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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.
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
Circuit Breaker Accessories PDG2 TERMINAL (STEEL), 100A, 14-1/0, 3P Eaton Electrical PDG2X3T100 PDG2X3T100 Eaton Electrical 1: $88.79 5In Stock 6Expected 13/11/2026 New Product	Mfr. Part No. PDG2X3T100 Mouser Part No 504-PDG2X3T100 New Product	Eaton Electrical	Circuit Breaker Accessories PDG2 TERMINAL (STEEL), 100A, 14-1/0, 3P	Datasheet	5In Stock 6Expected 13/11/2026	$88.79 $73.65 $69.26 $57.71 $53.86	Min.: 1 Mult.: 1
Circuit Breaker Accessories PDG5 TERM (AL), 1200A, (4) 4/0-500 Eaton Electrical PDG5X1TA1200 PDG5X1TA1200 Eaton Electrical 1: $130.73 5In Stock New Product	Mfr. Part No. PDG5X1TA1200 Mouser Part No 504-PDG5X1TA1200 New Product	Eaton Electrical	Circuit Breaker Accessories PDG5 TERM (AL), 1200A, (4) 4/0-500	Datasheet	5In Stock	$130.73 $108.40 $99.96 $82.67 View $76.36 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories UVTA COIL 48VDC_FOR VCP-W BKRS Eaton Electrical 8064A19G01 8064A19G01 Eaton Electrical 1: $864.41 1In Stock New Product	Mfr. Part No. 8064A19G01 Mouser Part No 504-8064A19G01 New Product	Eaton Electrical	Circuit Breaker Accessories UVTA COIL 48VDC_FOR VCP-W BKRS		1In Stock	$864.41	Min.: 1 Mult.: 1
Circuit Breaker Accessories LG Handle Mech Close Couple Black Eaton Electrical LHMCCB LHMCCB Eaton Electrical 1: $351.69 1In Stock New Product	Mfr. Part No. LHMCCB Mouser Part No 504-LHMCCB New Product	Eaton Electrical	Circuit Breaker Accessories LG Handle Mech Close Couple Black	Datasheet	1In Stock	$351.69 $290.85 $273.89 View Quote	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3 ELECT / 1100v TDK B88069X7931T702 B88069X7931T702 TDK 1: $6.28 467In Stock New Product	Mfr. Part No. B88069X7931T702 Mouser Part No 871-B88069X7931T702 New Product	TDK	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors 3 ELECT / 1100v	Datasheet	467In Stock	Cut Tape $6.28 $5.80 $5.59 $4.35 Reel $3.06 View $3.75 $3.52 $2.99 $2.84	Min.: 1 Mult.: 1 : 700
Circuit Breaker Accessories F FRM FLEX Shaft LEN 4 FT Nema 1,3R,12 Eaton Electrical F1S04C F1S04C Eaton Electrical 1: $915.62 1In Stock New Product	Mfr. Part No. F1S04C Mouser Part No 504-F1S04C New Product	Eaton Electrical	Circuit Breaker Accessories F FRM FLEX Shaft LEN 4 FT Nema 1,3R,12	Datasheet	1In Stock	$915.62	Min.: 1 Mult.: 1
Circuit Breaker Accessories UNDERVOLTAGE RELEASE Eaton Electrical NZM4-XU480-525AC NZM4-XU480-525AC Eaton Electrical 1: $855.74 1In Stock New Product	Mfr. Part No. NZM4-XU480-525AC Mouser Part No 504-NZM4-XU480-525AC New Product	Eaton Electrical	Circuit Breaker Accessories UNDERVOLTAGE RELEASE	Datasheet	1In Stock	$855.74 $820.56 $797.64 View Quote	Min.: 1 Mult.: 1
Thermal Cut-offs TCO, High Current, SMD, 85C, Self Hold AEC-Q200 SD85ABB Bourns 1: $2.84 3,205In Stock	Mfr. Part No. SD85ABB Mouser Part No 652-SD85ABB	Bourns	Thermal Cut-offs TCO, High Current, SMD, 85C, Self Hold AEC-Q200 Learn More about Bourns ad sd miniature tco devices	Datasheet	3,205In Stock	Cut Tape $2.84 $2.46 $1.99 $1.69 View Reel $1.17 $1.64 $1.39 $1.18 $1.17 MouseReel Available	Min.: 1 Mult.: 1 : 4,000
