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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 (EUR) Filter the results in the table by unit price based on your quantity.	Qty.
Surge Protection Accessories Hardware Kit, 108-1118B 9100-0453-A PolyPhaser 1: 24,22 € 26In Stock New Product	Mfr. Part No. 9100-0453-A Mouser Part No 44-9100-0453-A New Product	PolyPhaser	Surge Protection Accessories Hardware Kit, 108-1118B	Datasheet	26In Stock	24,22 € 20,55 € 19,63 € 17,55 €	Min.: 1 Mult.: 1
Connectorised Surge Protectors Type N M/F Coaxial RF Surge Protector, 400MHz - 1.2GHz, 300W, IP67, 36 V Max., 1mJ, 20kA, Hybrid, Bracket Down, Hole Mount CGXZ+36NMNF-A PolyPhaser 1: 161,38 € 7In Stock New Product	Mfr. Part No. CGXZ+36NMNF-A Mouser Part No 44-CGXZ+36NMNF-A New Product	PolyPhaser	Connectorised Surge Protectors Type N M/F Coaxial RF Surge Protector, 400MHz - 1.2GHz, 300W, IP67, 36 V Max., 1mJ, 20kA, Hybrid, Bracket Down, Hole Mount Learn More about PolyPhaser 400mhz 2 5ghz surge protectors	Datasheet	7In Stock	161,38 € 153,07 €	Min.: 1 Mult.: 1
Connectorised Surge Protectors 7/16 M/F Coaxial RF Surge Protector, 800MHz - 2.5GHz, 500W, IP67, 48 V Max., 146uJ, 20kA, Hybrid, Bracket Down, Hole Mount DGXH+48DMDF-A PolyPhaser 1: 174,99 € 3In Stock 2Expected 10/21/2026 New Product	Mfr. Part No. DGXH+48DMDF-A Mouser Part No 44-DGXH+48DMDF-A New Product	PolyPhaser	Connectorised Surge Protectors 7/16 M/F Coaxial RF Surge Protector, 800MHz - 2.5GHz, 500W, IP67, 48 V Max., 146uJ, 20kA, Hybrid, Bracket Down, Hole Mount Learn More about PolyPhaser gx surge protectors	Datasheet	3In Stock 2Expected 10/21/2026	174,99 € 167,59 €	Min.: 1 Mult.: 1
Connectorised Surge Protectors Type N M/F Bulkhead Coaxial RF Surge Protector, 550MHz - 2700MHz, DC Pass, 6V, IP67, 20kA, Hybrid, Bracket Up, Hole Mount DGXR+06NMNF-Z PolyPhaser 1: 137,69 € 5In Stock New Product	Mfr. Part No. DGXR+06NMNF-Z Mouser Part No 44-DGXR+06NMNF-Z New Product	PolyPhaser	Connectorised Surge Protectors Type N M/F Bulkhead Coaxial RF Surge Protector, 550MHz - 2700MHz, DC Pass, 6V, IP67, 20kA, Hybrid, Bracket Up, Hole Mount	Datasheet	5In Stock	137,69 € 130,59 €	Min.: 1 Mult.: 1
Connectorised Surge Protectors TNC M/F Bulkhead Coaxial RF Surge Protector, 700MHz - 2.5GHz, DC Block, 500W, IP67, .5uJ, 18kA, Filter DSXL-T-MA PolyPhaser 1: 257,75 € 2In Stock New Product	Mfr. Part No. DSXL-T-MA Mouser Part No 44-DSXL-T-MA New Product	PolyPhaser	Connectorised Surge Protectors TNC M/F Bulkhead Coaxial RF Surge Protector, 700MHz - 2.5GHz, DC Block, 500W, IP67, .5uJ, 18kA, Filter	Datasheet	2In Stock	257,75 € 246,85 €	Min.: 1 Mult.: 1
Connectorised Surge Protectors Type N/SMA F/F Bulkhead Coaxial RF Surge Protector, DC - 7GHz, 90W, IP67, 9 V Max., 5mJ, 20kA, Gas Discharge Tube GT-NFSF-AL PolyPhaser 1: 111,03 € 4In Stock 7On Order New Product	Mfr. Part No. GT-NFSF-AL Mouser Part No 44-GT-NFSF-AL New Product	PolyPhaser	Connectorised Surge Protectors Type N/SMA F/F Bulkhead Coaxial RF Surge Protector, DC - 7GHz, 90W, IP67, 9 V Max., 5mJ, 20kA, Gas Discharge Tube Learn More about PolyPhaser dc 7ghz rf coaxial surge protectors	Datasheet	4In Stock 7On Order On Order Ship Dates Mfr. No: GT-NFSF-AL Stock: 4 Can Dispatch Immediately On Order: 4 Expected 10/21/2026 3 Expected 10/22/2026 Factory Lead Time: 5 Weeks	111,03 € 105,32 €	Min.: 1 Mult.: 1
