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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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Types of Circuit Protection

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (JPY) Filter the results in the table by unit price based on your quantity.	Qty.
Circuit Breakers MSP S0 27-32A AUX 1NO 1NC SCREW 3RV20214EA15 Siemens 1: ¥92,135.7 7In Stock	Mfr. Part # 3RV20214EA15 Mouser Part # 982-3RV20214EA15	Siemens	Circuit Breakers MSP S0 27-32A AUX 1NO 1NC SCREW Learn More about Siemens 3rv2 circuit breakers	Datasheet	7In Stock	¥92,135.7 ¥76,776.4 ¥70,740.3	Min.: 1 Mult.: 1
Circuit Breakers MSP S2 CLASS 10 42-52A SCREW 3RV20314WA10 Siemens 1: ¥109,227.4 7In Stock	Mfr. Part # 3RV20314WA10 Mouser Part # 982-3RV20314WA10	Siemens	Circuit Breakers MSP S2 CLASS 10 42-52A SCREW Learn More about Siemens 3rv2 circuit breakers	Datasheet	7In Stock	¥109,227.4 ¥96,434.3 ¥83,329	Min.: 1 Mult.: 1
Triacs 12 Amp High Temperature High dvdt TRIAC-TO263 QV6012NH5TP Littelfuse 1: ¥882 1,100In Stock	Mfr. Part # QV6012NH5TP Mouser Part # 576-QV6012NH5TP	Littelfuse	Triacs 12 Amp High Temperature High dvdt TRIAC-TO263 Learn More about Littelfuse qvxx12xhx high temp triacs	Datasheet	1,100In Stock	¥882 ¥586.3 ¥418.6 ¥348.8	Min.: 1 Mult.: 1
Triacs 25 Amp High Temperature High dvdt TRIAC-TO263 QV6025NH5TP Littelfuse 1: ¥1,453.4 996In Stock	Mfr. Part # QV6025NH5TP Mouser Part # 576-QV6025NH5TP	Littelfuse	Triacs 25 Amp High Temperature High dvdt TRIAC-TO263 Learn More about Littelfuse qvxx25xhx alternistor triacs	Datasheet	996In Stock	¥1,453.4 ¥792.3 ¥727.5 ¥679.3	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 1.5KW,91V 5%,UNIDIR,SMC TVS 1.5SMC91AHE3_A/I Vishay Semiconductors 1: ¥232.5 3,734In Stock	Mfr. Part # 1.5SMC91AHE3_A/I Mouser Part # 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 ¥232.5 ¥145.3 ¥95.3 ¥70.1 Reel ¥53.5 View ¥63.8 ¥48.3 ¥40.7	Min.: 1 Mult.: 1 : 3,500
ESD Protection Diodes / TVS Diodes ESD 24V UNI TA6L24AHM3/H Vishay Semiconductors 1: ¥98 5,940In Stock	Mfr. Part # TA6L24AHM3/H Mouser Part # 78-TA6L24AHM3/H	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes ESD 24V UNI	Datasheet	5,940In Stock	Cut Tape ¥98 ¥58 ¥44.7 ¥35.9 Reel ¥30.4 View ¥34.5 ¥29.9 ¥27.6	Min.: 1 Mult.: 1 : 3,500
ESD Protection Diodes / TVS Diodes 4-LINE 3.3V 0.3PF ESD RCLAMP03354P.N Semtech 1: ¥240.8 44,345In Stock NRND	Mfr. Part # RCLAMP03354P.N Mouser Part # 947-RCLAMP03354P.N NRND	Semtech	ESD Protection Diodes / TVS Diodes 4-LINE 3.3V 0.3PF ESD Learn More about Semtech hdmi esd protection	Datasheet	44,345In Stock	Cut Tape ¥240.8 ¥151.6 ¥112.8 ¥100.3 View Reel ¥52.2 ¥78.2 ¥68.9 ¥65.6 ¥59.8 ¥52.2 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
ESD Protection Diodes / TVS Diodes TVS, bidirectional, VRWM 24V, 5KW, SMC 5KMC24CAS-AU_R1_000A1 Panjit 1: ¥503.3 2,400In Stock	Mfr. Part # 5KMC24CAS-AU_R1_000A1 Mouser Part # 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 ¥503.3 ¥325.6 ¥264.1 ¥222.6 Reel ¥134.7 View ¥134.9 ¥130.7 ¥127.7 MouseReel Available	Min.: 1 Mult.: 1 : 800
ESD Protection Diodes / TVS Diodes TVS, unidirectional, VRWM 64V, 5KW, SMC 5KMC64AS_R1_00001 Panjit 1: ¥428.5 2,134In Stock	Mfr. Part # 5KMC64AS_R1_00001 Mouser Part # 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 ¥428.5 ¥275.7 ¥222.6 ¥187.7 Reel ¥121.3 View ¥121.4 ¥110 ¥107.5 MouseReel Available	Min.: 1 Mult.: 1 : 800
