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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 (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Varistors 14mm Radial Disc MOV - Kinked Leads, T&R MOV-14D471KKTR Bourns 1: $0.89 11,677In Stock	Mfr. Part No. MOV-14D471KKTR Mouser Part No 652-MOV-14D471KKTR	Bourns	Varistors 14mm Radial Disc MOV - Kinked Leads, T&R Learn More about Bourns mov xd metal oxide varistors	Datasheet	11,677In Stock	Cut Tape $0.89 $0.535 $0.287 Reel $0.239 $0.202 View $0.186 $0.165 $0.161 MouseReel Available	Min.: 1 Mult.: 1 : 400
Varistors 20mm Radial Disc MOV - Kinked Leads, T&R MOV-20D781KKTR Bourns 1: $2.06 3,942In Stock	Mfr. Part No. MOV-20D781KKTR Mouser Part No 652-MOV-20D781KKTR	Bourns	Varistors 20mm Radial Disc MOV - Kinked Leads, T&R Learn More about Bourns mov xd metal oxide varistors	Datasheet	3,942In Stock	Cut Tape $2.06 $1.29 $0.948 Reel $0.885 $0.782 View $0.62 $0.594 $0.583 MouseReel Available	Min.: 1 Mult.: 1 : 250
NTC (Negative Temperature Coefficient) Thermistors RADIAL LEAD DISC POT ALUMTAB HSG NTC TER A-850 Amphenol Advanced Sensors 1: $68.16 325In Stock	Mfr. Part No. A-850 Mouser Part No 527-A-850	Amphenol Advanced Sensors	NTC (Negative Temperature Coefficient) Thermistors RADIAL LEAD DISC POT ALUMTAB HSG NTC TER Learn More about Amphenol Advanced Sensors amphenol ntc thermistors radial lead		325In Stock	$68.16 $62.31 $57.40 $53.81 View $52.90 $47.57 Quote	Min.: 1 Mult.: 1
Circuit Breakers NSX400F 36kA AC 4P4D 400A 2.3 C40F42D400 Schneider Electric 1: $5,453.98 3In Stock New At Mouser	Mfr. Part No. C40F42D400 Mouser Part No 996-C40F42D400 New At Mouser	Schneider Electric	Circuit Breakers NSX400F 36kA AC 4P4D 400A 2.3	Datasheet	3In Stock	$5,453.98	Min.: 1 Mult.: 1
Fuse Holder FUSE BOX ASSY, HARD WIRED,PRE FUSE 2141034-1 TE Connectivity / AMP 1: $28.50 1,671In Stock	Mfr. Part No. 2141034-1 Mouser Part No 571-2141034-1	TE Connectivity / AMP	Fuse Holder FUSE BOX ASSY, HARD WIRED,PRE FUSE	Datasheet	1,671In Stock	$28.50 $23.65 $22.54 $22.53 $14.93	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes TVS 2KA RATED 170V BI SMTO218 L LTKAK2-170C-L Littelfuse 1: $27.88 154In Stock	Mfr. Part No. LTKAK2-170C-L Mouser Part No 576-LTKAK2-170C-L	Littelfuse	ESD Protection Diodes / TVS Diodes TVS 2KA RATED 170V BI SMTO218 L Learn More about Littelfuse ltkak2 l tvs diodes	Datasheet	154In Stock	$27.88 $20.50 $19.69 $19.68	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes TVS 5KW AECQ-101 TR13 RoHS TP5.0SMDJ160A Littelfuse 1: $5.46 5,404In Stock	Mfr. Part No. TP5.0SMDJ160A Mouser Part No 576-TP5.0SMDJ160A	Littelfuse	ESD Protection Diodes / TVS Diodes TVS 5KW AECQ-101 TR13 RoHS Learn More about Littelfuse tp5 0smdj tvs diodes	Datasheet	5,404In Stock	Cut Tape $5.46 $3.66 $3.23 $2.90 View Reel $2.07 $2.58 $2.21 $2.07 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
NTC (Negative Temperature Coefficient) Thermistors 5 dia Power NTC 5ohm Y kink bulk BN-LG05Y5R0MYB Bourns 1: $0.28 13,566In Stock	Mfr. Part No. BN-LG05Y5R0MYB Mouser Part No 652-BN-LG05Y5R0MYB	Bourns	NTC (Negative Temperature Coefficient) Thermistors 5 dia Power NTC 5ohm Y kink bulk Learn More about Bourns bn powrtherm thermistors	Datasheet	13,566In Stock	$0.28 $0.246 $0.216 $0.183 View $0.164 $0.155 $0.138 $0.113	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 1.5KW,540V 5%,UNIDIR,SMC TVS Vishay Semiconductors 1.5SMC540AHM3_B/H 1.5SMC540AHM3_B/H Vishay Semiconductors 1: $2.17 2,844In Stock	Mfr. Part No. 1.5SMC540AHM3_B/H Mouser Part No 78-1.5SMC540AHM3_B/H	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 1.5KW,540V 5%,UNIDIR,SMC TVS Learn More about Vishay Semiconductors vishay 1point5smc tvs diodes	Datasheet	2,844In Stock	Cut Tape $2.17 $1.39 $1.05 $0.927 Reel $0.664 View $0.694 $0.585 $0.584 $0.537	Min.: 1 Mult.: 1 : 850
