75 Ohm Type F F/F Bulkhead Coaxial RF Surge Protector, DC - 2.5GHz, 50W, IP67, 60 V Max., 10kA, Gas Discharge Tube 5In Stock
17Expected 8/14/2026
Min.: 1
Mult.: 1

PolyPhaser Connectorized Surge Protectors Type N M/F Coaxial RF Surge Protector, 1.5MHz - 700MHz, DC Block, 2kW, 10mJ, 50kA, Blocking Cap, Bracket Up, Hole Mount 7In Stock
3Expected 8/21/2026
Min.: 1
Mult.: 1