Connectorised Surge Protectors Type N M/F Bulkhead Coaxial RF Surge Protector, 10MHz - 1GHz, DC Block, 1.5kW, 3.5mJ, 20kA, Blocking Cap, Hole Mount IS-B50LN-C2-MA PolyPhaser 1: 97,70 € 4In Stock 2Expected 10/14/2026 New Product	Mfr. Part No. IS-B50LN-C2-MA Mouser Part No 44-IS-B50LN-C2-MA New Product	PolyPhaser	Connectorised Surge Protectors Type N M/F Bulkhead Coaxial RF Surge Protector, 10MHz - 1GHz, DC Block, 1.5kW, 3.5mJ, 20kA, Blocking Cap, Hole Mount Learn More about PolyPhaser is b50 surge protectors	Datasheet	4In Stock 2Expected 10/14/2026	97,70 € 92,67 €	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors ESA PROBE-RTD PT1000 1000mm ENG MODEL 10219128-01 TE Connectivity 1: 428,62 € 1In Stock New Product	Mfr. Part No. 10219128-01 Mouser Part No 571-10219128-01 New Product	TE Connectivity	NTC (Negative Temperature Coefficient) Thermistors ESA PROBE-RTD PT1000 1000mm ENG MODEL Learn More about TE Connectivity te surface mount temperature sensors	Datasheet	1In Stock	428,62 € 343,89 € 340,78 € View Quote	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 400W,17V5%,SMFBIDIRTVS 4SMF17CA-M3/I Vishay Semiconductors 1: 0,421 € 7.840In Stock New Product	Mfr. Part No. 4SMF17CA-M3/I Mouser Part No 78-4SMF17CA-M3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,17V5%,SMFBIDIRTVS	Datasheet	7.840In Stock	Cut Tape 0,421 € 0,291 € 0,143 € 0,119 € Reel 0,054 € View 0,083 € 0,072 € 0,065 € 0,05 €	Min.: 1 Mult.: 1 : 10.000
ESD Protection Diodes / TVS Diodes 400W,18V5%,SMFBIDIRTVS 4SMF18CA-M3/I Vishay Semiconductors 1: 0,421 € 6.678In Stock New Product	Mfr. Part No. 4SMF18CA-M3/I Mouser Part No 78-4SMF18CA-M3/I New Product	Vishay Semiconductors	ESD Protection Diodes / TVS Diodes 400W,18V5%,SMFBIDIRTVS	Datasheet	6.678In Stock	Cut Tape 0,421 € 0,291 € 0,143 € 0,119 € Reel 0,054 € View 0,083 € 0,072 € 0,065 € 0,05 €	Min.: 1 Mult.: 1 : 10.000
ESD Protection Diodes / TVS Diodes TVS 10KA RATED 550V BI AXIAL AK10-550C-FL Littelfuse 1: 142,74 € 1In Stock 56Expected 1/29/2027 New Product	Mfr. Part No. AK10-550C-FL Mouser Part No 576-AK10-550C-FL New Product	Littelfuse	ESD Protection Diodes / TVS Diodes TVS 10KA RATED 550V BI AXIAL Learn More about Littelfuse ak fl tvs diodes	Datasheet	1In Stock 56Expected 1/29/2027	142,74 € 130,32 €	Min.: 1 Mult.: 1
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 315A ESR3XLUB0315XI Littelfuse 1: 502,64 € 2In Stock 1Expected 10/21/2026 New Product	Mfr. Part No. ESR3XLUB0315XI Mouser Part No 576-ESR3XLUB0315XI New Product	Littelfuse	Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 315A Learn More about Littelfuse esr high speed square body fuses	Datasheet	2In Stock 1Expected 10/21/2026	502,64 € 412,72 € 375,68 € Quote Quote	Min.: 1 Mult.: 1