ESD Protection Diodes / TVS Diodes 600W,47V 5%, DFN3820A TVS 6DFN47A-M3/I Vishay Semiconductors 1: $0.76 12,125In Stock	Mfr. Part No. 6DFN47A-M3/I Mouser Part No 78-6DFN47A-M3/I	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 600W,47V 5%, DFN3820A TVS Learn More about Vishay Semiconductors vishay 6dfn12a to 6dfn51a tvs diodes	Datasheet	12,125In Stock	Cut Tape $0.76 $0.346 $0.305 $0.232 View Reel $0.152 $0.213 $0.209 $0.152	Min.: 1 Mult.: 1 : 14,000
ESD Protection Diodes / TVS Diodes 1-Line 9V 39.0A TVS DO-214AA(SMB) SMBJ9.0CA Semtech 1: $1.20 6,226In Stock	Mfr. Part No. SMBJ9.0CA Mouser Part No 947-SMBJ9.0CA	Semtech	ESD Protection Diodes / TVS Diodes 1-Line 9V 39.0A TVS DO-214AA(SMB) Learn More about Semtech smbjxxca tvs	Datasheet	6,226In Stock	Cut Tape $1.20 $0.555 $0.492 $0.381 Reel $0.299 View $0.376 $0.293 $0.264 $0.24 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Thermal Cut-offs TCO, High Current, SMD, 72C, Self Hold AEC-Q200 SD72ABB Bourns 1: $2.84 3,469In Stock	Mfr. Part No. SD72ABB Mouser Part No 652-SD72ABB	Bourns	Thermal Cut-offs TCO, High Current, SMD, 72C, Self Hold AEC-Q200 Learn More about Bourns ad sd miniature tco devices	Datasheet	3,469In Stock	Cut Tape $2.84 $2.46 $1.99 $1.69 View Reel $1.24 $1.64 $1.39 $1.33 $1.24 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
SCRs 12 Amp High Temperature High dvdt SCR-TO252 SV8012DRP Littelfuse 1: $3.48 2,239In Stock	Mfr. Part No. SV8012DRP Mouser Part No 576-SV8012DRP	Littelfuse	SCRs 12 Amp High Temperature High dvdt SCR-TO252 Learn More about Littelfuse sv8012x scrs	Datasheet	2,239In Stock	Cut Tape $3.48 $2.27 $1.58 $1.29 Reel $1.22 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
ESD Protection Diodes / TVS Diodes TVS 5KW AECQ-101 TR13 RoHS TP5.0SMDJ43CA Littelfuse 1: $4.60 4,681In Stock	Mfr. Part No. TP5.0SMDJ43CA Mouser Part No 576-TP5.0SMDJ43CA	Littelfuse	ESD Protection Diodes / TVS Diodes TVS 5KW AECQ-101 TR13 RoHS Learn More about Littelfuse tp5 0smdj tvs diodes	Datasheet	4,681In Stock	Cut Tape $4.60 $3.04 $2.36 $2.14 Reel $1.52 View $1.81 $1.66 $1.47 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
ESD Protection Diodes / TVS Diodes TVS SURF MT 600W 219V DO214AA AEQ101 T&R TPSMB219A Littelfuse 1: $1.26 5,920In Stock	Mfr. Part No. TPSMB219A Mouser Part No 576-TPSMB219A	Littelfuse	ESD Protection Diodes / TVS Diodes TVS SURF MT 600W 219V DO214AA AEQ101 T&R Learn More about Littelfuse tpsmb tvs diodes	Datasheet	5,920In Stock	Cut Tape $1.26 $0.584 $0.519 $0.402 Reel $0.29 View $0.264 $0.248 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
NTC (Negative Temperature Coefficient) Thermistors 10 dia Power NTC 16ohm Y kink bulk BN-LG10Y160MYB Bourns 1: $0.56 9,994In Stock	Mfr. Part No. BN-LG10Y160MYB Mouser Part No 652-BN-LG10Y160MYB	Bourns	NTC (Negative Temperature Coefficient) Thermistors 10 dia Power NTC 16ohm Y kink bulk Learn More about Bourns bn powrtherm thermistors	Datasheet	9,994In Stock	$0.56 $0.491 $0.396 $0.326 View $0.283 $0.275 $0.245 $0.227	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors 15 dia Power NTC 220ohm Y kink bulk BN-LG15Y221MYB Bourns 1: $0.95 11,898In Stock	Mfr. Part No. BN-LG15Y221MYB Mouser Part No 652-BN-LG15Y221MYB	Bourns	NTC (Negative Temperature Coefficient) Thermistors 15 dia Power NTC 220ohm Y kink bulk Learn More about Bourns bn powrtherm thermistors	Datasheet	11,898In Stock	$0.95 $0.722 $0.622 $0.60 View $0.512 $0.445 $0.403 $0.369	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes RSDT 22V RSDT27RSMTFTL1 ROHM Semiconductor 1: $2.61 7,800In Stock	Mfr. Part No. RSDT27RSMTFTL1 Mouser Part No 755-RSDT27RSMTFTL1	ROHM Semiconductor	ESD Protection Diodes / TVS Diodes RSDT 22V Learn More about ROHM Semiconductor rohm rsdtxnsfh tvs	Datasheet	7,800In Stock	Cut Tape $2.61 $1.73 $1.32 $1.13 Reel $0.807 View $0.898 $0.849 $0.754 $0.733 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
