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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,GROUP TAP,S00,CL10,1.1-1.6A,SCREW 3RV10111AA10 Siemens 1: ¥65,244.1 10In Stock	Mfr. Part # 3RV10111AA10 Mouser Part # 982-3RV10111AA10	Siemens	Circuit Breakers MSP,GROUP TAP,S00,CL10,1.1-1.6A,SCREW Learn More about Siemens 3rv1 motor starter protectors	Datasheet	10In Stock	¥65,244.1 ¥54,223.3 ¥49,301.8 View Quote	Min.: 1 Mult.: 1
Circuit Breakers MSP S00 0.7-1A SPRING 3RV20110JA20 Siemens 1: ¥43,127.9 8In Stock	Mfr. Part # 3RV20110JA20 Mouser Part # 982-3RV20110JA20	Siemens	Circuit Breakers MSP S00 0.7-1A SPRING Learn More about Siemens 3rv2 circuit breakers	Datasheet	8In Stock	¥43,127.9 ¥35,753 ¥32,080.6 ¥27,260.3 View Quote	Min.: 1 Mult.: 1
Circuit Breakers MSP S0 11-16A SCREW W/AUX 1NO/1NC 3RV20214AA15 Siemens 1: ¥66,395.2 6In Stock	Mfr. Part # 3RV20214AA15 Mouser Part # 982-3RV20214AA15	Siemens	Circuit Breakers MSP S0 11-16A SCREW W/AUX 1NO/1NC Learn More about Siemens 3rv2 circuit breakers	Datasheet	6In Stock	¥66,395.2 ¥55,193.4 ¥50,874.8	Min.: 1 Mult.: 1
Circuit Breakers MSP S0 34-40A SCREW 3RV20214FA10 Siemens 1: ¥105,624.7 4In Stock	Mfr. Part # 3RV20214FA10 Mouser Part # 982-3RV20214FA10	Siemens	Circuit Breakers MSP S0 34-40A SCREW Learn More about Siemens 3rv2 circuit breakers	Datasheet	4In Stock	¥105,624.7 ¥87,503.1 ¥80,616.6	Min.: 1 Mult.: 1
Circuit Breakers MSP S2 CLASS 10 28-36A SCREW 3RV20314PA10 Siemens 1: ¥91,165.6 6In Stock	Mfr. Part # 3RV20314PA10 Mouser Part # 982-3RV20314PA10	Siemens	Circuit Breakers MSP S2 CLASS 10 28-36A SCREW Learn More about Siemens 3rv2 circuit breakers	Datasheet	6In Stock	¥91,165.6 ¥76,447.5 ¥70,436.4	Min.: 1 Mult.: 1
Circuit Breaker Accessories BRKR 3VA HNDL FOR MAX-FLEX N3R STL RB 3VA99770CH72 Siemens 1: ¥153,914.9 3In Stock 3Expected 12/4/2026	Mfr. Part # 3VA99770CH72 Mouser Part # 982-3VA99770CH72	Siemens	Circuit Breaker Accessories BRKR 3VA HNDL FOR MAX-FLEX N3R STL RB Learn More about Siemens 3va molded case circuit breakers	Datasheet	3In Stock 3Expected 12/4/2026	¥153,914.9	Min.: 1 Mult.: 1
Fuse Holder 5x20 FUSEHOLDER W/P FX0385/BK Bulgin 1: ¥2,659.3 561In Stock	Mfr. Part # FX0385/BK Mouser Part # 167-FX0385/BK	Bulgin	Fuse Holder 5x20 FUSEHOLDER W/P	Datasheet	561In Stock	¥2,659.3 ¥2,119.4 ¥1,983.2 ¥1,657.7 View ¥1,398.6 ¥1,285.6 ¥1,182.6 ¥1,167.7	Min.: 1 Mult.: 1