Circuit Breaker Accessories 1A/1B ALARM SW Eaton Electrical MA1L1RPK MA1L1RPK Eaton Electrical 1: $572.69 1In Stock New Product	Mfr. Part No. MA1L1RPK Mouser Part No 504-MA1L1RPK New Product	Eaton Electrical	Circuit Breaker Accessories 1A/1B ALARM SW		1In Stock	$572.69 $436.73 $417.22 View Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories PDG2 TERMINAL (AL), 225A, 6-300, 3P Eaton Electrical PDG2X3TA225K PDG2X3TA225K Eaton Electrical 1: $226.41 6In Stock New Product	Mfr. Part No. PDG2X3TA225K Mouser Part No 504-PDG2X3TA225K New Product	Eaton Electrical	Circuit Breaker Accessories PDG2 TERMINAL (AL), 225A, 6-300, 3P	Datasheet	6In Stock	$226.41 $187.65 $168.75 $149.99 View Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories PD5 TERMINAL COVER, UL/IEC, 3P Eaton Electrical PDG5XTC3P PDG5XTC3P Eaton Electrical 1: $176.53 5In Stock New Product	Mfr. Part No. PDG5XTC3P Mouser Part No 504-PDG5XTC3P New Product	Eaton Electrical	Circuit Breaker Accessories PD5 TERMINAL COVER, UL/IEC, 3P	Datasheet	5In Stock	$176.53 $146.38 $136.41 $112.34 $104.31	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 600W,28V 5%, SlimSMA BIDIR TVS Vishay Semiconductors SMA6F28CA-M3/H SMA6F28CA-M3/H Vishay Semiconductors 1: $0.95 3,460In Stock New Product	Mfr. Part No. SMA6F28CA-M3/H Mouser Part No 78-SMA6F28CA-M3\H New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 600W,28V 5%, SlimSMA BIDIR TVS	Datasheet	3,460In Stock	Cut Tape $0.95 $0.60 $0.383 $0.286 Reel $0.20 View $0.231 $0.196 $0.167 $0.158	Min.: 1 Mult.: 1 : 3,500
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 13,557In Stock 6,150On Order	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	13,557In Stock 6,150On Order On Order Ship Dates Mfr. No: 5KP58CA Stock: 13,557 Can Dispatch Immediately On Order: 2,950 Expected 11/11/2026 3,200 Expected 09/12/2026 Factory Lead Time: 22 Weeks	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
ESD Protection Diodes / TVS Diodes SMP Diode 0201 5vdc 10 pf <8v clamp@1a GG020105100N2P KYOCERA AVX 1: $0.39 845,840In Stock	Mfr. Part No. GG020105100N2P Mouser Part No 581-GG020105100N2P	KYOCERA AVX	ESD Protection Diodes / TVS Diodes SMP Diode 0201 5vdc 10 pf <8v clamp@1a Learn More about KYOCERA AVX avx giguard esd protection diodes	Datasheet	845,840In Stock	Cut Tape $0.39 $0.275 $0.134 $0.112 View Reel $0.051 $0.078 $0.067 $0.064 $0.057 $0.051 MouseReel Available	Min.: 1 Mult.: 1 : 15,000
Surface Mount Fuses 35A 250V FAST ACTING SF-3812F3500T-2 Bourns 1: $4.18 9,653In Stock	Mfr. Part No. SF-3812F3500T-2 Mouser Part No 652-SF-3812F3500T-2	Bourns	Surface Mount Fuses 35A 250V FAST ACTING Learn More about Bourns sf 3812f t smd fuses	Datasheet	9,653In Stock	Cut Tape $4.18 $3.51 $2.76 $2.45 Reel $1.74 View $2.20 $2.03 $1.87 $1.57 MouseReel Available	Min.: 1 Mult.: 1 : 2,500
Triacs THYR AND TRIACS BTA208S-800E,118 WeEn Semiconductors 1: $2.02 57,463In Stock	Mfr. Part No. BTA208S-800E,118 Mouser Part No 771-BTA208S-800E118	WeEn Semiconductors	Triacs THYR AND TRIACS Learn More about WeEn Semiconductors nxpbtaxxx	Datasheet	57,463In Stock	Cut Tape $2.02 $1.22 $0.822 $0.646 Reel $0.499 View $0.552 $0.42 MouseReel Available	Min.: 1 Mult.: 1 : 2,500

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Circuit Protection

Types of Circuit Protection