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Circuit Protection

Circuit Protection devices and components are available at Mouser from industry leading manufacturers. Mouser is an authorized distributor for many circuit protection manufacturers including Bourns, Eaton, TDK, Littelfuse, Semtech, Vishay, & more.
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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Circuit Breaker Accessories CIRCUIT BREAKER OF WIRE HARNESS S434500 Schneider Electric 1: $543.92 4In Stock New At Mouser	Mfr. Part No. S434500 Mouser Part No 996-S434500 New At Mouser	Schneider Electric	Circuit Breaker Accessories CIRCUIT BREAKER OF WIRE HARNESS	Datasheet	4In Stock	$543.92	Min.: 1 Mult.: 1
Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, Quarter-wave stub technology, NEMP tested 3400.17.0385 HUBER+SUHNER 1: $484.80 25In Stock	Mfr. Part No. 3400.17.0385 Mouser Part No 455-3400170385	HUBER+SUHNER	Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, Quarter-wave stub technology, NEMP tested Learn More about HUBER+SUHNER huber suhner cable solutions	Datasheet	25In Stock	$484.80 View Quote	Min.: 1 Mult.: 1
Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, GDT technology up to 1.0 GHz 3401.17.K HUBER+SUHNER 1: $499.02 10In Stock	Mfr. Part No. 3401.17.K Mouser Part No 455-340117K	HUBER+SUHNER	Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, GDT technology up to 1.0 GHz Learn More about HUBER+SUHNER huber suhner surge suppression solutions	Datasheet	10In Stock	$499.02 $335.23 Quote Quote	Min.: 1 Mult.: 1
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 1620-3-7.5A E-T-A 1: $10.75 378In Stock	Mfr. Part No. 1620-3-7.5A Mouser Part No 457-1620-3-7.5A	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 Learn More about E-T-A e t a 1620 circuit breakers	Datasheet	378In Stock	$10.75 $10.03 $9.47 $7.48 View $6.37 $5.98 $5.64 $5.29	Min.: 1 Mult.: 1
Connectorised Surge Protectors 800-2500MHz N type F/F LP-STR-NFF Amphenol Times Microwave Systems 1: $128.81 16In Stock	Mfr. Part No. LP-STR-NFF Mouser Part No 523-LP-STR-NFF	Amphenol Times Microwave Systems	Connectorised Surge Protectors 800-2500MHz N type F/F Learn More about Amphenol Times Microwave Systems amphenol times protect devices	Datasheet	16In Stock	$128.81 $115.10 $108.93 $104.83 View Quote	Min.: 1 Mult.: 1
Power Outlet Strips 32 C13/ 6 C19 AC OUT PDUMV30HV Tripp Lite Restricted Availability	Mfr. Part No. PDUMV30HV Mouser Part No 545-PDUMV30HV	Tripp Lite	Power Outlet Strips 32 C13/ 6 C19 AC OUT Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability
SCR Modules 1200 Volt 60 Amp 890 Amp IFSM Vishay Semiconductors VS-VSKH56/12 VS-VSKH56/12 Vishay Semiconductors 1: $45.08 69In Stock	Mfr. Part No. VS-VSKH56/12 Mouser Part No 844-VSKH56/12	Vishay Semiconductors	SCR Modules 1200 Volt 60 Amp 890 Amp IFSM	Datasheet	69In Stock	$45.08 $38.44 $34.01	Min.: 1 Mult.: 1
Varistors 20V 1200A 470000pF B72547E3200K000 TDK 1: $5.15 4,805In Stock 6,000Expected 01/12/2026	Mfr. Part No. B72547E3200K000 Mouser Part No 871-B72547E3200K000	TDK	Varistors 20V 1200A 470000pF Learn More about TDK automotive shcvs	Datasheet	4,805In Stock 6,000Expected 01/12/2026	$5.15 $3.32 $2.98 $2.58 View $2.45 $2.23 $1.89 $1.87	Min.: 1 Mult.: 1
