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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.
NTC (Negative Temperature Coefficient) Thermistors 5k 3988 B57869S0502F140 TDK 1: $2.65 1,796In Stock	Mfr. Part No. B57869S0502F140 Mouser Part No 871-B57869S502F140	TDK	NTC (Negative Temperature Coefficient) Thermistors 5k 3988 Learn More about TDK epcos ntc thermistors	Datasheet	1,796In Stock	$2.65 $2.54 $2.40 $2.30 View $2.21 $2.11 $2.01 $1.82	Min.: 1 Mult.: 1
Varistors 50VAC 10% 7mm StandarD B72207S0500K111 TDK 1: $0.34 11,775In Stock	Mfr. Part No. B72207S0500K111 Mouser Part No 871-B72207S0500K111	TDK	Varistors 50VAC 10% 7mm StandarD Learn More about TDK epcosvaristors	Datasheet	11,775In Stock	Cut Tape $0.34 $0.207 $0.164 $0.156 Reel $0.146 View $0.146 $0.138 $0.132	Min.: 1 Mult.: 1 : 6,000
Varistors 385VAC 10% 14mm AdvanceD B72214S2381K101 TDK 1: $0.56 7,691In Stock	Mfr. Part No. B72214S2381K101 Mouser Part No 871-B72214S2381K101	TDK	Varistors 385VAC 10% 14mm AdvanceD Learn More about TDK epcosvaristors	Datasheet	7,691In Stock	$0.56 $0.351 $0.283 $0.27 View $0.259 $0.241 $0.229	Min.: 1 Mult.: 1
Varistors 250VAC 10% 14mm StandarD B72214S0251K101 TDK 1: $0.32 13,747In Stock	Mfr. Part No. B72214S0251K101 Mouser Part No 871-B72214S251K101	TDK	Varistors 250VAC 10% 14mm StandarD Learn More about TDK epcosvaristors	Datasheet	13,747In Stock	$0.32 $0.207 $0.172 $0.159 $0.158	Min.: 1 Mult.: 1
Varistors 300VAC 10% 14mm AdvanceD Thermofused B72214T2301K105 TDK 1: $1.83 2,066In Stock	Mfr. Part No. B72214T2301K105 Mouser Part No 871-B72214T2301K105	TDK	Varistors 300VAC 10% 14mm AdvanceD Thermofused Learn More about TDK epcos t varistor	Datasheet	2,066In Stock	$1.83 $1.23 $1.09 $1.03 View $0.986 $0.884 $0.84 $0.839	Min.: 1 Mult.: 1
Varistors 440VAC 10% 20mm StandarD B72220S0441K101 TDK 1: $0.66 3,898In Stock	Mfr. Part No. B72220S0441K101 Mouser Part No 871-B72220S0441K101	TDK	Varistors 440VAC 10% 20mm StandarD Learn More about TDK epcosvaristors	Datasheet	3,898In Stock	$0.66 $0.491 $0.442 $0.433	Min.: 1 Mult.: 1
Varistors 210VAC 10% 20mm AdvanceD B72220S2211K101 TDK 1: $1.04 4,123In Stock	Mfr. Part No. B72220S2211K101 Mouser Part No 871-B72220S2211K101	TDK	Varistors 210VAC 10% 20mm AdvanceD Learn More about TDK epcosvaristors	Datasheet	4,123In Stock	$1.04 $0.671 $0.549 $0.53 View $0.473 $0.472	Min.: 1 Mult.: 1
Varistors 95VAC 10% 20mm StandarD B72220S0950K101 TDK 1: $1.02 9,455In Stock	Mfr. Part No. B72220S0950K101 Mouser Part No 871-B72220S950K101	TDK	Varistors 95VAC 10% 20mm StandarD Learn More about TDK epcosvaristors	Datasheet	9,455In Stock	$1.02 $0.664 $0.547 $0.524 View $0.487 $0.474 $0.43 $0.422	Min.: 1 Mult.: 1
