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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.
Inrush Current Limiters S 237/1 M B57237S0109M000 TDK 1: $1.26 4,643In Stock	Mfr. Part No. B57237S0109M000 Mouser Part No 871-B57237S0109M000	TDK	Inrush Current Limiters S 237/1 M Learn More about TDK epcos inrush current limiters	Datasheet	4,643In Stock	$1.26 $1.16 $0.963 $0.889 View $0.799 $0.734 $0.648 $0.585 $0.56	Min.: 1 Mult.: 1
Inrush Current Limiters S 237/7 M51 B57237S0709M051 TDK 1: $1.30 2,291In Stock	Mfr. Part No. B57237S0709M051 Mouser Part No 871-B57237S0709M051	TDK	Inrush Current Limiters S 237/7 M51 Learn More about TDK epcos inrush current limiters	Datasheet	2,291In Stock	Cut Tape $1.30 $1.20 $0.99 $0.914 Reel $0.612 View $0.821 $0.757 $0.698 $0.575	Min.: 1 Mult.: 1 : 2,000
Inrush Current Limiters 10 Ohms 3.7amps 3060k B57237S0100M054 TDK 1: $1.53 16,402In Stock	Mfr. Part No. B57237S0100M054 Mouser Part No 871-B57237S100M54	TDK	Inrush Current Limiters 10 Ohms 3.7amps 3060k Learn More about TDK epcos inrush current limiters	Datasheet	16,402In Stock	$1.53 $1.40 $1.17 $1.08 Reel $0.743 View $0.968 $0.84 $0.731 $0.674	Min.: 1 Mult.: 1 : 1,500
NTC (Negative Temperature Coefficient) Thermistors 10k 4000 3% B57321V2103J60 TDK 1: $0.26 85,989In Stock	Mfr. Part No. B57321V2103J60 Mouser Part No 871-B57321V2103J60	TDK	NTC (Negative Temperature Coefficient) Thermistors 10k 4000 3% Learn More about TDK b573xv2 ntc thermistors	Datasheet	85,989In Stock	Cut Tape $0.26 $0.204 $0.179 $0.141 View Reel $0.096 $0.121 $0.115 $0.096 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Varistors 11VAC 10% 10mm StandarD B72210S0110K101 TDK 1: $0.41 13,309In Stock	Mfr. Part No. B72210S0110K101 Mouser Part No 871-B72210S110K101	TDK	Varistors 11VAC 10% 10mm StandarD Learn More about TDK epcosvaristors	Datasheet	13,309In Stock	$0.41 $0.254 $0.203 $0.193 View $0.185 $0.176 $0.174 $0.166	Min.: 1 Mult.: 1
Varistors 550VAC 10% 14mm MP AdvanceD B72214P2551K101 TDK 1: $1.26 3,187In Stock	Mfr. Part No. B72214P2551K101 Mouser Part No 871-B72214P2551K101	TDK	Varistors 550VAC 10% 14mm MP AdvanceD	Datasheet	3,187In Stock	$1.26 $0.633 $0.543 $0.517 View $0.512 $0.511	Min.: 1 Mult.: 1
Varistors 20VAC 10% 20mm StandarD B72220S0200K131 TDK 1: $1.10 4,078In Stock	Mfr. Part No. B72220S0200K131 Mouser Part No 871-B72220S0200K131	TDK	Varistors 20VAC 10% 20mm StandarD Learn More about TDK epcosvaristors	Datasheet	4,078In Stock	Cut Tape $1.10 $0.718 $0.592 $0.568 Reel $0.52 View $0.538 $0.439	Min.: 1 Mult.: 1 : 1,500
