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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 Breakers Circuit breaker screw-type 84 A 3RV20414RA10 Siemens 1: $1,092.84 3In Stock	Mfr. Part No. 3RV20414RA10 Mouser Part No 982-3RV20414RA10	Siemens	Circuit Breakers Circuit breaker screw-type 84 A Learn More about Siemens 3rv2 circuit breakers	Datasheet	3In Stock	$1,092.84	Min.: 1 Mult.: 1
Circuit Breakers BRKR 3VA52 3P 250A 35KA FTFM 3VA52255ED310AA0 Siemens 1: $2,440.97 1In Stock	Mfr. Part No. 3VA52255ED310AA0 Mouser Part No 982-3VA52255ED310AA0	Siemens	Circuit Breakers BRKR 3VA52 3P 250A 35KA FTFM Learn More about Siemens 3va molded case circuit breakers	Datasheet	1In Stock	$2,440.97	Min.: 1 Mult.: 1
Industrial Surge Protectors SPD T1 EMA 100KA 480V 3P3W EMA51 Square D 1: $5,750.37 1In Stock New At Mouser	Mfr. Part No. EMA51 Mouser Part No 996-EMA51 New At Mouser	Square D	Industrial Surge Protectors SPD T1 EMA 100KA 480V 3P3W	Datasheet	1In Stock	$5,750.37	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 $374.90 View 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 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
Varistors 320VAC 10% 25mm SuperioR B72225S4321K101 TDK 1: $4.36 1,090In Stock	Mfr. Part No. B72225S4321K101 Mouser Part No 871-B72225S4321K101	TDK	Varistors 320VAC 10% 25mm SuperioR Learn More about TDK epcosvaristors	Datasheet	1,090In Stock	$4.36 $3.34 $3.09 $2.67 View $2.61 $2.56 $2.45 $2.24 $1.96	Min.: 1 Mult.: 1
Triacs 25 Amp High Temperature High dvdt TRIAC-TO263 QV8025NH4TP Littelfuse 1: $8.80 984In Stock	Mfr. Part No. QV8025NH4TP Mouser Part No 576-QV8025NH4TP	Littelfuse	Triacs 25 Amp High Temperature High dvdt TRIAC-TO263 Learn More about Littelfuse qvxx25xhx alternistor triacs	Datasheet	984In Stock	$8.80 $6.00 $4.41 $4.18	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 1500 W uni-directional TVS in SMB package with TJ max. 185C T15B22AHM3/I Vishay Semiconductors 1: $1.24 3,192In Stock	Mfr. Part No. T15B22AHM3/I Mouser Part No 625-T15B22AHM3/I	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 1500 W uni-directional TVS in SMB package with TJ max. 185C Learn More about Vishay Semiconductors vishay semi esmp package evolution	Datasheet	3,192In Stock	Cut Tape $1.24 $0.573 $0.487 $0.393 Reel $0.335 View $0.365 $0.298 $0.297 $0.251	Min.: 1 Mult.: 1 : 3,200
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Next-Generation GDT 5mm 420V, REEL GDT25-42-S1-RP Bourns 1: $1.10 1,537In Stock	Mfr. Part No. GDT25-42-S1-RP Mouser Part No 652-GDT25-42-S1-RP	Bourns	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors Next-Generation GDT 5mm 420V, REEL Learn More about Bourns gdt25 gdt arrestors	Datasheet	1,537In Stock	Cut Tape $1.10 $0.993 $0.836 $0.772 Reel $0.544 View $0.694 $0.64 $0.526 MouseReel Available	Min.: 1 Mult.: 1 : 1,500
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
NTC (Negative Temperature Coefficient) Thermistors NXFT15XV103FEAB035 Murata Electronics 1: $0.52 12,821In 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	12,821In 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
NTC (Negative Temperature Coefficient) Thermistors NXFT15XV103FEAB040 Murata Electronics 1: $0.52 8,433In Stock 14,000Expected 26/11/2026	Mfr. Part No. NXFT15XV103FEAB040 Mouser Part No 81-NXFT15XV103FEAB40	Murata Electronics	NTC (Negative Temperature Coefficient) Thermistors Learn More about Murata Electronics muratanxftthermistor	Datasheet	8,433In Stock 14,000Expected 26/11/2026	$0.52 $0.394 $0.34 $0.279 View $0.259 $0.219 $0.213 $0.187 $0.182	Min.: 1 Mult.: 1
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 51In Stock 172Expected 12/11/2026	Mfr. Part No. KXT5MRHESTFP Mouser Part No 894-KXT5MRHESTFP	ABB	Circuit Breaker Accessories RHE_MB XT5 F/W M. BASE FOR ROTARY HANDLE	Datasheet	51In Stock 172Expected 12/11/2026	$123.65 $102.53 $86.00 $76.02 View $72.28 Quote	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
Industrial Surge Protectors AC Surge Protector SPD APEX IMAX Panel 120/240 Vac Split-Phase MOV 160 kA, UL 1449 5th Ed. Type 2 1101-808-MM-1 Transtector 1: $2,695.40 1In Stock 4Expected 25/12/2026 New At Mouser	Mfr. Part No. 1101-808-MM-1 Mouser Part No 21-1101-808-MM-1 New At Mouser	Transtector	Industrial Surge Protectors AC Surge Protector SPD APEX IMAX Panel 120/240 Vac Split-Phase MOV 160 kA, UL 1449 5th Ed. Type 2 Learn More about Transtector apex imax spds	Datasheet	1In Stock 4Expected 25/12/2026	$2,695.40 Quote Quote	Min.: 1 Mult.: 1
Industrial Surge Protectors AC Surge Protector SPD APEX IMAX Module 120 Vac MOV 160 kA IMAX-120S-MR Transtector 1: $515.00 10In Stock New At Mouser	Mfr. Part No. IMAX-120S-MR Mouser Part No 21-IMAX-120S-MR New At Mouser	Transtector	Industrial Surge Protectors AC Surge Protector SPD APEX IMAX Module 120 Vac MOV 160 kA	Datasheet	10In Stock	$515.00	Min.: 1 Mult.: 1
Industrial Surge Protectors AC Surge Protector SPD APEX IMAX Module 120 Vac SASD 20 kA IMAX-120S-SR Transtector 1: $910.00 2In Stock New At Mouser	Mfr. Part No. IMAX-120S-SR Mouser Part No 21-IMAX-120S-SR New At Mouser	Transtector	Industrial Surge Protectors AC Surge Protector SPD APEX IMAX Module 120 Vac SASD 20 kA	Datasheet	2In Stock	$910.00	Min.: 1 Mult.: 1

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Circuit Protection

Types of Circuit Protection