Varistors 10mm, 680Vac, 10%, Compact Series B72310S0681K101 TDK 1: $0.67 8,131In Stock	Mfr. Part No. B72310S0681K101 Mouser Part No 871-B72310S0681K101	TDK	Varistors 10mm, 680Vac, 10%, Compact Series Learn More about TDK epcos s14 s10 s07 varistors	Datasheet	8,131In Stock	$0.67 $0.428 $0.348 $0.333 View $0.32 $0.303 $0.292 $0.261 $0.259	Min.: 1 Mult.: 1
Varistors 14mm, 350Vac, 10%, AdvanceD Compact Series B72314S2351K101 TDK 1: $0.52 7,511In Stock	Mfr. Part No. B72314S2351K101 Mouser Part No 871-B72314S2351K101	TDK	Varistors 14mm, 350Vac, 10%, AdvanceD Compact Series Learn More about TDK epcos s14 s10 s07 varistors	Datasheet	7,511In Stock	$0.52 $0.325 $0.262 $0.25 View $0.24 $0.218	Min.: 1 Mult.: 1
Varistors 0603 15Vdc 30A B72500D150A60 TDK 1: $0.11 62,913In Stock	Mfr. Part No. B72500D150A60 Mouser Part No 871-B72500D150A60	TDK	Varistors 0603 15Vdc 30A Learn More about TDK epcosvaristors	Datasheet	62,913In Stock	Cut Tape $0.11 $0.063 $0.058 $0.056 Reel $0.054 View $0.055 $0.053 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Varistors 0603 4.0V 30A B72500T0040M060 TDK 1: $0.26 45,840In Stock	Mfr. Part No. B72500T0040M060 Mouser Part No 871-B72500T40M60	TDK	Varistors 0603 4.0V 30A Learn More about TDK epcosvaristors	Datasheet	45,840In Stock	Cut Tape $0.26 $0.159 $0.126 $0.119 Reel $0.097 View $0.114 $0.091 $0.09 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Varistors 1210 24VDC 8000pF 2000A B72530T6170K062 TDK 1: $1.20 9,647In Stock	Mfr. Part No. B72530T6170K062 Mouser Part No 871-B72530T6170K062	TDK	Varistors 1210 24VDC 8000pF 2000A Learn More about TDK ctvs varistors	Datasheet	9,647In Stock	Cut Tape $1.20 $0.781 $0.646 $0.62 Reel $0.571 View $0.588 $0.554 $0.544 MouseReel Available	Min.: 1 Mult.: 1 : 1,500
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3.6kV 20% 3kA EHV62-H36B2 B88069X1693B252 TDK 1: $3.49 1,029In Stock	Mfr. Part No. B88069X1693B252 Mouser Part No 871-B88069X1693B252	TDK	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3.6kV 20% 3kA EHV62-H36B2	Datasheet	1,029In Stock	$3.49 $3.22 $2.67 $2.47 View $2.21 $2.03 $1.89 $1.83 $1.58	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors A71-H25X B88069X2190T502 TDK 1: $2.62 1,578In Stock	Mfr. Part No. B88069X2190T502 Mouser Part No 871-B88069X2190T502	TDK	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors A71-H25X	Datasheet	1,578In Stock	Cut Tape $2.62 $2.41 $2.00 $1.85 Reel $1.52 View $1.66 $1.34 $1.21	Min.: 1 Mult.: 1 : 500
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors T23-A230XF4 B88069X8750B502 TDK 1: $2.38 956In Stock	Mfr. Part No. B88069X8750B502 Mouser Part No 871-B88069X8750B502	TDK	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors T23-A230XF4	Datasheet	956In Stock	$2.38 $2.21 $1.93 $1.81 View $1.70 $1.57 $1.46	Min.: 1 Mult.: 1
