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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.
Circuit Breakers BRKR 3VA62 3P 250A 65KA ETU3-LI AL 3VA62256HL360AA0 Siemens 1: $4,184.69 1In Stock	Mfr. Part No. 3VA62256HL360AA0 Mouser Part No 982-3VA62256HL360AA0	Siemens	Circuit Breakers BRKR 3VA62 3P 250A 65KA ETU3-LI AL Learn More about Siemens 3va molded case circuit breakers	Datasheet	1In Stock	$4,184.69	Min.: 1 Mult.: 1
Circuit Breakers BRKR ED4 2P 480V 20A ED42B020 Siemens 1: $1,793.42 1In Stock	Mfr. Part No. ED42B020 Mouser Part No 982-ED42B020	Siemens	Circuit Breakers BRKR ED4 2P 480V 20A	Datasheet	1In Stock	$1,793.42	Min.: 1 Mult.: 1
Circuit Breakers Multi9 GFP 4P 100A 86mA A-SI 480Y/277V M9R12491 Schneider Electric 1: $1,500.00 3In Stock New At Mouser	Mfr. Part No. M9R12491 Mouser Part No 996-M9R12491 New At Mouser	Schneider Electric	Circuit Breakers Multi9 GFP 4P 100A 86mA A-SI 480Y/277V	Datasheet	3In Stock	$1,500.00	Min.: 1 Mult.: 1
Fuse Holder Accessories M10 Insulated Stud 908-082 Littelfuse 1: $6.17 82In Stock	Mfr. Part No. 908-082 Mouser Part No 576-908-082	Littelfuse	Fuse Holder Accessories M10 Insulated Stud	Datasheet	82In Stock	$6.17 $5.78 $5.57 $4.34 View $3.51 $3.36 $3.24	Min.: 1 Mult.: 1
Surface Mount Fuses .075A 2.0mohm Brown Thin Film Fuses 0201 F0201G0R07FNTR\500 KYOCERA AVX 1: $0.71 4,320In Stock	Mfr. Part No. F0201G0R07FNTR\500 Mouser Part No 581-F0201G0R07FNTR\5	KYOCERA AVX	Surface Mount Fuses .075A 2.0mohm Brown Thin Film Fuses 0201 Learn More about KYOCERA AVX avx accu guard low current fuses	Datasheet	4,320In Stock	Cut Tape $0.71 $0.573 $0.482 $0.424 Reel $0.35 View $0.381 $0.323 $0.298 $0.26 MouseReel Available	Min.: 1 Mult.: 1 : 500
NTC (Negative Temperature Coefficient) Thermistors NTCFLEX0510k2%3435K25mm Vishay NTCAFLEX05103GL NTCAFLEX05103GL Vishay 1: $3.03 179In Stock	Mfr. Part No. NTCAFLEX05103GL Mouser Part No 594-NTCAFLEX05103GL	Vishay	NTC (Negative Temperature Coefficient) Thermistors NTCFLEX0510k2%3435K25mm Learn More about Vishay _NTCAFLEX05	Datasheet	179In Stock	$3.03 $2.28 $2.02 $1.92 View $1.86 $1.62 $1.54 $1.49	Min.: 1 Mult.: 1
Fuse Holder CFB1 FUSE BLOCK 150A FUSE CFB1-150 Bourns 1: $73.42 7In Stock 40Expected 28/12/2026	Mfr. Part No. CFB1-150 Mouser Part No 652-CFB1-150	Bourns	Fuse Holder CFB1 FUSE BLOCK 150A FUSE Learn More about Bourns cfb riedon fuse blocks	Datasheet	7In Stock 40Expected 28/12/2026	$73.42 $61.48 $57.34 $45.82 View $44.50 $43.93	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 400W,22V 5%,UNIDIR,SMA TVS P4SMA22AHM3_A/I Vishay Semiconductors 1: $1.02 7,480In Stock	Mfr. Part No. P4SMA22AHM3_A/I Mouser Part No 78-P4SMA22AHM3_A/I	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,22V 5%,UNIDIR,SMA TVS Learn More about Vishay Semiconductors vishay semi esmp package evolution	Datasheet	7,480In Stock	Cut Tape $1.02 $0.642 $0.41 $0.306 View Reel $0.153 $0.247 $0.214 $0.21 $0.153	Min.: 1 Mult.: 1 : 7,500
ESD Protection Diodes / TVS Diodes 1KW,12V 5%,UNIDIR,SMB TVS Vishay Semiconductors SMB10J12AHE3_B/H SMB10J12AHE3_B/H Vishay Semiconductors 1: $1.44 2,383In Stock	Mfr. Part No. SMB10J12AHE3_B/H Mouser Part No 78-SMB10J12AHE3BH	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 1KW,12V 5%,UNIDIR,SMB TVS Learn More about Vishay Semiconductors vishay semi esmp package evolution	Datasheet	2,383In Stock	Cut Tape $1.44 $0.899 $0.59 $0.433 Reel $0.394 $0.299	Min.: 1 Mult.: 1 : 750