Circuit Breakers Miniaturised single pole thermal circuit breaker with push-to-reset tease free, trip-free, snap action mechanism (R-type TO CBE to EN 60934) integral type. Approved to CBE standard EN 60934 (IEC 60934). For higher current ratings see 104-P10-4A E-T-A 1: ¥3,755.5 297In Stock	Mfr. Part # 104-P10-4A Mouser Part # 457-104-P10-4A	E-T-A	Circuit Breakers Miniaturised single pole thermal circuit breaker with push-to-reset tease free, trip-free, snap action mechanism (R-type TO CBE to EN 60934) integral type. Approved to CBE standard EN 60934 (IEC 60934). For higher current ratings see	Datasheet	297In Stock	¥3,755.5 ¥3,116 ¥2,875.2 ¥2,548 View ¥2,240.7 ¥2,142.7 ¥1,928.4	Min.: 1 Mult.: 1
Circuit Breakers Single pole switch/thermal circuit breaker (S-type TO CBE to EN 60934) with tease-free, trip-free, snap action mechanism. Designed for snap-in panel mounting utilising round hole or industry standard fuse-holder cut-out dimensions. Fe 1110-F112-P1M1-2.5A E-T-A 1: ¥4,001.3 92In Stock	Mfr. Part # 1110-F112-P1M1-2.5A Mouser Part # 457-1110F112P1M12.5A	E-T-A	Circuit Breakers Single pole switch/thermal circuit breaker (S-type TO CBE to EN 60934) with tease-free, trip-free, snap action mechanism. Designed for snap-in panel mounting utilising round hole or industry standard fuse-holder cut-out dimensions. Fe	Datasheet	92In Stock	¥4,001.3 ¥3,722.3 ¥2,940 ¥2,935 View ¥2,639.3 Quote	Min.: 1 Mult.: 1
Circuit Breakers Single pole, thermal miniaturised circuit breaker designed for automotive applications. Fits into fuse blocks designed to ISO 8820-3, Type F. Automatic reset (for DC 12 V only) and open circuit (modified reset to SAE) version optional. Open circuitve 1620-2-15A E-T-A 1: ¥1,710.8 401In Stock	Mfr. Part # 1620-2-15A Mouser Part # 457-1620-2-15A	E-T-A	Circuit Breakers Single pole, thermal miniaturised circuit breaker designed for automotive applications. Fits into fuse blocks designed to ISO 8820-3, Type F. Automatic reset (for DC 12 V only) and open circuit (modified reset to SAE) version optional. Open circuitve Learn More about E-T-A e t a 1620 circuit breakers	Datasheet	401In Stock	¥1,710.8 ¥1,420.2 ¥1,310.5 ¥1,086.3 View ¥1,001.6 ¥908.6 ¥827.2 ¥760.7	Min.: 1 Mult.: 1
Circuit Breakers Single pole press-to-reset thermal circuit breaker with extremely fast overload switching performance (R-type TO CBE to EN 60934). Single hole threadneck mounting. Type 1410-G1 features changeover contacts suitable for providing statu 1410-G111-L2F1-S01-2A E-T-A 1: ¥2,936.6 190In Stock	Mfr. Part # 1410-G111-L2F1-S01-2A Mouser Part # 457-410G111L2F1S012A	E-T-A	Circuit Breakers Single pole press-to-reset thermal circuit breaker with extremely fast overload switching performance (R-type TO CBE to EN 60934). Single hole threadneck mounting. Type 