Circuit Protection

Circuit Protection
Circuit Protection devices and components are available at Mouser Electronics from industry leading manufacturers. Mouser is an authorized distributor for many circuit protection manufacturers including Analog Devices, Bourns, Eaton, Phoenix Contact, TDK EPCOS, Littelfuse, Vishay, & more. 
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Please view our selection of circuit protection devices below.
Results: 359,447
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 Mfr.
Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS
CTS Electronic Components NTC (Negative Temperature Coefficient) Thermistors 2.186K +/-1% Glass Bead, B3390,300C
Datasheet
500In Stock
Min.: 1
Mult.: 1

Schurter Industrial & Electrical Fuses APO Rated current: 400A, Rated voltage: 1000VDC, Trigger Type: active, Mounting: Bolt-on A, ConType: AK2-1
Datasheet
14In Stock
Min.: 1
Mult.: 1

CTS Electronic Components NTC (Negative Temperature Coefficient) Thermistors 10k, DO-35 glass NTC, B3977
Datasheet
497In Stock
Min.: 1
Mult.: 1

Littelfuse Automotive Fuses FUSE - ZCASE MEGA 32V M10 80A 480 PC
Datasheet
339In Stock
Min.: 1
Mult.: 1
Vishay Semiconductors ESD Protection Diodes / TVS Diodes ESD PROTECTION DIODE SOT23
Datasheet
29,539In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

CTS Electronic Components NTC (Negative Temperature Coefficient) Thermistors 30K, +/-0.2C: 0C-70C, B3942, uninsulated wire
Datasheet
249In Stock
251Expected 12/11/2026
Min.: 1
Mult.: 1

CTS Electronic Components NTC (Negative Temperature Coefficient) Thermistors 20K, +/-0.2C: 0C-70C, B4260, Teflon insulated wire
Datasheet
386In Stock
114Expected 12/11/2026
Min.: 1
Mult.: 1

Comchip Technology ESD Protection Diodes / TVS Diodes DIODE ESD UNI-DIRECTIONAL 5VWM 5A SOD-723
Datasheet
5,193In Stock
Min.: 1
Mult.: 1
: 8,000

Eaton Electronics ESD Protection Diodes / TVS Diodes AUTO TVS DIODE, SMAJE FAMILY, 33Vdc, Uni
Datasheet
2,611In Stock
Min.: 1
Mult.: 1
: 5,000
Carling Technologies Circuit Breakers C Series 120A DC Hydraulic/Magnetic Circuit Breaker, UL489A, Black Handle
Datasheet
8In Stock
Min.: 1
Mult.: 1
Eaton Electrical JT3250FA
Eaton Electrical Circuit Breaker Accessories 250A 3P Thermal Mag Fixed/Adj Trip Unit 1In Stock
Min.: 1
Mult.: 1
Comchip Technology ESD Protection Diodes / TVS Diodes DIODE ESD BI-DIRECTIONAL 5VWM 5A SOD-723
Datasheet
4,352In Stock
Min.: 1
Mult.: 1
: 8,000

CTS Electronic Components NTC (Negative Temperature Coefficient) Thermistors 3K, +/-0.2C: 0C-70C, B3977, uninsulated wire
Datasheet
500In Stock
Min.: 1
Mult.: 1

CTS Electronic Components NTC (Negative Temperature Coefficient) Thermistors 50K, +/-0.2C: 0C-70C, B4260, Teflon insulated wire
Datasheet
250In Stock
Min.: 1
Mult.: 1

Bourns Thermal Cut-offs TCO, High Current, SMD, 90C, Self Hold AEC-Q200
Datasheet
15,224In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

Eaton Electrical LT340032
Eaton Electrical Circuit Breaker Accessories LG 3 Pole 400A LSI Electronic Trip Unit 1In Stock
Min.: 1
Mult.: 1
Eaton Electrical Circuit Breakers BR 30A/2 Pole Com. Trip 120/240V 22K
Datasheet
3In Stock
Min.: 1
Mult.: 1
Eaton Electrical Circuit Breakers PDG2,3P,20A,25KA/480V,FXFXTMTU
Datasheet
2In Stock
Min.: 1
Mult.: 1
Eaton Electrical Circuit Breakers PDG2, 50A, MCP, STD CALIBRATION-HMCPS
Datasheet
1In Stock
Min.: 1
Mult.: 1
Vishay / BC Components NTC (Negative Temperature Coefficient) Thermistors NTC Mini Ni 0.4 ld 10K 1% blk 0.4e/1e A
Datasheet
402In Stock
1,500Expected 01/09/2026
Min.: 1
Mult.: 1

Eaton Electrical Circuit Breakers Type CH Breaker 40A/3 Pole 240V 10K
Datasheet
3In Stock
Min.: 1
Mult.: 1
Eaton Electrical Circuit Breakers CH GFCI BREAKER, 30A, PIGTAIL, 10KAIC 1In Stock
Min.: 1
Mult.: 1
Eaton Electrical Circuit Breakers FAZ UL 1077 2P 2.5A D CURVE
Datasheet
1In Stock
Min.: 1
Mult.: 1
Eaton Electrical Circuit Breakers HFD-DC BREAKER - LINE & LOAD TERMINALS
Datasheet
1In Stock
Min.: 1
Mult.: 1
Eaton Electrical Circuit Breakers PDG2,3P,35A,25KA/480V,FXFXTMTU
Datasheet
2In Stock
Min.: 1
Mult.: 1