ESD Protection Diodes / TVS Diodes 1.5KW,480V 5%,UNIDIR,SMC TVS 1.5SMC480AHM3_B/I Vishay Semiconductors 1: $2.16 6,393In Stock	Mfr. Part No. 1.5SMC480AHM3_B/I Mouser Part No 78-1.5SMC480AHM3_B/I	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 1.5KW,480V 5%,UNIDIR,SMC TVS Learn More about Vishay Semiconductors vishay 1point5smc tvs diodes	Datasheet	6,393In Stock	Cut Tape $2.16 $1.38 $1.11 $0.926 Reel $0.584 View $0.744 $0.664 $0.608 $0.537 MouseReel Available	Min.: 1 Mult.: 1 : 3,500
ESD Protection Diodes / TVS Diodes 28V 1000W UniDir TransZorb 5% Tol SMBJ28A Vishay Semiconductors 1: $0.60 52,241In Stock	Mfr. Part No. SMBJ28A Mouser Part No 78-SMBJ28A	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 28V 1000W UniDir TransZorb 5% Tol Learn More about Vishay Semiconductors vishay smbjxxd tvs	Datasheet	52,241In Stock	Cut Tape $0.60 $0.373 $0.238 $0.178 Reel $0.143 View $0.123 $0.121 $0.103 $0.098 MouseReel Available	Min.: 1 Mult.: 1 : 750
ESD Protection Diodes / TVS Diodes 1-Line 5V 5pF 0.15 Ohms ESD UCLAMP5011Z2CTKT Semtech 1: $0.29 225,385In Stock	Mfr. Part No. UCLAMP5011Z2CTKT Mouser Part No 947-UCLAMP5011Z2CTKT	Semtech	ESD Protection Diodes / TVS Diodes 1-Line 5V 5pF 0.15 Ohms ESD	Datasheet	225,385In Stock	Cut Tape $0.29 $0.126 $0.11 $0.081 View Reel $0.038 $0.065 $0.057 $0.054 $0.043 $0.038 MouseReel Available	Min.: 1 Mult.: 1 : 20,000
ESD Protection Diodes / TVS Diodes Automotive 22 V TVS for load dump in D2PAK LDP01-26AY STMicroelectronics 1: $4.28 12,347In Stock	Mfr. Part No. LDP01-26AY Mouser Part No 511-LDP01-26AY	STMicroelectronics	ESD Protection Diodes / TVS Diodes Automotive 22 V TVS for load dump in D2PAK	Datasheet	12,347In Stock	Cut Tape $4.28 $2.28 $1.91 $1.71 Reel $1.42 View $1.54 $1.35 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
ESD Protection Diodes / TVS Diodes 58Vso 45VAC 53A 5KP58CA Littelfuse 1: $4.13 16,507In Stock 3,200Expected 09/12/2026	Mfr. Part No. 5KP58CA Mouser Part No 576-5KP58CA	Littelfuse	ESD Protection Diodes / TVS Diodes 58Vso 45VAC 53A Learn More about Littelfuse 5kp tvs diodes	Datasheet	16,507In Stock 3,200Expected 09/12/2026	Cut Tape $4.13 $2.71 $2.10 $1.89 $1.46 Reel $1.27	Min.: 1 Mult.: 1 : 800
ESD Protection Diodes / TVS Diodes 210W TVS Diode Array SOT23-3 AQ24CANFD-02HTG Littelfuse 1: $0.89 158,287In Stock	Mfr. Part No. AQ24CANFD-02HTG Mouser Part No 576-AQ24CANFD-02HTG	Littelfuse	ESD Protection Diodes / TVS Diodes 210W TVS Diode Array SOT23-3 Learn More about Littelfuse aq24 tvs diode array	Datasheet	158,287In Stock	Cut Tape $0.89 $0.561 $0.366 $0.276 Reel $0.23 View $0.251 $0.224 $0.19 $0.174 MouseReel Available	Min.: 1 Mult.: 1 : 3,000
Fuse Holder Accessories Junction Block 3/8" Pass Thru Stud Red JBPT0001Z Littelfuse 1: $88.67 214In Stock	Mfr. Part No. JBPT0001Z Mouser Part No 576-JBPT0001Z	Littelfuse	Fuse Holder Accessories Junction Block 3/8" Pass Thru Stud Red Learn More about Littelfuse _fuseholders	Datasheet	214In Stock	$88.67 $88.52 $71.22 $66.09 View $62.70 Quote	Min.: 1 Mult.: 1

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Circuit Protection

Types of Circuit Protection