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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 201 ACC- Busbar 1-pole 90deg 1 Meter X22254001 E-T-A 1: $43.70 71In Stock 1On Order	Mfr. Part No. X22254001 Mouser Part No 457-X22254001	E-T-A	Circuit Breaker Accessories 201 ACC- Busbar 1-pole 90deg 1 Meter		71In Stock 1On Order	$43.70 $37.24 $34.63 $31.14 View $30.32 $29.32	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes TVS array 4 line Bi-dir, 300W (8/20us), Stand-off voltage = 12V SMDA12Ce3/TR7 Microchip Technology 1: $1.69 1,072In Stock	Mfr. Part No. SMDA12Ce3/TR7 Mouser Part No 494-SMDA12CE3/TR7	Microchip Technology	ESD Protection Diodes / TVS Diodes TVS array 4 line Bi-dir, 300W (8/20us), Stand-off voltage = 12V	Datasheet	1,072In Stock	Cut Tape $1.69 Reel $1.42 MouseReel Available	Min.: 1 Mult.: 1 : 500
Power Outlet Strips PDUMH20HV PDUMH20HV Tripp Lite Restricted Availability	Mfr. Part No. PDUMH20HV Mouser Part No 545-PDUMH20HV	Tripp Lite	Power Outlet Strips PDUMH20HV Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability
Circuit Protection Kits Tgc/Mgde-Ms5 12-24V Time Delay 6' 500A 08075160 Littelfuse 1: $467.23 5In Stock	Mfr. Part No. 08075160 Mouser Part No 576-08075160	Littelfuse	Circuit Protection Kits Tgc/Mgde-Ms5 12-24V Time Delay 6' 500A Learn More about Littelfuse relays switches cvp	Datasheet	5In Stock	$467.23 $387.04 $336.07	Min.: 1 Mult.: 1
PTC (Positive Temperature Coefficient) Thermistors PTCCPLDD5D00A019265140Te3 Vishay / BC Components PTCCL05H190HTE PTCCL05H190HTE Vishay / BC Components 1: $1.44 3,003In Stock	Mfr. Part No. PTCCL05H190HTE Mouser Part No 594-PTCCL05H190HTE	Vishay / BC Components	PTC (Positive Temperature Coefficient) Thermistors PTCCPLDD5D00A019265140Te3	Datasheet	3,003In Stock	$1.44 $1.08 $0.861 $0.809 View $0.789 $0.664 $0.607 $0.594	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 1500W 16V Unidirect 1N6276A-E3/54 Vishay Semiconductors 1: $1.59 6,117In Stock	Mfr. Part No. 1N6276A-E3/54 Mouser Part No 625-1N6276A-E3/54	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 1500W 16V Unidirect Learn More about Vishay Semiconductors vishay semi transzorb transient voltage suppressors	Datasheet	6,117In Stock	Cut Tape $1.59 $0.995 $0.834 $0.652 Reel $0.504 View $0.504 $0.459 $0.383	Min.: 1 Mult.: 1 : 1,400
NTC (Negative Temperature Coefficient) Thermistors 50kOhm 3% Lug Term B25/50:3950K+-3% NTCGP3UH503HCZCCA TDK 1: $6.67 975In Stock	Mfr. Part No. NTCGP3UH503HCZCCA Mouser Part No 810-NTCGP3UH503HCZCC	TDK	NTC (Negative Temperature Coefficient) Thermistors 50kOhm 3% Lug Term B25/50:3950K+-3% Learn More about TDK ntcgp temperature sensors	Datasheet	975In Stock	$6.67 $6.01 $5.77 $5.47 View $5.27 $5.09 $4.72 $4.57	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NTC Thermistor 0603 4K7 J60 B-3650 B57301V2472J60 TDK 1: $0.39 11,747In Stock 8,000Expected 17/11/2026	Mfr. Part No. B57301V2472J60 Mouser Part No 871-B57301V2472J60	TDK	NTC (Negative Temperature Coefficient) Thermistors NTC Thermistor 0603 4K7 J60 B-3650 Learn More about TDK b573xv2 ntc thermistors	Datasheet	11,747In Stock 8,000Expected 17/11/2026	Cut Tape $0.39 $0.335 $0.295 $0.237 Reel $0.162 View $0.196 $0.164 $0.156 $0.138 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Circuit Breakers XT4H 250 TMF 200-2000 3P F F UL/CSA XT4HU3200AFF000XXX ABB 1: $1,823.97 3In Stock	Mfr. Part No. XT4HU3200AFF000XXX Mouser Part No 894-XT4HU3200AFF000X	ABB	Circuit Breakers XT4H 250 TMF 200-2000 3P F F UL/CSA Learn More about ABB sace tmax xt circuit breakers	Datasheet	3In Stock	$1,823.97	Min.: 1 Mult.: 1
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
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
Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, Quarter-wave stub technology 3400.17.0254 HUBER+SUHNER 1: $402.15 18In Stock	Mfr. Part No. 3400.17.0254 Mouser Part No 455-3400170254	HUBER+SUHNER	Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, Quarter-wave stub technology Learn More about HUBER+SUHNER huber suhner cable solutions	Datasheet	18In Stock	$402.15 $394.52 $389.52 View Quote	Min.: 1 Mult.: 1
Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, GDT technology up to 1.0 GHz 3401.17.0033 HUBER+SUHNER 1: $352.60 7In Stock	Mfr. Part No. 3401.17.0033 Mouser Part No 455-3401170033	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	7In Stock	$352.60 $316.77 $309.64 View Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories X20080110 E-T-A 1: $14.30 1,542In Stock	Mfr. Part No. X20080110 Mouser Part No 457-X20080110	E-T-A	Circuit Breaker Accessories	Datasheet	1,542In Stock	$14.30 $13.58 $12.89 $12.15 View $11.44 $10.73 Quote	Min.: 1 Mult.: 1
Circuit Breakers FAZ 3P 16A D CURVE ring term FAZ-D16/3-RT Eaton Electrical 1: $788.16 3In Stock	Mfr. Part No. FAZ-D16/3-RT Mouser Part No 504-FAZ-D16/3-RT	Eaton Electrical	Circuit Breakers FAZ 3P 16A D CURVE ring term Learn More about Eaton Electrical eaton ul 489 ul 1077 circuit breakers	Datasheet	3In Stock	$788.16 $523.15 $498.98 View Quote	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes TVS LEADED 30KP-CA 350V 30KPA350CA Littelfuse 1: $30.49 479In Stock 1,600Expected 28/12/2026	Mfr. Part No. 30KPA350CA Mouser Part No 576-30KPA350CA	Littelfuse	ESD Protection Diodes / TVS Diodes TVS LEADED 30KP-CA 350V Learn More about Littelfuse military uav systems	Datasheet	479In Stock 1,600Expected 28/12/2026	Cut Tape $30.49 $22.29 $21.56 $21.52 $21.42 Reel $21.41	Min.: 1 Mult.: 1 : 800
ESD Protection Diodes / TVS Diodes TVS Hi Power Diode 30KPA Axial 30KPA72A Littelfuse 1: $23.00 553In Stock	Mfr. Part No. 30KPA72A Mouser Part No 576-30KPA72A	Littelfuse	ESD Protection Diodes / TVS Diodes TVS Hi Power Diode 30KPA Axial Learn More about Littelfuse tvsdiodes	Datasheet	553In Stock	Cut Tape $23.00 $16.53 $14.69 $14.34 Reel $13.99	Min.: 1 Mult.: 1 : 800
NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, U.S. SENSOR SM103J1F Littelfuse 1: $1.77 2,400In Stock	Mfr. Part No. SM103J1F Mouser Part No 576-SM103J1F	Littelfuse	NTC (Negative Temperature Coefficient) Thermistors THERMISTOR, U.S. SENSOR Learn More about Littelfuse surface mount thermistors	Datasheet	2,400In Stock	$1.77 $1.69 $1.43 $1.40 View $1.27 $1.13 $1.00	Min.: 1 Mult.: 1
Connectorised Surge Protectors Din Rail POE Surge Suppressor, Type B MJ8-POE-B Citel 1: $116.96 89In Stock	Mfr. Part No. MJ8-POE-B Mouser Part No 703-MJ8-POE-B	Citel	Connectorised Surge Protectors Din Rail POE Surge Suppressor, Type B Learn More about Citel mj8 poe	Datasheet	89In Stock	$116.96 $96.99 $89.45 $89.44 View $89.43 $68.21 Quote	Min.: 1 Mult.: 1
PTC (Positive Temperature Coefficient) Thermistors TFPT08055K01%ET1E3 Vishay / Dale TFPT0805L5001FM TFPT0805L5001FM Vishay / Dale 1: $1.27 5,000In Stock	Mfr. Part No. TFPT0805L5001FM Mouser Part No 71-TFPT0805L5001FM	Vishay / Dale	PTC (Positive Temperature Coefficient) Thermistors TFPT08055K01%ET1E3	Datasheet	5,000In Stock	$1.27 $0.951 $0.761 $0.716 View $0.698 $0.587 $0.546 $0.50	Min.: 1 Mult.: 1
Circuit Breaker Accessories BRKR 3VA55/65/66 SUP HNDL DR ROT OPR GRY 3VA96770GC01 Siemens 1: $1,016.02 2In Stock	Mfr. Part No. 3VA96770GC01 Mouser Part No 982-3VA96770GC01	Siemens	Circuit Breaker Accessories BRKR 3VA55/65/66 SUP HNDL DR ROT OPR GRY Learn More about Siemens 3va molded case circuit breakers	Datasheet	2In Stock	$1,016.02	Min.: 1 Mult.: 1
Circuit Breakers Multi9 C60BPR 1P C 30A 10kA 277V UL489 M9F52130 Schneider Electric 1: $126.00 19In Stock 4Expected 16/11/2026 New At Mouser	Mfr. Part No. M9F52130 Mouser Part No 996-M9F52130 New At Mouser	Schneider Electric	Circuit Breakers Multi9 C60BPR 1P C 30A 10kA 277V UL489	Datasheet	19In Stock 4Expected 16/11/2026	$126.00	Min.: 1 Mult.: 1
Fuse Holder Accessories M10 Insulated Stud 908-082 Littelfuse 1: $6.17 78In Stock	Mfr. Part No. 908-082 Mouser Part No 576-908-082	Littelfuse	Fuse Holder Accessories M10 Insulated Stud	Datasheet	78In Stock	$6.17 $5.78 $5.57 $4.34 View $3.51 $3.36 $3.24	Min.: 1 Mult.: 1

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Circuit Protection

Types of Circuit Protection