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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.
ESD Protection Diodes / TVS Diodes 600W,16V 5%, DFN3820A TVS 6DFN16A-M3/I Vishay Semiconductors 1: $0.76 27,820In Stock	Mfr. Part No. 6DFN16A-M3/I Mouser Part No 78-6DFN16A-M3/I	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 600W,16V 5%, DFN3820A TVS Learn More about Vishay Semiconductors vishay 6dfn12a to 6dfn51a tvs diodes	Datasheet	27,820In Stock	Cut Tape $0.76 $0.346 $0.305 $0.232 Reel $0.165 View $0.213 $0.209 $0.152	Min.: 1 Mult.: 1 : 14,000
Thermal Cut-offs TCO, High Current, SMD, 55C, Self Hold AEC-Q200 SD55ABB Bourns 1: $1.96 2,825In Stock	Mfr. Part No. SD55ABB Mouser Part No 652-SD55ABB	Bourns	Thermal Cut-offs TCO, High Current, SMD, 55C, Self Hold AEC-Q200 Learn More about Bourns ad sd miniature tco devices	Datasheet	2,825In Stock	Cut Tape $1.96 $1.86 $1.76 $1.68 View Reel $1.07 $1.61 $1.35 $1.25 $1.21 $1.07 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Triacs Triacs 40 Amp 600 Volt TG40E60 SanRex 1: $14.57 7,335In Stock	Mfr. Part No. TG40E60 Mouser Part No 197-TG40E60	SanRex	Triacs Triacs 40 Amp 600 Volt Learn More about SanRex tg tab terminal triacs	Datasheet	7,335In Stock	$14.57 $10.37 $10.20 $7.55 View Quote	Min.: 1 Mult.: 1
Connectorised Surge Protectors 1-port Outdoor Surge protector PD-OUT/SP11 Microchip Technology 1: $95.39 148In Stock	Mfr. Part No. PD-OUT/SP11 Mouser Part No 494-PD-OUT/SP11	Microchip Technology	Connectorised Surge Protectors 1-port Outdoor Surge protector Learn More about Microchip Technology microsemi microchip poe midspans	Datasheet	148In Stock	$95.39 $87.35	Min.: 1 Mult.: 1
Resettable Fuses - PPTC Fuse 0ZCF0185FF2C Bel Fuse 1: $0.32 130,840In Stock	Mfr. Part No. 0ZCF0185FF2C Mouser Part No 530-0ZCF0185FF2C	Bel Fuse	Resettable Fuses - PPTC Fuse Learn More about Bel Fuse 0zcf resettable pptc fuses	Datasheet	130,840In Stock	Cut Tape $0.32 $0.241 $0.219 $0.207 Reel $0.165 View $0.199 $0.18 $0.152 $0.13 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Surface Mount Fuses 125VAC 3A .034ohms 452 NANO2 0452003.NRL Littelfuse 1: $3.27 12,960In Stock	Mfr. Part No. 0452003.NRL Mouser Part No 576-0452003.NRL	Littelfuse	Surface Mount Fuses 125VAC 3A .034ohms 452 NANO2 Learn More about Littelfuse 452 454 smt fuses	Datasheet	12,960In Stock	Cut Tape $3.27 $2.76 $2.23 $1.91 View Reel $1.38 $1.84 $1.58 $1.46 $1.38 $1.38 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
Surface Mount Fuses 32VAC 5A .027ohms 458 NANO2 0458005.DR Littelfuse 1: $2.34 13,283In Stock	Mfr. Part No. 0458005.DR Mouser Part No 576-0458005.DR	Littelfuse	Surface Mount Fuses 32VAC 5A .027ohms 458 NANO2 Learn More about Littelfuse nano fuses	Datasheet	13,283In Stock	Cut Tape $2.34 $2.08 $1.44 $1.33 View Reel $1.02 $1.22 $1.11 $1.02 MouseReel Available	Min.: 1 Mult.: 1 : 1,500
Automotive Fuses 30A Low Profile 0895030.Z Littelfuse 1: $2.62 11,859In Stock	Mfr. Part No. 0895030.Z Mouser Part No 576-0895030.Z	Littelfuse	Automotive Fuses 30A Low Profile	Datasheet	11,859In Stock	$2.62 $2.17 $1.86 $1.66 View $1.45 $1.32 $1.15 $1.12 $1.11	Min.: 1 Mult.: 1
Automotive Fuses STRIP 30 80A W/O HOUSING 156.5610.5801 Littelfuse 1: $1.33 29,305In Stock	Mfr. Part No. 156.5610.5801 Mouser Part No 576-156.5610.5801	Littelfuse	Automotive Fuses STRIP 30 80A W/O HOUSING	Datasheet	29,305In Stock	$1.33 $1.11 $1.02 $0.845 View $0.633 $0.547 $0.53	Min.: 1 Mult.: 1