Cartridge Fuses Barrier circuit fuse for use in intrinsic safety, 40mA 0AMA-0040-TD Bel Fuse 1: ¥1,458.4 872In Stock	Mfr. Part # 0AMA-0040-TD Mouser Part # 530-0AMA-0040-TD	Bel Fuse	Cartridge Fuses Barrier circuit fuse for use in intrinsic safety, 40mA Learn More about Bel Fuse bel 0ama fast acting fuses	Datasheet	872In Stock	Cut Tape ¥1,458.4 ¥1,210.9 ¥1,116.2 ¥926.8 Reel ¥641.1 View ¥853.8 ¥677.7 ¥614.6 ¥588	Min.: 1 Mult.: 1 : 500
Triacs 35 Amp Standard High Temperature Alternistor TRIAC-TO263 QJ8035NH4RP Littelfuse 1: ¥1,443.4 923In Stock	Mfr. Part # QJ8035NH4RP Mouser Part # 576-QJ8035NH4RP	Littelfuse	Triacs 35 Amp Standard High Temperature Alternistor TRIAC-TO263 Learn More about Littelfuse qjxx35xh4 alternistor triacs	Datasheet	923In Stock	Cut Tape ¥1,443.4 ¥983.3 ¥729.2 Reel ¥691 ¥682.7 MouseReel Available	Min.: 1 Mult.: 1 : 500
Triacs 12 Amp High Temperature High dvdt TRIAC-TO220AB QV6012RH5TP Littelfuse 1: ¥782.3 999In Stock	Mfr. Part # QV6012RH5TP Mouser Part # 576-QV6012RH5TP	Littelfuse	Triacs 12 Amp High Temperature High dvdt TRIAC-TO220AB Learn More about Littelfuse qvxx12xhx high temp triacs	Datasheet	999In Stock	¥782.3 ¥516.6 ¥365.4 ¥302.3 ¥297.3	Min.: 1 Mult.: 1
Triacs 25 Amp High Temperature High dvdt TRIAC-TO220AB QV6025RH5TP Littelfuse 1: ¥1,496.6 1,077In Stock	Mfr. Part # QV6025RH5TP Mouser Part # 576-QV6025RH5TP	Littelfuse	Triacs 25 Amp High Temperature High dvdt TRIAC-TO220AB Learn More about Littelfuse qvxx25xhx alternistor triacs	Datasheet	1,077In Stock	¥1,496.6 ¥1,021.5 ¥752.4 ¥707.6	Min.: 1 Mult.: 1
Circuit Breakers CAPAROC E2 12-24DC/2-10A EX 1344364 Phoenix Contact 1: ¥15,661.6 43In Stock	Mfr. Part # 1344364 Mouser Part # 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	¥15,661.6	Min.: 1 Mult.: 1
Surface Mount Fuses 0402 fast-acting thin film 4A SF-0402FR400-2 Bourns 1: ¥122.9 8,042In Stock	Mfr. Part # SF-0402FR400-2 Mouser Part # 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 ¥122.9 ¥97.8 ¥82.4 ¥72.3 View Reel ¥45.8 ¥65.1 ¥60 ¥55.3 ¥51 ¥45.8 ¥45.8 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
Triacs 25 Amp High Temperature High dvdt TRIAC-TO263 QV8025NH4TP Littelfuse 1: ¥1,461.7 984In Stock	Mfr. Part # QV8025NH4TP Mouser Part # 576-QV8025NH4TP	Littelfuse	Triacs 25 Amp High Temperature High dvdt TRIAC-TO263 Learn More about Littelfuse qvxx25xhx alternistor triacs	Datasheet	984In Stock	¥1,461.7 ¥996.6 ¥732.5 ¥684.3	Min.: 1 Mult.: 1
Triacs 25 Amp High Temperature High dvdt TRIAC-TO220AB QV8025RH5TP Littelfuse 1: ¥1,504.9 989In Stock	Mfr. Part # QV8025RH5TP Mouser Part # 576-QV8025RH5TP	Littelfuse	Triacs 25 Amp High Temperature High dvdt TRIAC-TO220AB Learn More about Littelfuse qvxx25xhx alternistor triacs	Datasheet	989In Stock	¥1,504.9 ¥1,028.2 ¥757.4 ¥712.6	Min.: 1 Mult.: 1
NTC Thermistors NTC Ni 0.4 lead 100K 2% NTCLE203E3104GB0A Vishay / BC Components 1: ¥159.5 1,524In Stock	Mfr. Part # NTCLE203E3104GB0A Mouser Part # 594-NTCL203E3104GB0A	Vishay / BC Components	NTC Thermistors NTC Ni 0.4 lead 100K 2% Learn More about Vishay / BC Components vishay bc ntcle100e3 ntcle203e3 ntc thermistors	Datasheet	1,524In Stock	¥159.5 ¥151.3 ¥141.8 ¥135.4 View ¥129.6 ¥116.3 ¥110.3 ¥99.3	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: ¥206 3,192In Stock	Mfr. Part # T15B22AHM3/I Mouser Part # 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 ¥206 ¥95.3 ¥84.5 ¥65.4 Reel ¥57.8 View ¥63 ¥49.5 ¥49.3 ¥41.7	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: ¥182.7 1,537In Stock	Mfr. Part # GDT25-42-S1-RP Mouser Part # 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 ¥182.7 ¥167.8 ¥138.9 ¥128.2 Reel ¥91.7 View ¥115.3 ¥106.3 ¥89.9 MouseReel Available	Min.: 1 Mult.: 1 : 1,500