Triacs 0.8A 600V Sens SOT-89 LX809MBRP Littelfuse 1: 1,17 € 698In Stock 200On Order New Product	Mfr. Part No. LX809MBRP Mouser Part No 576-LX809MBRP New Product	Littelfuse	Triacs 0.8A 600V Sens SOT-89 Learn More about Littelfuse lx8 thyristors	Datasheet	698In Stock 200On Order	Cut Tape 1,17 € 0,72 € 0,473 € 0,377 € Reel 0,32 € View 0,287 € 0,257 € 0,247 € 0,217 € MouseReel Available	Min.: 1 Mult.: 1 : 1.000
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL DIN 315A ESR3XLDB0315XI Littelfuse 1: 498,58 € 3In Stock New Product	Mfr. Part No. ESR3XLDB0315XI Mouser Part No 576-ESR3XLDB0315XI New Product	Littelfuse	Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL DIN 315A Learn More about Littelfuse esr high speed square body fuses	Datasheet	3In Stock	498,58 € 409,39 € 372,65 € Quote Quote	Min.: 1 Mult.: 1
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 500A ESR3XLUB0500XI Littelfuse 1: 523,31 € 3In Stock New Product	Mfr. Part No. ESR3XLUB0500XI Mouser Part No 576-ESR3XLUB0500XI New Product	Littelfuse	Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 500A Learn More about Littelfuse esr high speed square body fuses	Datasheet	3In Stock	523,31 € 445,42 € 399,37 € Quote Quote	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 4V, 0.55pF, 20A, SOD882 SC4340L-01ETG Littelfuse 1: 0,533 € 5.291In Stock New Product	Mfr. Part No. SC4340L-01ETG Mouser Part No 576-SC4340L-01ETG New Product	Littelfuse	ESD Protection Diodes / TVS Diodes 4V, 0.55pF, 20A, SOD882 Learn More about Littelfuse sx4340l tvs diode arrays		5.291In Stock	Cut Tape 0,533 € 0,323 € 0,206 € 0,171 € Reel 0,095 € View 0,139 € 0,119 € 0,114 € 0,093 €	Min.: 1 Mult.: 1 : 10.000
ESD Protection Diodes / TVS Diodes "20 V, 50pF, 5A," SP1120-01WTG Littelfuse 1: 0,525 € 8.583In Stock New Product	Mfr. Part No. SP1120-01WTG Mouser Part No 576-SP1120-01WTG New Product	Littelfuse	ESD Protection Diodes / TVS Diodes "20 V, 50pF, 5A," Learn More about Littelfuse sp1120 01wtg tvs diodes		8.583In Stock	Cut Tape 0,525 € 0,271 € 0,202 € 0,153 € Reel 0,08 € View 0,144 € 0,077 €	Min.: 1 Mult.: 1 : 10.000
ESD Protection Diodes / TVS Diodes 4V, 0.45pF, 20A, Flipchip SP4340L-01WTG Littelfuse 1: 0,576 € 8.557In Stock New Product	Mfr. Part No. SP4340L-01WTG Mouser Part No 576-SP4340L-01WTG New Product	Littelfuse	ESD Protection Diodes / TVS Diodes 4V, 0.45pF, 20A, Flipchip Learn More about Littelfuse sx4340l tvs diode arrays		8.557In Stock	Cut Tape 0,576 € 0,302 € 0,225 € 0,171 € View Reel 0,097 € 0,17 € 0,163 € 0,097 €	Min.: 1 Mult.: 1 : 10.000
Surge Protection Accessories Supplemental Hardware and Materials to for Low Inductance Grounding CU-SPGP PolyPhaser 1: 528,81 € 1In Stock 6On Order New Product	Mfr. Part No. CU-SPGP Mouser Part No 44-CU-SPGP New Product	PolyPhaser	Surge Protection Accessories Supplemental Hardware and Materials to for Low Inductance Grounding Learn More about PolyPhaser surge protector accessories	Datasheet	1In Stock 6On Order On Order Ship Dates Mfr. No: CU-SPGP Stock: 1 Can Dispatch Immediately On Order: 2 Pending 4 Expected 1/29/2027 Factory Lead Time: 20 Weeks	528,81 €	Min.: 1 Mult.: 1