Resettable Fuses - PPTC 1.85A 33V 2920 2920L185DR Littelfuse 1: $0.82 45,012In Stock 40,500Expected 24/12/2026	Mfr. Part No. 2920L185DR Mouser Part No 576-2920L185	Littelfuse	Resettable Fuses - PPTC 1.85A 33V 2920 Learn More about Littelfuse 2920l polyswitch resettable fuses	Datasheet	45,012In Stock 40,500Expected 24/12/2026	Cut Tape $0.82 $0.71 $0.623 $0.575 Reel $0.33 View $0.517 $0.477 $0.32 MouseReel Available	Min.: 1 Mult.: 1 : 1,500
Fuse Holder HWB18 w/ TPAs PDM31002ZXM Littelfuse 1: $40.16 837In Stock	Mfr. Part No. PDM31002ZXM Mouser Part No 576-PDM31002ZXM	Littelfuse	Fuse Holder HWB18 w/ TPAs Learn More about Littelfuse hwb18	Datasheet	837In Stock	$40.16 $33.32 $30.74 $25.46 View $23.47 $21.05	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 20V 2.2A 4 CHANNEL SP724AHTG Littelfuse 1: $1.92 105,772In Stock	Mfr. Part No. SP724AHTG Mouser Part No 576-SP724AHTG	Littelfuse	ESD Protection Diodes / TVS Diodes 20V 2.2A 4 CHANNEL Learn More about Littelfuse lightning tvs spa diodes	Datasheet	105,772In Stock	Cut Tape $1.92 $1.21 $1.03 $0.958 View Reel $0.733 $0.851 $0.84 $0.733 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Circuit Breakers TMC 81C 20A 2907573 Phoenix Contact 1: $21.57 1,640In Stock	Mfr. Part No. 2907573 Mouser Part No 651-2907573	Phoenix Contact	Circuit Breakers TMC 81C 20A Learn More about Phoenix Contact TMC thermomagnetic circuit breakers	Datasheet	1,640In Stock	$21.57	Min.: 1 Mult.: 1
Resettable Fuses - PPTC 15V 100MA-HD 40A MAX MF-FSMF010X-2 Bourns 1: $0.45 104,613In Stock	Mfr. Part No. MF-FSMF010X-2 Mouser Part No 652-MF-FSMF010X-2	Bourns	Resettable Fuses - PPTC 15V 100MA-HD 40A MAX Learn More about Bourns multifuse	Datasheet	104,613In Stock	Cut Tape $0.45 $0.323 $0.29 $0.251 View Reel $0.20 $0.23 $0.217 $0.206 $0.201 $0.20 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
Surface Mount Fuses 1.5A 110V TIME DELAY SF-1206SA150W-2 Bourns 1: $0.94 114,141In Stock	Mfr. Part No. SF-1206SA150W-2 Mouser Part No 652-SF-1206SA150W-2	Bourns	Surface Mount Fuses 1.5A 110V TIME DELAY Learn More about Bourns aec q200 singlfuse fuses	Datasheet	114,141In Stock	Cut Tape $0.94 $0.866 $0.718 $0.662 Reel $0.436 View $0.595 $0.549 $0.506 $0.401 MouseReel Available	Min.: 1 Mult.: 1 : 3,500
Circuit Breakers 40A TOGGLE ACTUATOR W31-X2M1G-40 TE Connectivity / P&B 1: $57.92 422In Stock	Mfr. Part No. W31-X2M1G-40 Mouser Part No 655-W31-X2M1G-40	TE Connectivity / P&B	Circuit Breakers 40A TOGGLE ACTUATOR	Datasheet	422In Stock	$57.92 $57.00 $51.15 $48.65 View $45.77 $45.76 Quote	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors THERMISTOR 311P18-06S7R6 TE Connectivity / Measurement Specialties 1: $578.54 41In Stock	Mfr. Part No. 311P18-06S7R6 Mouser Part No 657-311P18-06S7R6	TE Connectivity / Measurement Specialties	NTC (Negative Temperature Coefficient) Thermistors THERMISTOR	Datasheet	41In Stock	$578.54 $528.92 $487.21 $456.80 View Quote	Min.: 1 Mult.: 1