Circuit Breakers Cir Brkr Hyd Mag IEG111-1-61-20.0-A-01-V AIRPAX 1: $177.47 9In Stock	Mfr. Part No. IEG111-1-61-20.0-A-01-V Mouser Part No 874-IEG111161200A01V	AIRPAX	Circuit Breakers Cir Brkr Hyd Mag	Datasheet	9In Stock	$177.47 $154.98 $107.71 $94.64 View $78.32 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories BREAKER MC FLANGE MAX-FLEX HDL FHOHS Siemens 1: $995.20 2In Stock	Mfr. Part No. FHOHS Mouser Part No 982-FHOHS	Siemens	Circuit Breaker Accessories BREAKER MC FLANGE MAX-FLEX HDL	Datasheet	2In Stock	$995.20	Min.: 1 Mult.: 1
Fuse Holder Accessories ZCase Box Cover 873-716 Littelfuse 1: $7.97 93In Stock	Mfr. Part No. 873-716 Mouser Part No 576-873-716	Littelfuse	Fuse Holder Accessories ZCase Box Cover		93In Stock	$7.97 $7.08 $6.76 $5.20 View $4.29 $3.97 $3.78 $3.68	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors NextGen HV GDT 8 mm 1300 V GDT28H-130-B Bourns 1: $2.20 397In Stock	Mfr. Part No. GDT28H-130-B Mouser Part No 652-GDT28H-130-B	Bourns	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors NextGen HV GDT 8 mm 1300 V Learn More about Bourns gdt212e gdt216e gdt220e gdt225e gdts	Datasheet	397In Stock	$2.20 $1.88 $1.51 $1.29 View $1.25 $1.04 $1.00 $0.958 $0.929	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors NextGen HV GDT 8 mm 3300 V GDT28H-330-B Bourns 1: $2.20 397In Stock	Mfr. Part No. GDT28H-330-B Mouser Part No 652-GDT28H-330-B	Bourns	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors NextGen HV GDT 8 mm 3300 V Learn More about Bourns gdt212e gdt216e gdt220e gdt225e gdts	Datasheet	397In Stock	$2.20 $1.88 $1.51 $1.29 View $1.25 $1.04 $1.00 $0.954 $0.929	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes TVS,600W,12V,DFN3820A BIDIR Vishay 6DFN12CA-M3/H 6DFN12CA-M3/H Vishay 1: $0.86 4,163In Stock	Mfr. Part No. 6DFN12CA-M3/H Mouser Part No 78-6DFN12CA-M3/H	Vishay	ESD Protection Diodes / TVS Diodes TVS,600W,12V,DFN3820A BIDIR	Datasheet	4,163In Stock	Cut Tape $0.86 $0.537 $0.35 $0.264 Reel $0.22 View $0.24 $0.214 $0.154	Min.: 1 Mult.: 1 : 3,500
ESD Protection Diodes / TVS Diodes 600W,180V 5%,UNIDIR,SMB TVS Vishay Semiconductors P6SMB180AHM3_B/I P6SMB180AHM3_B/I Vishay Semiconductors 1: $0.98 1,900In Stock	Mfr. Part No. P6SMB180AHM3_B/I Mouser Part No 78-P6SMB180AHM3BI	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 600W,180V 5%,UNIDIR,SMB TVS Learn More about Vishay Semiconductors vishay semi esmp package evolution	Datasheet	1,900In Stock	Cut Tape $0.98 $0.608 $0.397 $0.299 Reel $0.25 View $0.272 $0.192	Min.: 1 Mult.: 1 : 3,200
ESD Protection Diodes / TVS Diodes 600W,36V 5%,BIDIR,SMB TVS Vishay Semiconductors P6SMB36CAHE3_B/H P6SMB36CAHE3_B/H Vishay Semiconductors 1: $1.16 6,063In Stock	Mfr. Part No. P6SMB36CAHE3_B/H Mouser Part No 78-P6SMB36CAHE3BH	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 600W,36V 5%,BIDIR,SMB TVS Learn More about Vishay Semiconductors vishay semi esmp package evolution	Datasheet	6,063In Stock	Cut Tape $1.16 $0.725 $0.476 $0.35 Reel $0.317 View $0.291 $0.282 $0.23 $0.219	Min.: 1 Mult.: 1 : 750
ESD Protection Diodes / TVS Diodes 1KW,30V 5%,UNIDIR,SMB TVS Vishay Semiconductors SMB10J30AHE3_B/I SMB10J30AHE3_B/I Vishay Semiconductors 1: $1.44 2,579In Stock	Mfr. Part No. SMB10J30AHE3_B/I Mouser Part No 78-SMB10J30AHE3BI	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 1KW,30V 5%,UNIDIR,SMB TVS Learn More about Vishay Semiconductors vishay semi esmp package evolution	Datasheet	2,579In Stock	Cut Tape $1.44 $0.899 $0.59 $0.433 Reel $0.362 View $0.395 $0.299	Min.: 1 Mult.: 1 : 3,200