1410-G1 features changeover contacts suitable for providing statu	Datasheet	190In Stock	¥2,936.6 ¥2,438.3 ¥2,249 ¥1,863.6 View ¥1,717.5 ¥1,541.4 ¥1,531.4 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-20A E-T-A 1: ¥6,022.8 190In Stock	Mfr. Part # 3120-N321-P7T1-W01D-20A Mouser Part # 457-N321P7T1W01D20	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	190In Stock	¥6,022.8 ¥4,996.3 ¥4,609.3 ¥3,817 View ¥3,737.3 ¥3,650.9 Quote	Min.: 1 Mult.: 1
Circuit Breakers 2-13-DM-KM-15 9926252015 Weidmuller 1: ¥18,106.6 72In Stock	Mfr. Part # 9926252015 Mouser Part # 470-9926252015	Weidmuller	Circuit Breakers 2-13-DM-KM-15	Datasheet	72In Stock	¥18,106.6 ¥14,993.8 ¥13,213.3 ¥11,577.2 ¥10,730.1	Min.: 1 Mult.: 1
NTC Thermistors Glass Encapsulated 30K Ohm +/- 5% 25C DKF303N5 Amphenol Advanced Sensors 1: ¥108 2,060In Stock	Mfr. Part # DKF303N5 Mouser Part # 527-DKF303N5	Amphenol Advanced Sensors	NTC Thermistors Glass Encapsulated 30K Ohm +/- 5% 25C Learn More about Amphenol Advanced Sensors amphenol ntc thermistors glass	Datasheet	2,060In Stock	¥108	Min.: 1 Mult.: 1
Surface Mount Fuses 4818 Fuse Square Ceramic Surface Mount Slow Blow 1.6A 0683G1600-01 Bel Fuse 1: ¥310.6 2,041In Stock	Mfr. Part # 0683G1600-01 Mouser Part # 530-0683G1600-01	Bel Fuse	Surface Mount Fuses 4818 Fuse Square Ceramic Surface Mount Slow Blow 1.6A Learn More about Bel Fuse bel 0683g slowblow fuses	Datasheet	2,041In Stock	Cut Tape ¥310.6 ¥269.1 ¥242.5 ¥230.9 Reel ¥182.7 View ¥209.3 ¥199.3 ¥176.1	Min.: 1 Mult.: 1 : 1,500
Surface Mount Fuses Surface mount "Chip fuse" Silver Plated 0402 case size Fast Blow 2A Tape and Reel (10000 pcs.) 0ABA-2000-TN Bel Fuse 1: ¥94.7 5,737In Stock	Mfr. Part # 0ABA-2000-TN Mouser Part # 530-0ABA-2000-TN	Bel Fuse	Surface Mount Fuses Surface mount "Chip fuse" Silver Plated 0402 case size Fast Blow 2A Tape and Reel (10000 pcs.) Learn More about Bel Fuse bel 0aba fast blow chip fuses	Datasheet	5,737In Stock	Cut Tape ¥94.7 ¥84.9 ¥74.1 ¥67.8 View Reel ¥48.2 ¥63.8 ¥56.6 ¥52.8 ¥52.7 ¥48.2 ¥48.2	Min.: 1 Mult.: 1 : 10,000
Surface Mount Fuses 0603 SMD Fuse. Slow Blow 4A 0ABB-4000-TM Bel Fuse 1: ¥142.8 5,387In Stock	Mfr. Part # 0ABB-4000-TM Mouser Part # 530-0ABB-4000-TM	Bel Fuse	Surface Mount Fuses 0603 SMD Fuse. Slow Blow 4A Learn More about Bel Fuse 0abb time delay fuses	Datasheet	5,387In Stock	Cut Tape ¥142.8 ¥120.4 ¥102.6 ¥95.2 View Reel ¥60 ¥90.5 ¥83.4 ¥76.9 ¥72.9 ¥60	Min.: 1 Mult.: 1 : 5,000