Fuse Holder 5 x 20mm SNAP FIT PANEL 2.0-3.0mm FX0458/2 Bulgin 1: ¥1,480 399In Stock	Mfr. Part # FX0458/2 Mouser Part # 422-FX0458/2	Bulgin	Fuse Holder 5 x 20mm SNAP FIT PANEL 2.0-3.0mm	Datasheet	399In Stock	¥1,480 ¥1,227.5 ¥1,132.8 ¥642.8 ¥641.1	Min.: 1 Mult.: 1
Circuit Breakers Miniaturised double pole thermal circuit breaker with push-to-reset tease-free, trip-free, snap action mechanism (R-type TO CBE to EN 60934). Threadneck panel mounting. Suitable for line and neutral switching - the thermal actuator op 1140-G151-P7M1-15A E-T-A 1: ¥5,791.9 65In Stock	Mfr. Part # 1140-G151-P7M1-15A Mouser Part # 457-1140G151P7M115A	E-T-A	Circuit Breakers Miniaturised double pole thermal circuit breaker with push-to-reset tease-free, trip-free, snap action mechanism (R-type TO CBE to EN 60934). Threadneck panel mounting. Suitable for line and neutral switching - the thermal actuator op	Datasheet	65In Stock	¥5,791.9 ¥4,973 ¥4,604.3 ¥4,074.4 View ¥3,719 ¥3,335.3 ¥3,260.5 Quote	Min.: 1 Mult.: 1
Circuit Breakers Single, two and three pole rocker switch/thermal trip free circuit breakers (S-type TO CBE to EN 60934) of compact design for snap-in panel mounting. Available either with protection on one/both/all poles or, in the case of the double 3130-F120-P7T1-W14QR6-12A E-T-A 1: ¥8,748.5 190In Stock	Mfr. Part # 3130-F120-P7T1-W14QR6-12A Mouser Part # 457-120P7T1W14QR612A	E-T-A	Circuit Breakers Single, two and three pole rocker switch/thermal trip free circuit breakers (S-type TO CBE to EN 60934) of compact design for snap-in panel mounting. Available either with protection on one/both/all poles or, in the case of the double	Datasheet	190In Stock	¥8,748.5 ¥7,815 ¥6,856.6 ¥6,298.5 View ¥5,976.3 ¥5,938.1 Quote	Min.: 1 Mult.: 1
Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot 3120-N321-P7T1-W01D-3A E-T-A 1: ¥5,680.6 171In Stock	Mfr. Part # 3120-N321-P7T1-W01D-3A Mouser Part # 457-N321P7T1W01D3	E-T-A	Circuit Breakers The 3120-N thermal circuit breaker/switch combination unites overcurrent protection and the function of an ON/OFF switch within a single component. The trip element is a thermal bimetal. Type 3120-N is ideally suited for overload prot Learn More about E-T-A e t a 3120 n thermal circuit breakers	Datasheet	171In Stock	¥5,680.6 ¥4,713.9 ¥4,346.8 ¥3,601 View ¥3,318.7 ¥2,974.9 ¥2,787.2	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes TVS array 6 line Uni-dir, 300W (8/20us), Stand-off voltage = 3.3V SMDA03-6e3/TR7 Microchip Technology 1: ¥215.9 1,237In Stock	Mfr. Part # SMDA03-6e3/TR7 Mouser Part # 494-SMDA03-6E3/TR7	Microchip Technology	ESD Protection Diodes / TVS Diodes TVS array 6 line Uni-dir, 300W (8/20us), Stand-off voltage = 3.3V Learn More about Microchip Technology microchip high reliability	Datasheet	1,237In Stock	Cut Tape ¥215.9 Reel ¥181 MouseReel Available	Min.: 1 Mult.: 1 : 500

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Circuit Protection

Types of Circuit Protection