NTC (Negative Temperature Coefficient) Thermistors NCU15XW153E60RC Murata Electronics 1: $0.13 9,259In Stock	Mfr. Part No. NCU15XW153E60RC Mouser Part No 81-NCU15XW153E60RC	Murata Electronics	NTC (Negative Temperature Coefficient) Thermistors Learn More about Murata Electronics murata ncu ntc thermistors	Datasheet	9,259In Stock	$0.13 $0.112 $0.099 $0.081 View $0.071 $0.068 $0.061 $0.057 $0.051	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NCU15XW222J60RC Murata Electronics 1: $0.13 9,982In Stock	Mfr. Part No. NCU15XW222J60RC Mouser Part No 81-NCU15XW222J60RC	Murata Electronics	NTC (Negative Temperature Coefficient) Thermistors Learn More about Murata Electronics murata ncu ntc thermistors	Datasheet	9,982In Stock	$0.13 $0.112 $0.099 $0.081 View $0.071 $0.068 $0.061 $0.057 $0.053	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NCU15XW223J60RC Murata Electronics 1: $0.13 9,998In Stock	Mfr. Part No. NCU15XW223J60RC Mouser Part No 81-NCU15XW223J60RC	Murata Electronics	NTC (Negative Temperature Coefficient) Thermistors Learn More about Murata Electronics murata ncu ntc thermistors	Datasheet	9,998In Stock	$0.13 $0.112 $0.099 $0.081 View $0.071 $0.068 $0.061 $0.057 $0.051	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NCU15XW223J6SRC Murata Electronics 1: $0.11 9,520In Stock	Mfr. Part No. NCU15XW223J6SRC Mouser Part No 81-NCU15XW223J6SRC	Murata Electronics	NTC (Negative Temperature Coefficient) Thermistors Learn More about Murata Electronics murata ncu auto thermistors	Datasheet	9,520In Stock	$0.11 $0.086 $0.076 $0.065 View $0.057 $0.054 $0.049 $0.043 $0.042	Min.: 1 Mult.: 1
Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, Quarter-wave stub technology 3400.17.0428 HUBER+SUHNER 1: $185.25 36In Stock	Mfr. Part No. 3400.17.0428 Mouser Part No 455-3400170428	HUBER+SUHNER	Connectorised Surge Protectors COAXIAL SURGE PROTECTOR DEVICE, Quarter-wave stub technology Learn More about HUBER+SUHNER huber suhner cable solutions	Datasheet	36In Stock	$185.25 $170.69 $167.09 View Quote	Min.: 1 Mult.: 1
Circuit Breakers 508, 1P, DM, 24VDC, 2CH, ,4A/4A, No Comm CL2 REX12-TA2-107-DC24V-4A/4A-CL2 E-T-A 1: $98.99 46In Stock	Mfr. Part No. REX12-TA2-107-DC24V-4A/4A-CL2 Mouser Part No 457-107DC24V4A/4ACL2	E-T-A	Circuit Breakers 508, 1P, DM, 24VDC, 2CH, ,4A/4A, No Comm CL2	Datasheet	46In Stock	$98.99 $85.90 $73.47 $71.06 View Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories 201 ACC- Busbar 1-pole 90deg 1 Meter X22254001 E-T-A 1: $43.70 71In Stock 1On Order	Mfr. Part No. X22254001 Mouser Part No 457-X22254001	E-T-A	Circuit Breaker Accessories 201 ACC- Busbar 1-pole 90deg 1 Meter		71In Stock 1On Order	$43.70 $37.24 $34.63 $31.14 View $30.32 $29.32	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes TVS array 4 line Bi-dir, 300W (8/20us), Stand-off voltage = 12V SMDA12Ce3/TR7 Microchip Technology 1: $1.69 1,143In Stock	Mfr. Part No. SMDA12Ce3/TR7 Mouser Part No 494-SMDA12CE3/TR7	Microchip Technology	ESD Protection Diodes / TVS Diodes TVS array 4 line Bi-dir, 300W (8/20us), Stand-off voltage = 12V	Datasheet	1,143In Stock	Cut Tape $1.69 Reel $1.42 MouseReel Available	Min.: 1 Mult.: 1 : 500