Varistors 25Vrms 5A B72500E8250L060 TDK 1: $0.30 106,519In Stock	Mfr. Part No. B72500E8250L060 Mouser Part No 871-B72500E8250L060	TDK	Varistors 25Vrms 5A Learn More about TDK epcos e MLV auto	Datasheet	106,519In Stock	Cut Tape $0.30 $0.185 $0.147 $0.139 Reel $0.117 View $0.133 $0.113 $0.112 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Varistors 1210 20V 400A 1500pF B72530T0200K062 TDK 1: $0.69 21,559In Stock	Mfr. Part No. B72530T0200K062 Mouser Part No 871-B72530T200K62	TDK	Varistors 1210 20V 400A 1500pF Learn More about TDK epcosvaristors	Datasheet	21,559In Stock	Cut Tape $0.69 $0.442 $0.36 $0.344 Reel $0.294 View $0.33 $0.275 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Varistors 0402 14V RMS 20A B72590T0140L060 TDK 1: $0.18 66,920In Stock	Mfr. Part No. B72590T0140L060 Mouser Part No 871-B72590T140L60	TDK	Varistors 0402 14V RMS 20A Learn More about TDK epcosvaristors	Datasheet	66,920In Stock	Cut Tape $0.18 $0.105 $0.082 $0.077 View Reel $0.07 $0.073 $0.071 $0.07 $0.07	Min.: 1 Mult.: 1 : 10,000
Varistors 35VAC 10% 3225mm B72650M0350K072 TDK 1: $0.84 3,905In Stock	Mfr. Part No. B72650M0350K072 Mouser Part No 871-B72650M0350K072	TDK	Varistors 35VAC 10% 3225mm Learn More about TDK epcosvaristors	Datasheet	3,905In Stock	Cut Tape $0.84 $0.537 $0.44 $0.421 Reel $0.376 View $0.397 $0.369 MouseReel Available	Min.: 1 Mult.: 1 : 2,000
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 4.5kV 20% 3kA EHV63-H45B2 B88069X2643B252 TDK 1: $3.49 1,101In Stock	Mfr. Part No. B88069X2643B252 Mouser Part No 871-B88069X2643B252	TDK	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 4.5kV 20% 3kA EHV63-H45B2	Datasheet	1,101In Stock	$3.49 $3.22 $2.67 $2.47 View $2.21 $2.03 $1.88 $1.75 $1.67	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors T83-A500XF4 B88069X3771B502 TDK 1: $2.91 1,079In Stock	Mfr. Part No. B88069X3771B502 Mouser Part No 871-B88069X3771B502	TDK	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors T83-A500XF4	Datasheet	1,079In Stock	$2.91 $2.69 $2.23 $2.06 View $1.85 $1.69 $1.48 $1.37	Min.: 1 Mult.: 1
Circuit Breakers Cir Brkr Hyd Mag CPP11-52-15.0A-OC-V AIRPAX 1: $21.32 63In Stock	Mfr. Part No. CPP11-52-15.0A-OC-V Mouser Part No 874-CPP1152150AOCV	AIRPAX	Circuit Breakers Cir Brkr Hyd Mag Learn More about AIRPAX sensata snapak circuit protectors	Datasheet	63In Stock	$21.32 $20.94 $20.28 $19.22 View $18.43 $17.76 $16.31 Quote	Min.: 1 Mult.: 1
Circuit Breakers MSP S0 9 - 12.5A SCREW 3RV20211KA10 Siemens 1: $327.41 9In Stock	Mfr. Part No. 3RV20211KA10 Mouser Part No 982-3RV20211KA10	Siemens	Circuit Breakers MSP S0 9 - 12.5A SCREW Learn More about Siemens 3rv2 circuit breakers	Datasheet	9In Stock	$327.41 $271.30 $250.11 $222.33 View Quote	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes TVS, bidirectional, VRWM 24V, 5KW, SMC 5KMC24CAS-AU_R1_000A1 Panjit 1: $3.03 2,400In Stock	Mfr. Part No. 5KMC24CAS-AU_R1_000A1 Mouser Part No 241-5KMC24CAS-AU	Panjit	ESD Protection Diodes / TVS Diodes TVS, bidirectional, VRWM 24V, 5KW, SMC Learn More about Panjit 5kmc tvs diodes	Datasheet	2,400In Stock	Cut Tape $3.03 $1.96 $1.59 $1.34 $0.812 Reel $0.811 MouseReel Available	Min.: 1 Mult.: 1 : 800