ESD Protection Diodes / TVS Diodes 18 V, 0.6 pF, 10 kV AQ3118-02JTG Littelfuse 1: 1,07 € 2.654In Stock New Product	Mfr. Part No. AQ3118-02JTG Mouser Part No 576-AQ3118-02JTG New Product	Littelfuse	ESD Protection Diodes / TVS Diodes 18 V, 0.6 pF, 10 kV Learn More about Littelfuse aq3118 02jtg tvs diode array	Datasheet	2.654In Stock	Cut Tape 1,07 € 0,67 € 0,44 € 0,343 € Reel 0,237 € View 0,31 € 0,235 € MouseReel Available	Min.: 1 Mult.: 1 : 3.000
ESD Protection Diodes / TVS Diodes TVS SURF MT DO214AA - SMBJ85CA CR T&R SMBJ85CA-E Littelfuse 1: 0,516 € 2.305In Stock New Product	Mfr. Part No. SMBJ85CA-E Mouser Part No 576-SMBJ85CAE New Product	Littelfuse	ESD Protection Diodes / TVS Diodes TVS SURF MT DO214AA - SMBJ85CA CR T&R	Datasheet	2.305In Stock	Cut Tape 0,516 € 0,268 € 0,20 € 0,151 € Reel 0,081 € 0,077 €	Min.: 1 Mult.: 1 : 3.000
Varistors MOV 510V 10mm 2.5KA 10% Silcn Coatng Strt Leads AEC-Q200 511KH10-AT YAGEO 1: 0,49 € 2.560In Stock 400On Order New Product	Mfr. Part No. 511KH10-AT Mouser Part No 603-511KH10-AT New Product	YAGEO	Varistors MOV 510V 10mm 2.5KA 10% Silcn Coatng Strt Leads AEC-Q200 Learn More about YAGEO kh at metal oxide varistors	Datasheet	2.560In Stock 400On Order	0,49 € 0,304 € 0,263 € 0,236 € View 0,224 € 0,219 € 0,205 € 0,171 € 0,17 €	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors Glass Encapsulated NTC Thermistor, Probe, Surface Mount 15K4 20012616-00 TE Connectivity 1: 328,67 € 1In Stock New Product	Mfr. Part No. 20012616-00 Mouser Part No 571-20012616-00 New Product	TE Connectivity	NTC (Negative Temperature Coefficient) Thermistors Glass Encapsulated NTC Thermistor, Probe, Surface Mount 15K4 Learn More about TE Connectivity te surface mount temperature sensors	Datasheet	1In Stock	328,67 € 263,75 € 261,36 € View Quote	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors SMD NTC Thermistor 1206 5kOhm 3% B-3455 HT Series B57621C5502H062 TDK 1: 0,705 € 2.800In Stock New Product	Mfr. Part No. B57621C5502H062 Mouser Part No 871-B57621C5502H062 New Product	TDK	NTC (Negative Temperature Coefficient) Thermistors SMD NTC Thermistor 1206 5kOhm 3% B-3455 HT Series	Datasheet	2.800In Stock	Cut Tape 0,705 € 0,664 € 0,541 € 0,508 € View Reel 0,367 € 0,495 € 0,433 € 0,416 € 0,367 € MouseReel Available	Min.: 1 Mult.: 1 : 4.000
Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 250A ESR3XLUB0250XI Littelfuse 1: 449,28 € 3In Stock New Product	Mfr. Part No. ESR3XLUB0250XI Mouser Part No 576-ESR3XLUB0250XI New Product	Littelfuse	Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 250A Learn More about Littelfuse esr high speed square body fuses	Datasheet	3In Stock	449,28 € 368,91 € 335,81 € Quote Quote	Min.: 1 Mult.: 1

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