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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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Types of Circuit Protection

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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.
Triacs 25 Amp High Temperature High dvdt TRIAC-TO263 QV6025NH5TP Littelfuse 1: $8.75 996In Stock	Mfr. Part No. QV6025NH5TP Mouser Part No 576-QV6025NH5TP	Littelfuse	Triacs 25 Amp High Temperature High dvdt TRIAC-TO263 Learn More about Littelfuse qvxx25xhx alternistor triacs	Datasheet	996In Stock	$8.75 $4.77 $4.38 $4.15	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 1.5KW,91V 5%,UNIDIR,SMC TVS 1.5SMC91AHE3_A/I Vishay Semiconductors 1: $1.40 3,734In Stock	Mfr. Part No. 1.5SMC91AHE3_A/I Mouser Part No 78-1.5SMC91AHE3_A/I	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 1.5KW,91V 5%,UNIDIR,SMC TVS Learn More about Vishay Semiconductors vishay 1point5smc tvs diodes	Datasheet	3,734In Stock	Cut Tape $1.40 $0.875 $0.574 $0.422 Reel $0.319 View $0.384 $0.291 $0.288 $0.286	Min.: 1 Mult.: 1 : 3,500
ESD Protection Diodes / TVS Diodes ESD 24V UNI TA6L24AHM3/H Vishay Semiconductors 1: $0.50 5,940In Stock	Mfr. Part No. TA6L24AHM3/H Mouser Part No 78-TA6L24AHM3/H	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes ESD 24V UNI	Datasheet	5,940In Stock	Cut Tape $0.50 $0.282 $0.241 $0.199 Reel $0.175 View $0.197 $0.166	Min.: 1 Mult.: 1 : 3,500
Industrial Surge Protectors TLP410UCUFOAM TLP410UCUFOAM Tripp Lite Restricted Availability	Mfr. Part No. TLP410UCUFOAM Mouser Part No 545-TLP410UCUFOAM	Tripp Lite	Industrial Surge Protectors TLP410UCUFOAM Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability
ESD Protection Diodes / TVS Diodes 400W,15V 5%,UNIDIR,SMA TVS SMAJ15AHM3_A/H Vishay Semiconductors 1: $0.82 8,815In Stock	Mfr. Part No. SMAJ15AHM3_A/H Mouser Part No 78-SMAJ15AHM3_A/H	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,15V 5%,UNIDIR,SMA TVS	Datasheet	8,815In Stock	Cut Tape $0.82 $0.366 $0.322 $0.244 Reel $0.179 View $0.20 $0.154 $0.128	Min.: 1 Mult.: 1 : 1,800
ESD Protection Diodes / TVS Diodes 1.5KW,18V 5%,UNIDIR,SMC TVS SMCJ18AHM3_A/H Vishay Semiconductors 1: $1.37 2,392In Stock	Mfr. Part No. SMCJ18AHM3_A/H Mouser Part No 78-SMCJ18AHM3_A/H	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 1.5KW,18V 5%,UNIDIR,SMC TVS	Datasheet	2,392In Stock	Cut Tape $1.37 $0.861 $0.564 $0.436 Reel $0.368 View $0.351 $0.331	Min.: 1 Mult.: 1 : 850
NTC (Negative Temperature Coefficient) Thermistors NCU15XW152E60RC Murata Electronics 1: $0.13 9,605In Stock	Mfr. Part No. NCU15XW152E60RC Mouser Part No 81-NCU15XW152E60RC	Murata Electronics	NTC (Negative Temperature Coefficient) Thermistors Learn More about Murata Electronics murata ncu ntc thermistors	Datasheet	9,605In Stock	Cut Tape $0.13 $0.112 $0.099 $0.081 Reel $0.057 View $0.071 $0.068 $0.061 $0.053 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Industrial Surge Protectors AC Surge Protector SPD MCP Panel 120/240 Vac Split-Phase SASD, MOV 130 kA 1101-424 Transtector 1: $1,741.14 1In Stock New At Mouser	Mfr. Part No. 1101-424 Mouser Part No 21-1101-424 New At Mouser	Transtector	Industrial Surge Protectors AC Surge Protector SPD MCP Panel 120/240 Vac Split-Phase SASD, MOV 130 kA	Datasheet	1In Stock	$1,741.14	Min.: 1 Mult.: 1
Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, Fine protectors hybrid technology, box design, bypass voltage 15 V, DC current 3 A 3403.17.0045 HUBER+SUHNER 1: $470.18 14In Stock	Mfr. Part No. 3403.17.0045 Mouser Part No 455-3403.17.0045	HUBER+SUHNER	Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, Fine protectors hybrid technology, box design, bypass voltage 15 V, DC current 3 A Learn More about HUBER+SUHNER huber suhner surge suppression solutions	Datasheet	14In Stock	$470.18 View Quote	Min.: 1 Mult.: 1
Circuit Breakers 508, 1P, DM, 48VDC, N/O, 10A ESX10-TC-101-DC48V-10A E-T-A 1: $113.81 32In Stock 177On Order	Mfr. Part No. ESX10-TC-101-DC48V-10A Mouser Part No 457-X10TC101DC48V10A	E-T-A	Circuit Breakers 508, 1P, DM, 48VDC, N/O, 10A	Datasheet	32In Stock 177On Order On Order Ship Dates Mfr. No: ESX10-TC-101-DC48V-10A Stock: 32 Can Dispatch Immediately On Order: 85 Expected 14/12/2026 92 Expected 25/12/2026 Factory Lead Time: 12 Weeks	$113.81 $113.05 $89.68 $88.13 View Quote	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NXFT15XV103FEAB035 Murata Electronics 1: $0.52 12,721In Stock 8,000Expected 25/11/2026	Mfr. Part No. NXFT15XV103FEAB035 Mouser Part No 81-NXFT15XV103FEAB35	Murata Electronics	NTC (Negative Temperature Coefficient) Thermistors Learn More about Murata Electronics muratanxftthermistor	Datasheet	12,721In Stock 8,000Expected 25/11/2026	$0.52 $0.394 $0.34 $0.279 View $0.246 $0.235	Min.: 1 Mult.: 1 Max.: 3,000
Circuit Breakers Cir Brkr Hyd Mag 219-3-8303-11 AIRPAX 1: $335.45 4In Stock	Mfr. Part No. 219-3-8303-11 Mouser Part No 874-2193830311	AIRPAX	Circuit Breakers Cir Brkr Hyd Mag Learn More about AIRPAX sensata 209 219 229 249 279 circuit breakers	Datasheet	4In Stock	$335.45 $293.00 $203.57 $178.88 View Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories RHE_MB XT5 F/W M. BASE FOR ROTARY HANDLE KXT5MRHESTFP ABB 1: $123.65 86In Stock 137Expected 25/11/2026	Mfr. Part No. KXT5MRHESTFP Mouser Part No 894-KXT5MRHESTFP	ABB	Circuit Breaker Accessories RHE_MB XT5 F/W M. BASE FOR ROTARY HANDLE	Datasheet	86In Stock 137Expected 25/11/2026	$123.65 $102.53 $86.00 $76.02 View $72.28 Quote	Min.: 1 Mult.: 1
Circuit Breakers XT4H 250 TMF 150-1500 3P F F UL/CSA XT4HU3150AFF000XXX ABB 1: $1,769.56 1In Stock 2Expected 16/11/2026 New At Mouser	Mfr. Part No. XT4HU3150AFF000XXX Mouser Part No 894-XT4HU3150AFF000X New At Mouser	ABB	Circuit Breakers XT4H 250 TMF 150-1500 3P F F UL/CSA Learn More about ABB sace tmax xt circuit breakers	Datasheet	1In Stock 2Expected 16/11/2026	$1,769.56	Min.: 1 Mult.: 1
Circuit Breakers XT5H 400 E.DIP LS/I 400 3P UL XT5HU340AEFF000XXX ABB 1: $3,052.76 2In Stock New At Mouser	Mfr. Part No. XT5HU340AEFF000XXX Mouser Part No 894-XT5HU340AEFF000X New At Mouser	ABB	Circuit Breakers XT5H 400 E.DIP LS/I 400 3P UL Learn More about ABB sace tmax xt circuit breakers	Datasheet	2In Stock	$3,052.76	Min.: 1 Mult.: 1
Circuit Breakers BRKR 3VA51 3P 80A 25KA FTFM AL 3VA51804ED360AA0 Siemens 1: $973.14 2In Stock	Mfr. Part No. 3VA51804ED360AA0 Mouser Part No 982-3VA51804ED360AA0	Siemens	Circuit Breakers BRKR 3VA51 3P 80A 25KA FTFM AL Learn More about Siemens 3va molded case circuit breakers	Datasheet	2In Stock	$973.14	Min.: 1 Mult.: 1
Circuit Breaker Accessories BREAKER 3VA5 125A PL ROT HDL 4X ILUM LOK 3VA91370FK23 Siemens 1: $625.83 5In Stock	Mfr. Part No. 3VA91370FK23 Mouser Part No 982-3VA91370FK23	Siemens	Circuit Breaker Accessories BREAKER 3VA5 125A PL ROT HDL 4X ILUM LOK Learn More about Siemens 3va molded case circuit breakers	Datasheet	5In Stock	$625.83 $515.11 $506.07 View Quote	Min.: 1 Mult.: 1