Surface Mount Fuses SMD Fuse. Fast Acting, 3.15A, 600Vdc 0ACJ-3150-TE Bel Fuse 1: ¥353.8 3,426In Stock	Mfr. Part # 0ACJ-3150-TE Mouser Part # 530-0ACJ-3150-TE	Bel Fuse	Surface Mount Fuses SMD Fuse. Fast Acting, 3.15A, 600Vdc Learn More about Bel Fuse 0acj smd fuses	Datasheet	3,426In Stock	Cut Tape ¥353.8 ¥333.9 ¥295.7 ¥282.4 Reel ¥240.8 View ¥265.8 ¥254.1 ¥224.2 ¥217.6 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Cartridge Fuses FUSE, CERAMIC TUBE 0.44A 1000VAC1000VDC 0ADHC0440-BE Bel Fuse 1: ¥4,120.9 556In Stock	Mfr. Part # 0ADHC0440-BE Mouser Part # 530-0ADHC0440-BE	Bel Fuse	Cartridge Fuses FUSE, CERAMIC TUBE 0.44A 1000VAC1000VDC Learn More about Bel Fuse bel 0adhc fuses	Datasheet	556In Stock	¥4,120.9 ¥3,426.6 ¥3,160.9 ¥2,619.4 View ¥2,410.1 ¥2,165.9 ¥1,963.3 ¥1,961.6 Quote	Min.: 1 Mult.: 1
Cartridge Fuses 5HT 800-R Bel Fuse 1: ¥111.3 4,979In Stock	Mfr. Part # 5HT 800-R Mouser Part # 530-5HT800-R	Bel Fuse	Cartridge Fuses	Datasheet	4,979In Stock	¥111.3 ¥102.2 ¥84.9 ¥78.2 View ¥70.4 ¥64.9 ¥52.7 ¥49.7 ¥47.2	Min.: 1 Mult.: 1
Cartridge Fuses 5HTP 500-R Bel Fuse 1: ¥156.1 7,204In Stock	Mfr. Part # 5HTP 500-R Mouser Part # 530-5HTP500-R	Bel Fuse	Cartridge Fuses	Datasheet	7,204In Stock	¥156.1 ¥143.3 ¥118.9 ¥109.8 View ¥98.7 ¥91 ¥84.2 ¥74.4 ¥67.8	Min.: 1 Mult.: 1
Surface Mount Fuses 1206 SMT Fuse Fast Acting, 750mA C1F 750 Bel Fuse 1: ¥66.4 9,959In Stock	Mfr. Part # C1F 750 Mouser Part # 530-C1F750	Bel Fuse	Surface Mount Fuses 1206 SMT Fuse Fast Acting, 750mA Learn More about Bel Fuse 0685 c1 fuses	Datasheet	9,959In Stock	Cut Tape ¥66.4 ¥60.3 ¥50.2 ¥46.2 View Reel ¥26.6 ¥41.5 ¥38.4 ¥35.4 ¥33.9 ¥26.6 MouseReel Available	Min.: 1 Mult.: 1 : 5,000
Fuse Clips Clip 5 mm Nickel Plated 00300210N Littelfuse 1: ¥44.8 12,178In Stock	Mfr. Part # 00300210N Mouser Part # 576-00300210N	Littelfuse	Fuse Clips Clip 5 mm Nickel Plated Learn More about Littelfuse _fuseholders	Datasheet	12,178In Stock	¥44.8 ¥37.2 ¥35 ¥30.2 View ¥29.2 ¥27.6 ¥25.9 ¥24.4 ¥23.1	Min.: 1 Mult.: 1
Fuse Clips Clip 13/32 Dia 01050001Z Littelfuse 1: ¥91.4 17,721In Stock	Mfr. Part # 01050001Z Mouser Part # 576-01050001Z	Littelfuse	Fuse Clips Clip 13/32 Dia	Datasheet	17,721In Stock	¥91.4 ¥78.6 ¥74.4 ¥64.4 View ¥59 ¥56.3	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes TVS Hi Power Diode 30KPA Axial 30KPA58A Littelfuse 1: ¥3,817 868In Stock	Mfr. Part # 30KPA58A Mouser Part # 576-30KPA58A	Littelfuse	ESD Protection Diodes / TVS Diodes TVS Hi Power Diode 30KPA Axial Learn More about Littelfuse tvsdiodes	Datasheet	868In Stock	Cut Tape ¥3,817 ¥2,744 ¥2,488.2 ¥2,484.9 ¥2,034.7 Reel ¥2,031.4	Min.: 1 Mult.: 1 : 800

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Circuit Protection

Types of Circuit Protection