ESD Protection Diodes / TVS Diodes 800W,5.0V 5%,BIDIR,SMB TVS Vishay Semiconductors SMB8J5.0CAHM3_B/I SMB8J5.0CAHM3_B/I Vishay Semiconductors 1: $1.45 3,069In Stock	Mfr. Part No. SMB8J5.0CAHM3_B/I Mouser Part No 78-SMB8J5.0CAHM3BI	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 800W,5.0V 5%,BIDIR,SMB TVS Learn More about Vishay Semiconductors vishay semi esmp package evolution	Datasheet	3,069In Stock	Cut Tape $1.45 $0.902 $0.593 $0.435 Reel $0.364 View $0.396 $0.30	Min.: 1 Mult.: 1 : 3,200
ESD Protection Diodes / TVS Diodes 600W,14V 5%,BIDIR,SMB TVS SMBJ14CAHE3_B/I Vishay Semiconductors 1: $1.15 2,765In Stock	Mfr. Part No. SMBJ14CAHE3_B/I Mouser Part No 78-SMBJ14CAHE3BI	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 600W,14V 5%,BIDIR,SMB TVS Learn More about Vishay Semiconductors vishay semi esmp package evolution	Datasheet	2,765In Stock	Cut Tape $1.15 $0.719 $0.469 $0.354 Reel $0.295 View $0.322 $0.227	Min.: 1 Mult.: 1 : 3,200
ESD Protection Diodes / TVS Diodes 600W,18V 5%,UNIDIR,SMB TVS SMBJ18AHE3_B/H Vishay Semiconductors 1: $0.91 5,419In Stock	Mfr. Part No. SMBJ18AHE3_B/H Mouser Part No 78-SMBJ18AHE3BH	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 600W,18V 5%,UNIDIR,SMB TVS Learn More about Vishay Semiconductors vishay semi esmp package evolution	Datasheet	5,419In Stock	Cut Tape $0.91 $0.567 $0.37 $0.181 Reel $0.167 View $0.156 $0.155	Min.: 1 Mult.: 1 : 750
Industrial Surge Protectors AC Surge Protector SPD I2R DIN-Rail 120 Vac Single-Phase SASD 7 kA, UL 1449 4th Ed. Status LED 1101-627 Transtector 1: $572.20 17In Stock New At Mouser	Mfr. Part No. 1101-627 Mouser Part No 21-1101-627 New At Mouser	Transtector	Industrial Surge Protectors AC Surge Protector SPD I2R DIN-Rail 120 Vac Single-Phase SASD 7 kA, UL 1449 4th Ed. Status LED Learn More about Transtector i2r din rail spds	Datasheet	17In Stock	$572.20 $449.99	Min.: 1 Mult.: 1
Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, GDT technology up to 2.5 GHz, with SEMPER GDT 90 V 3402.26.0006-EX HUBER+SUHNER 1: $355.25 11In Stock	Mfr. Part No. 3402.26.0006-EX Mouser Part No 455-3402260006EX	HUBER+SUHNER	Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, GDT technology up to 2.5 GHz, with SEMPER GDT 90 V Learn More about HUBER+SUHNER huber suhner surge suppression solutions	Datasheet	11In Stock	$355.25 $322.60 $318.51 View Quote	Min.: 1 Mult.: 1
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 3120-N321-H7M1-W01F-16A E-T-A 1: $61.66 83In Stock	Mfr. Part No. 3120-N321-H7M1-W01F-16A Mouser Part No 457-321H7M1W01F16A	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 Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	83In Stock	$61.66 $52.57 $48.61 $42.68 View $36.49 $34.33 Quote	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors K 164/470 K/J52 5% NTC Thermistor B57164K0474J052 TDK 1: $0.78 5,847In Stock	Mfr. Part No. B57164K0474J052 Mouser Part No 871-B57164K0474J052	TDK	NTC (Negative Temperature Coefficient) Thermistors K 164/470 K/J52 5% NTC Thermistor Learn More about TDK epcos temperature sensor systems	Datasheet	5,847In Stock	Cut Tape $0.78 $0.736 $0.622 $0.585 View Reel $0.428 $0.57 $0.499 $0.428	Min.: 1 Mult.: 1 : 1,500
Circuit Breakers Cir Brkr,HydMag LELBXB1-1REC4-70014-40 AIRPAX 1: $102.28 18In Stock	Mfr. Part No. LELBXB1-1REC4-70014-40 Mouser Part No 874-BXB11REC47001440	AIRPAX	Circuit Breakers Cir Brkr,HydMag	Datasheet	18In Stock	$102.28 $89.29 $62.08 $54.55 View $45.17 $41.40 Quote	Min.: 1 Mult.: 1

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Circuit Protection

Types of Circuit Protection