Circuit Breakers MOLDED CASE CIRCUIT BREAKER 600V 90A HGF36090 Square D 1: $1,701.26 1In Stock New At Mouser	Mfr. Part No. HGF36090 Mouser Part No 996-HGF36090 New At Mouser	Square D	Circuit Breakers MOLDED CASE CIRCUIT BREAKER 600V 90A	Datasheet	1In Stock	$1,701.26	Min.: 1 Mult.: 1
Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, GDT technology up to 2.5 GHz 3402.41.A HUBER+SUHNER 1: $474.02 5In Stock	Mfr. Part No. 3402.41.A Mouser Part No 455-340241A	HUBER+SUHNER	Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, GDT technology up to 2.5 GHz Learn More about HUBER+SUHNER huber suhner surge suppression solutions	Datasheet	5In Stock	$474.02 $391.82 $375.03 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-N521-P7T1-W01D-15A E-T-A 1: $44.49 100In Stock	Mfr. Part No. 3120-N521-P7T1-W01D-15A Mouser Part No 457-521P7T1W01D15	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	100In Stock	$44.49 $36.91 $34.70 $29.75 View $26.23 $25.93 Quote	Min.: 1 Mult.: 1
Circuit Breakers Single pole miniaturised magnetic circuit breakers with unique high-speed operating mechanism and push/pull on/off manual actuation. Fitted with electrically separate excitation and switching circuits, and one pair of auxiliary contac 808-H-0.4A E-T-A 1: $62.71 103In Stock	Mfr. Part No. 808-H-0.4A Mouser Part No 457-808-H-0.4A	E-T-A	Circuit Breakers Single pole miniaturised magnetic circuit breakers with unique high-speed operating mechanism and push/pull on/off manual actuation. Fitted with electrically separate excitation and switching circuits, and one pair of auxiliary contac	Datasheet	103In Stock	$62.71 $52.02 $48.93 $38.35 View Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories Y30105902 E-T-A 1: $2.31 2,619In Stock 2,300Expected 17/11/2026	Mfr. Part No. Y30105902 Mouser Part No 457-Y-301-059-02	E-T-A	Circuit Breaker Accessories		2,619In Stock 2,300Expected 17/11/2026	$2.31 $2.25 $2.18 $1.83 View $1.52 $1.38 $1.27 $0.906 $0.833	Min.: 1 Mult.: 1
Circuit Breakers FAZ 2P 16A C CURVE ring term Eaton Electrical FAZ-C16/2-RT FAZ-C16/2-RT Eaton Electrical 1: $482.36 13In Stock	Mfr. Part No. FAZ-C16/2-RT Mouser Part No 504-FAZ-C16/2-RT	Eaton Electrical	Circuit Breakers FAZ 2P 16A C CURVE ring term Learn More about Eaton Electrical eaton ul 489 ul 1077 circuit breakers	Datasheet	13In Stock	$482.36 $399.58 $368.26 View Quote	Min.: 1 Mult.: 1
Power Outlet Strips 120V 30A;L5-30P PLUG 16 5-15/20R AC Recep PDUMH30NET Tripp Lite Restricted Availability	Mfr. Part No. PDUMH30NET Mouser Part No 545-PDUMH30NET	Tripp Lite	Power Outlet Strips 120V 30A;L5-30P PLUG 16 5-15/20R AC Recep Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability
Thyristor Surge Protection Devices - TSPD PROTECTOR - SINGLE BIDIRECTIONAL TISP4125H3BJR-S Bourns 1: $1.56 8,353In Stock	Mfr. Part No. TISP4125H3BJR-S Mouser Part No 652-TISP4125H3BJR-S	Bourns	Thyristor Surge Protection Devices - TSPD PROTECTOR - SINGLE BIDIRECTIONAL Learn More about Bourns TISP protectors for VDSL GFast	Datasheet	8,353In Stock	Cut Tape $1.56 $0.958 $0.631 $0.496 Reel $0.383 View $0.424 $0.34 $0.32 MouseReel Available	Min.: 1 Mult.: 1 : 3,000

Circuit Protection

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Circuit Protection

Types of Circuit Protection