Circuit Breakers Cir Brkr,HydMag IAGN66-1-72-30.0 AIRPAX 1: $137.89 24In Stock	Mfr. Part No. IAGN66-1-72-30.0 Mouser Part No 874-IAGN6617230	AIRPAX	Circuit Breakers Cir Brkr,HydMag	Datasheet	24In Stock	$137.89 $125.47 $87.17 $76.60 View $63.40 Quote	Min.: 1 Mult.: 1
Circuit Breakers MSP,GROUP TAP,S00,CL10,4.5-6.3A,SCREW 3RV10111GA10 Siemens 1: $334.72 5In Stock	Mfr. Part No. 3RV10111GA10 Mouser Part No 982-3RV10111GA10	Siemens	Circuit Breakers MSP,GROUP TAP,S00,CL10,4.5-6.3A,SCREW Learn More about Siemens 3rv1 motor starter protectors	Datasheet	5In Stock	$334.72 $324.72	Min.: 1 Mult.: 1
Circuit Breakers MSP S0 3.5 - 5A SCREW 3RV20211FA10 Siemens 1: $295.18 29In Stock	Mfr. Part No. 3RV20211FA10 Mouser Part No 982-3RV20211FA10	Siemens	Circuit Breakers MSP S0 3.5 - 5A SCREW Learn More about Siemens 3rv2 circuit breakers	Datasheet	29In Stock	$295.18 $243.79 $226.70 $186.99	Min.: 1 Mult.: 1
Circuit Breakers MSP S0 23-28A SCREW 3RV20214NA10 Siemens 1: $503.16 12In Stock	Mfr. Part No. 3RV20214NA10 Mouser Part No 982-3RV20214NA10	Siemens	Circuit Breakers MSP S0 23-28A SCREW Learn More about Siemens 3rv2 circuit breakers	Datasheet	12In Stock	$503.16 $416.78 $384.07 View Quote	Min.: 1 Mult.: 1
Circuit Breakers MSP S2 CLASS 20 22-32A SCREW 3RV20314EB10 Siemens 1: $634.41 5In Stock	Mfr. Part No. 3RV20314EB10 Mouser Part No 982-3RV20314EB10	Siemens	Circuit Breakers MSP S2 CLASS 20 22-32A SCREW Learn More about Siemens 3rv2 circuit breakers	Datasheet	5In Stock	$634.41 $541.82 $484.16 View Quote	Min.: 1 Mult.: 1
Circuit Breakers SUP PTOR 5SY4 1P 240V 6A 7.5K B-TRIP 5SY41066 Siemens 1: $66.70 44In Stock	Mfr. Part No. 5SY41066 Mouser Part No 982-5SY41066	Siemens	Circuit Breakers SUP PTOR 5SY4 1P 240V 6A 7.5K B-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	44In Stock	$66.70 $58.07 $55.86 $54.99 View $44.14 Quote	Min.: 1 Mult.: 1
Circuit Breakers SUP PTOR 5SY4 1P 240V 15A 7.5K C-TRIP 5SY41187 Siemens 1: $67.06 32In Stock	Mfr. Part No. 5SY41187 Mouser Part No 982-5SY41187	Siemens	Circuit Breakers SUP PTOR 5SY4 1P 240V 15A 7.5K C-TRIP Learn More about Siemens 5sy4 mini circuit breakers	Datasheet	32In Stock	$67.06 $56.71 $53.43 $47.60 View $43.83 $41.94 Quote	Min.: 1 Mult.: 1
Circuit Breakers MAN-START 600VAC 40AMP IEC GV3P25 Schneider Electric 1: $398.52 6In Stock	Mfr. Part No. GV3P25 Mouser Part No 996-GV3P25	Schneider Electric	Circuit Breakers MAN-START 600VAC 40AMP IEC Learn More about Schneider Electric schneider gv3 manual starters protectors	Datasheet	6In Stock	$398.52	Min.: 1 Mult.: 1
Fuse Holder Accessories ZCase Box Cover 873-716 Littelfuse 1: $7.97 93In Stock	Mfr. Part No. 873-716 Mouser Part No 576-873-716	Littelfuse	Fuse Holder Accessories ZCase Box Cover		93In Stock	$7.97 $7.08 $6.76 $5.20 View $4.29 $3.97 $3.78 $3.68	Min.: 1 Mult.: 1

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Circuit Protection

Types of Circuit Protection