SCRs 20A If; 1200V Vr TO-247AD 3L VS-30TPS12LHM3 Vishay Semiconductors 1: $5.91 6,621In Stock	Mfr. Part No. VS-30TPS12LHM3 Mouser Part No 78-VS-30TPS12LHM3	Vishay Semiconductors	SCRs 20A If; 1200V Vr TO-247AD 3L Learn More about Vishay Semiconductors vishay aec q101 scr thyristors	Datasheet	6,621In Stock	$5.91 $3.43 $2.97 $2.49	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 33V 200W UNI-DIR SZSMF AEC-Q101 SZSMF33AT1G Littelfuse 1: $0.67 178,451In Stock	Mfr. Part No. SZSMF33AT1G Mouser Part No 863-SZSMF33AT1G	Littelfuse	ESD Protection Diodes / TVS Diodes 33V 200W UNI-DIR SZSMF AEC-Q101 Learn More about Littelfuse tvsdiodes	Datasheet	178,451In Stock	Cut Tape $0.67 $0.378 $0.301 $0.243 Reel $0.155 View $0.229 $0.142 $0.141 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors TG30-A90XSMD B88069X9991T203 TDK 1: $2.38 12,736In Stock	Mfr. Part No. B88069X9991T203 Mouser Part No 871-B88069X9991T203	TDK	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors TG30-A90XSMD	Datasheet	12,736In Stock	Cut Tape $2.38 $2.20 $1.82 $1.68 Reel $1.12 View $1.51 $1.39 $1.35 $1.09 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
ESD Protection Diodes / TVS Diodes 8-Line TVS Array Low Capacitance RCLAMP0508M.TBT Semtech 1: $4.15 34,156In Stock	Mfr. Part No. RCLAMP0508M.TBT Mouser Part No 947-RCLAMP0508M.TBT	Semtech	ESD Protection Diodes / TVS Diodes 8-Line TVS Array Low Capacitance Learn More about Semtech tvs esd suppressors	Datasheet	34,156In Stock	Cut Tape $4.15 $2.58 $2.11 $1.63 Reel $1.49 View $1.36 $1.33 MouseReel Available	Min.: 1 Mult.: 1 : 500
Thermal Cut-offs TCO, High Current, SMD, 72C, Self Hold AEC-Q200 SD72ABB Bourns 1: $2.84 3,469In Stock	Mfr. Part No. SD72ABB Mouser Part No 652-SD72ABB	Bourns	Thermal Cut-offs TCO, High Current, SMD, 72C, Self Hold AEC-Q200 Learn More about Bourns ad sd miniature tco devices	Datasheet	3,469In Stock	Cut Tape $2.84 $2.46 $1.99 $1.69 View Reel $1.24 $1.64 $1.39 $1.33 $1.24 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Circuit Breakers Single pole high performance thermal circuit breaker with tease-free, trip-free, snap action mechanism and push/pull on/off manual actuation (M-type TO CBE to EN 60934). An indicator band on the push button clearly shows the tripped/off position. Thr 413-K14-LN2-80A E-T-A 1: $88.14 354In Stock	Mfr. Part No. 413-K14-LN2-80A Mouser Part No 457-413-K14-LN2-80A	E-T-A	Circuit Breakers Single pole high performance thermal circuit breaker with tease-free, trip-free, snap action mechanism and push/pull on/off manual actuation (M-type TO CBE to EN 60934). An indicator band on the push button clearly shows the tripped/off position. Thr Learn More about E-T-A e t a 413 circuit breakers	Datasheet	354In Stock	$88.14 $74.67 $68.87 $56.98 Quote Quote	Min.: 1 Mult.: 1
Surface Mount Fuses 125VAC 1A .078ohms 453 NANO2 0453001.MR Littelfuse 1: $1.76 18,080In Stock	Mfr. Part No. 0453001.MR Mouser Part No 576-0453001.MR	Littelfuse	Surface Mount Fuses 125VAC 1A .078ohms 453 NANO2 Learn More about Littelfuse indoor led protection	Datasheet	18,080In Stock	Cut Tape $1.76 $1.39 $1.25 $1.13 View Reel $0.793 $1.04 $0.97 $0.793 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Surface Mount Fuses 20A 32V FAST ACTING 0501020.WRA Littelfuse 1: $1.39 23,009In Stock	Mfr. Part No. 0501020.WRA Mouser Part No 576-0501020.WRA	Littelfuse	Surface Mount Fuses 20A 32V FAST ACTING Learn More about Littelfuse 501a fast acting fuses	Datasheet	23,009In Stock	Cut Tape $1.39 $1.25 $1.13 $0.963 View Reel $0.552 $0.813 $0.783 $0.674 $0.621 $0.552 MouseReel Available	Min.: 1 Mult.: 1 : 3,000

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Circuit Protection

Types of Circuit Protection