ESD Protection Diodes / TVS Diodes TVS, unidirectional, VRWM 64V, 5KW, SMC 5KMC64AS_R1_00001 Panjit 1: $2.58 2,134In Stock	Mfr. Part No. 5KMC64AS_R1_00001 Mouser Part No 241-5KMC64AS	Panjit	ESD Protection Diodes / TVS Diodes TVS, unidirectional, VRWM 64V, 5KW, SMC Learn More about Panjit 5kmc tvs diodes	Datasheet	2,134In Stock	Cut Tape $2.58 $1.66 $1.34 $1.13 Reel $0.73 View $0.731 $0.684 MouseReel Available	Min.: 1 Mult.: 1 : 800
Triacs 35 Amp Standard High Temperature Alternistor TRIAC-TO263 QJ8035NH4RP Littelfuse 1: $8.69 923In Stock	Mfr. Part No. QJ8035NH4RP Mouser Part No 576-QJ8035NH4RP	Littelfuse	Triacs 35 Amp Standard High Temperature Alternistor TRIAC-TO263 Learn More about Littelfuse qjxx35xh4 alternistor triacs	Datasheet	923In Stock	Cut Tape $8.69 $5.92 $4.39 Reel $4.16 MouseReel Available	Min.: 1 Mult.: 1 : 500
Triacs 12 Amp High Temperature High dvdt TRIAC-TO220AB QV6012RH5TP Littelfuse 1: $4.71 999In Stock	Mfr. Part No. QV6012RH5TP Mouser Part No 576-QV6012RH5TP	Littelfuse	Triacs 12 Amp High Temperature High dvdt TRIAC-TO220AB Learn More about Littelfuse qvxx12xhx high temp triacs	Datasheet	999In Stock	$4.71 $3.11 $2.20 $1.82	Min.: 1 Mult.: 1
Circuit Breakers CAPAROC E2 12-24DC/2-10A EX 1344364 Phoenix Contact 1: $94.29 43In Stock	Mfr. Part No. 1344364 Mouser Part No 651-1344364	Phoenix Contact	Circuit Breakers CAPAROC E2 12-24DC/2-10A EX Learn More about Phoenix Contact caparoc circuit breaker system	Datasheet	43In Stock	$94.29	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors NextGen HV GDT 8 mm 1100 V GDT28H-110-BRP Bourns 1: $1.81 1,456In Stock	Mfr. Part No. GDT28H-110-BRP Mouser Part No 652-GDT28H-110-BRP	Bourns	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors NextGen HV GDT 8 mm 1100 V Learn More about Bourns gdt28h gdts	Datasheet	1,456In Stock	Cut Tape $1.81 $1.67 $1.39 $1.28 Reel $0.927 View $1.15 $1.04 $0.853 $0.812 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Surface Mount Fuses 0402 fast-acting thin film 4A SF-0402FR400-2 Bourns 1: $0.43 8,042In Stock	Mfr. Part No. SF-0402FR400-2 Mouser Part No 652-SF-0402FR400-2	Bourns	Surface Mount Fuses 0402 fast-acting thin film 4A Learn More about Bourns singlfuse sf 0402fr smd fuses		8,042In Stock	Cut Tape $0.43 $0.304 $0.268 $0.24 View Reel $0.233 $0.234 $0.233 $0.233 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Triacs 12 Amp High Temperature High dvdt TRIAC-TO263 QV6012NH5TP Littelfuse 1: $5.31 1,100In Stock	Mfr. Part No. QV6012NH5TP Mouser Part No 576-QV6012NH5TP	Littelfuse	Triacs 12 Amp High Temperature High dvdt TRIAC-TO263 Learn More about Littelfuse qvxx12xhx high temp triacs	Datasheet	1,100In Stock	$5.31 $3.53 $2.52 $2.13	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

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Circuit Protection

Types of Circuit Protection