Power Outlet Strips PDUMH20HV PDUMH20HV Tripp Lite Restricted Availability	Mfr. Part No. PDUMH20HV Mouser Part No 545-PDUMH20HV	Tripp Lite	Power Outlet Strips PDUMH20HV Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability
Circuit Protection Kits Tgc/Mgde-Ms5 12-24V Time Delay 6' 500A 08075160 Littelfuse 1: $467.23 5In Stock	Mfr. Part No. 08075160 Mouser Part No 576-08075160	Littelfuse	Circuit Protection Kits Tgc/Mgde-Ms5 12-24V Time Delay 6' 500A Learn More about Littelfuse relays switches cvp	Datasheet	5In Stock	$467.23 $387.04 $336.07	Min.: 1 Mult.: 1
PTC (Positive Temperature Coefficient) Thermistors PTCCPLDD5D00A019265140Te3 Vishay / BC Components PTCCL05H190HTE PTCCL05H190HTE Vishay / BC Components 1: $1.44 3,003In Stock	Mfr. Part No. PTCCL05H190HTE Mouser Part No 594-PTCCL05H190HTE	Vishay / BC Components	PTC (Positive Temperature Coefficient) Thermistors PTCCPLDD5D00A019265140Te3	Datasheet	3,003In Stock	$1.44 $1.08 $0.861 $0.809 View $0.789 $0.664 $0.607 $0.594	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 1500W 16V Unidirect 1N6276A-E3/54 Vishay Semiconductors 1: $1.59 6,117In Stock	Mfr. Part No. 1N6276A-E3/54 Mouser Part No 625-1N6276A-E3/54	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 1500W 16V Unidirect Learn More about Vishay Semiconductors vishay semi transzorb transient voltage suppressors	Datasheet	6,117In Stock	Cut Tape $1.59 $0.995 $0.834 $0.652 Reel $0.504 View $0.504 $0.459 $0.383	Min.: 1 Mult.: 1 : 1,400
ESD Protection Diodes / TVS Diodes 600W 350V Bidirect P6KE350CA-E3/54 Vishay Semiconductors 1: $2.15 2,643In Stock	Mfr. Part No. P6KE350CA-E3/54 Mouser Part No 625-P6KE350CA-E3	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 600W 350V Bidirect Learn More about Vishay Semiconductors vishay tvs esd diodes	Datasheet	2,643In Stock	Cut Tape $2.15 $1.37 $1.10 $0.916 Reel $0.623 View $0.736 $0.657 $0.611 $0.595	Min.: 1 Mult.: 1 : 4,000
NTC (Negative Temperature Coefficient) Thermistors NTC Thermistor 0603 4K7 J60 B-3650 B57301V2472J60 TDK 1: $0.39 11,747In Stock 8,000Expected 23/11/2026	Mfr. Part No. B57301V2472J60 Mouser Part No 871-B57301V2472J60	TDK	NTC (Negative Temperature Coefficient) Thermistors NTC Thermistor 0603 4K7 J60 B-3650 Learn More about TDK b573xv2 ntc thermistors	Datasheet	11,747In Stock 8,000Expected 23/11/2026	Cut Tape $0.39 $0.335 $0.295 $0.237 Reel $0.162 View $0.196 $0.164 $0.156 $0.138 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Circuit Breakers XT4H 250 TMF 200-2000 3P F F UL/CSA XT4HU3200AFF000XXX ABB 1: $1,823.97 3In Stock	Mfr. Part No. XT4HU3200AFF000XXX Mouser Part No 894-XT4HU3200AFF000X	ABB	Circuit Breakers XT4H 250 TMF 200-2000 3P F F UL/CSA Learn More about ABB sace tmax xt circuit breakers	Datasheet	3In Stock	$1,823.97	Min.: 1 Mult.: 1
Circuit Breakers RKR 3VA51 3P 15A 65KA FTAM 3VA51956EC310AA0 Siemens 1: $1,086.56 2In Stock	Mfr. Part No. 3VA51956EC310AA0 Mouser Part No 982-3VA51956EC310AA0	Siemens	Circuit Breakers RKR 3VA51 3P 15A 65KA FTAM Learn More about Siemens 3va molded case circuit breakers	Datasheet	2In Stock	$1,086.56	Min.: 1 Mult.: 1

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Circuit Protection

Types of Circuit Protection