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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.
Circuit Breakers MSP S0 27-32A AUX 1NO 1NC SCREW 3RV20214EA15 Siemens 1: $554.70 7In Stock	Mfr. Part No. 3RV20214EA15 Mouser Part No 982-3RV20214EA15	Siemens	Circuit Breakers MSP S0 27-32A AUX 1NO 1NC SCREW Learn More about Siemens 3rv2 circuit breakers	Datasheet	7In Stock	$554.70 $462.23 $425.89	Min.: 1 Mult.: 1
Circuit Breakers MSP S2 CLASS 10 42-52A SCREW 3RV20314WA10 Siemens 1: $657.60 7In Stock	Mfr. Part No. 3RV20314WA10 Mouser Part No 982-3RV20314WA10	Siemens	Circuit Breakers MSP S2 CLASS 10 42-52A SCREW Learn More about Siemens 3rv2 circuit breakers	Datasheet	7In Stock	$657.60 $580.58 $501.68	Min.: 1 Mult.: 1
Triacs 25 Amp High Temperature High dvdt TRIAC-TO263 QV8025NH4TP Littelfuse 1: $8.80 984In Stock	Mfr. Part No. QV8025NH4TP Mouser Part No 576-QV8025NH4TP	Littelfuse	Triacs 25 Amp High Temperature High dvdt TRIAC-TO263 Learn More about Littelfuse qvxx25xhx alternistor triacs	Datasheet	984In Stock	$8.80 $6.00 $4.41 $4.18	Min.: 1 Mult.: 1
Triacs 25 Amp High Temperature High dvdt TRIAC-TO220AB QV8025RH5TP Littelfuse 1: $9.06 989In Stock	Mfr. Part No. QV8025RH5TP Mouser Part No 576-QV8025RH5TP	Littelfuse	Triacs 25 Amp High Temperature High dvdt TRIAC-TO220AB Learn More about Littelfuse qvxx25xhx alternistor triacs	Datasheet	989In Stock	$9.06 $6.19 $4.56 $4.34	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: $1.24 3,192In Stock	Mfr. Part No. T15B22AHM3/I Mouser Part No 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 $1.24 $0.573 $0.487 $0.393 Reel $0.335 View $0.365 $0.298 $0.297 $0.251	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: $1.10 1,537In Stock	Mfr. Part No. GDT25-42-S1-RP Mouser Part No 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 $1.10 $0.993 $0.836 $0.772 Reel $0.544 View $0.694 $0.64 $0.526 MouseReel Available	Min.: 1 Mult.: 1 : 1,500
Industrial Surge Protectors TLP410UCUFOAM TLP410UCUFOAM Tripp Lite Restricted Availability	Mfr. Part No. TLP410UCUFOAM Mouser Part No 545-TLP410UCUFOAM	Tripp Lite	Industrial Surge Protectors TLP410UCUFOAM Mouser does not presently sell this product in your region.	Datasheet			Restricted Availability
ESD Protection Diodes / TVS Diodes 400W,15V 5%,UNIDIR,SMA TVS SMAJ15AHM3_A/H Vishay Semiconductors 1: $0.82 8,815In Stock	Mfr. Part No. SMAJ15AHM3_A/H Mouser Part No 78-SMAJ15AHM3_A/H	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,15V 5%,UNIDIR,SMA TVS	Datasheet	8,815In Stock	Cut Tape $0.82 $0.366 $0.322 $0.244 Reel $0.179 View $0.20 $0.154 $0.128	Min.: 1 Mult.: 1 : 1,800
ESD Protection Diodes / TVS Diodes 1.5KW,18V 5%,UNIDIR,SMC TVS SMCJ18AHM3_A/H Vishay Semiconductors 1: $1.37 2,392In Stock	Mfr. Part No. SMCJ18AHM3_A/H Mouser Part No 78-SMCJ18AHM3_A/H	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 1.5KW,18V 5%,UNIDIR,SMC TVS	Datasheet	2,392In Stock	Cut Tape $1.37 $0.861 $0.564 $0.436 Reel $0.368 View $0.351 $0.331	Min.: 1 Mult.: 1 : 850
NTC (Negative Temperature Coefficient) Thermistors NCU15XW152E60RC Murata Electronics 1: $0.13 9,605In Stock	Mfr. Part No. NCU15XW152E60RC Mouser Part No 81-NCU15XW152E60RC	Murata Electronics	NTC (Negative Temperature Coefficient) Thermistors Learn More about Murata Electronics murata ncu ntc thermistors	Datasheet	9,605In Stock	Cut Tape $0.13 $0.112 $0.099 $0.081 Reel $0.057 View $0.071 $0.068 $0.061 $0.053 MouseReel Available	Min.: 1 Mult.: 1 : 10,000
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 32In 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	32In 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 1,072In 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	1,072In 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
NTC (Negative Temperature Coefficient) Thermistors 50kOhm 3% Lug Term B25/50:3950K+-3% NTCGP3UH503HCZCCA TDK 1: $6.67 1,000In Stock	Mfr. Part No. NTCGP3UH503HCZCCA Mouser Part No 810-NTCGP3UH503HCZCC	TDK	NTC (Negative Temperature Coefficient) Thermistors 50kOhm 3% Lug Term B25/50:3950K+-3% Learn More about TDK ntcgp temperature sensors	Datasheet	1,000In Stock	$6.67 $6.01 $5.77 $5.47 View $5.27 $5.09 $4.72 $4.57	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NTC Thermistor 0603 4K7 J60 B-3650 B57301V2472J60 TDK 1: $0.39 11,747In Stock 8,000Expected 17/11/2026	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 17/11/2026	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 THQB MCB 10KA 3P 240V THQB32020 ABB 1: $987.01 3In Stock New At Mouser	Mfr. Part No. THQB32020 Mouser Part No 894-THQB32020 New At Mouser	ABB	Circuit Breakers THQB MCB 10KA 3P 240V	Datasheet	3In Stock	$987.01 $606.05	Min.: 1 Mult.: 1
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 Breaker Accessories CIRCUIT BREAKER OF WIRE HARNESS S434500 Schneider Electric 1: $543.92 4In Stock New At Mouser	Mfr. Part No. S434500 Mouser Part No 996-S434500 New At Mouser	Schneider Electric	Circuit Breaker Accessories CIRCUIT BREAKER OF WIRE HARNESS	Datasheet	4In Stock	$543.92	Min.: 1 Mult.: 1
Gas Discharge Tubes - GDTs / Gas Plasma Arrestors NextGen HV GDT 8 mm 1100 V GDT28H-110-B Bourns 1: $2.20 198In Stock	Mfr. Part No. GDT28H-110-B Mouser Part No 652-GDT28H-110-B	Bourns	Gas Discharge Tubes - GDTs / Gas Plasma Arrestors NextGen HV GDT 8 mm 1100 V Learn More about Bourns gdt212e gdt216e gdt220e gdt225e gdts	Datasheet	198In Stock	$2.20 $1.88 $1.51 $1.29 View $1.15 $1.04 $1.00 $0.958 $0.929	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 400W,45V 5%,BIDIR,SMA TVS SMAJ45CAHE3_A/H Vishay Semiconductors 1: $0.80 8,980In Stock	Mfr. Part No. SMAJ45CAHE3_A/H Mouser Part No 78-SMAJ45CAHE3_A/H	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,45V 5%,BIDIR,SMA TVS	Datasheet	8,980In Stock	Cut Tape $0.80 $0.497 $0.325 $0.245 Reel $0.203 View $0.223 $0.198 $0.157	Min.: 1 Mult.: 1 : 1,800

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Circuit Protection

Types of Circuit Protection