.hide-partial { max-height: none; } .show-more { display: none; }

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.
More...

Please view our selection of circuit protection devices below.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Circuit Protection

List Images

Results: 362.183

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

Filter by

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

Surge Protection Accessories Hardware Kit, 108-1118B

9100-0453-A
PolyPhaser
1: 24,22 €
28In 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

28In Stock

24,22 €

20,55 €

19,63 €

17,55 €

Min.: 1
Mult.: 1

Connectorised Surge Protectors TNC F/F Coaxial RF Surge Protector, DC - 50MHz, 1W, IP67, 15 V Max., 1mJ, 20kA, Hybrid, Bracket Down, Hole Mount

AGXZ+15TFTF-A
PolyPhaser
1: 140,64 €
9In Stock
New Product

Mfr. Part No.
AGXZ+15TFTF-A

Mouser Part No
44-AGXZ+15TFTF-A

New Product

PolyPhaser

Connectorised Surge Protectors TNC F/F Coaxial RF Surge Protector, DC - 50MHz, 1W, IP67, 15 V Max., 1mJ, 20kA, Hybrid, Bracket Down, Hole Mount

Learn More

Datasheet

9In Stock

140,64 €

133,40 €

Min.: 1
Mult.: 1

Connectorised Surge Protectors Type N F/F Coaxial RF Surge Protector, 400MHz - 1.2GHz, 300W, IP67, 36 V Max., 1.5mJ, 20kA, Hybrid, Bracket Down, Hole Mount

CGXZ+36NFNF-A
PolyPhaser
1: 146,57 €
8In Stock
36On Order
New Product

Mfr. Part No.
CGXZ+36NFNF-A

Mouser Part No
44-CGXZ+36NFNF-A

New Product

PolyPhaser

Connectorised Surge Protectors Type N F/F Coaxial RF Surge Protector, 400MHz - 1.2GHz, 300W, IP67, 36 V Max., 1.5mJ, 20kA, Hybrid, Bracket Down, Hole Mount

Learn More

Datasheet

8In Stock

36On Order

146,57 €

139,02 €

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

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 €
5In Stock
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

Datasheet

5In Stock

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 €
3In Stock
4Expected 8/24/2026
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

Datasheet

3In Stock

4Expected 8/24/2026

111,03 €

105,32 €

Min.: 1
Mult.: 1

Connectorised Surge Protectors UHF F/F Bulkhead Coaxial RF Surge Protector, 1.5MHz - 700MHz, DC Block, 3kW, 20mJ, 50kA, Blocking Cap, Hole Mount

IS-B50HU-C0
PolyPhaser
1: 119,92 €
11In Stock
New Product

Mfr. Part No.
IS-B50HU-C0

Mouser Part No
44-IS-B50HU-C0

New Product

PolyPhaser

Connectorised Surge Protectors UHF F/F Bulkhead Coaxial RF Surge Protector, 1.5MHz - 700MHz, DC Block, 3kW, 20mJ, 50kA, Blocking Cap, Hole Mount

Learn More

Datasheet

11In Stock

119,92 €

113,74 €

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 €
5In Stock
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

Datasheet

5In Stock

97,70 €

92,67 €

Min.: 1
Mult.: 1

Circuit Breaker Accessories 508, DM, 20A, Distribution Module, Load, ATEX

PM12-T01-00-LOAD-20A-E
E-T-A
1: 33,48 €
7In Stock
New Product

Mfr. Part No.
PM12-T01-00-LOAD-20A-E

Mouser Part No
457-PM12T100LOAD2AE

New Product

E-T-A

Circuit Breaker Accessories 508, DM, 20A, Distribution Module, Load, ATEX

Datasheet

7In Stock

33,48 €

25,83 €

25,44 €

24,00 €

Min.: 1
Mult.: 1

Circuit Breakers 508,DM,24VDC,CL,20A,ATX

REX22D-TA1-100-DC24V-20A-E
E-T-A
1: 75,30 €
11In Stock
New Product

Mfr. Part No.
REX22D-TA1-100-DC24V-20A-E

Mouser Part No
457-REX22DTA120E

New Product

E-T-A

Circuit Breakers 508,DM,24VDC,CL,20A,ATX

Learn More

Datasheet

11In Stock

75,30 €

61,98 €

61,07 €

57,60 €

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors ESA PROBE-RTD PT1000 1000mm ENG MODEL

10219128-01
TE Connectivity
1: 428,44 €
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

Datasheet

1In Stock

428,44 €

391,70 €

360,81 €

338,29 €

View

Min.: 1
Mult.: 1

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

Min.: 1
Mult.: 1

: 10.000

NTC (Negative Temperature Coefficient) Thermistors SMD NTC Thermistor 0603 10kOhm 1% B-3624 soft

B57343V6103F360
TDK
1: 0,525 €
2.800In Stock
New Product

Mfr. Part No.
B57343V6103F360

Mouser Part No
871-B57343V6103F360

New Product

TDK

NTC (Negative Temperature Coefficient) Thermistors SMD NTC Thermistor 0603 10kOhm 1% B-3624 soft

Datasheet

2.800In Stock

Cut Tape

0,525 €

0,409 €

0,352 €

0,289 €

Reel

0,218 €

View

MouseReel Available

Min.: 1
Mult.: 1

: 4.000

Industrial & Electrical Fuses Specialty Fuses POWR-SPEED SQB ESR 1500VDC 3XL BOLT 315A

ESR3XLUB0315XI
Littelfuse
1: 502,64 €
2In Stock
1Expected 9/3/2026
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

Datasheet

2In Stock

1Expected 9/3/2026

502,64 €

412,72 €

375,68 €

Quote

Min.: 1
Mult.: 1

Triacs 0.8A 600V Sens SOT-89

LX809MBRP
Littelfuse
1: 1,17 €
700In 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

Datasheet

700In Stock

200On Order

Cut Tape

1,17 €

0,72 €

0,473 €

0,377 €

Reel

0,32 €

View

MouseReel Available

Min.: 1
Mult.: 1

: 1.000

Industrial Surge Protectors SFP2-1S-1-20A-230AC-UT

1292605
Phoenix Contact
1: 220,56 €
2In Stock
24On Order
New Product

Mfr. Part No.
1292605

Mouser Part No
651-1292605

New Product

Phoenix Contact

Industrial Surge Protectors SFP2-1S-1-20A-230AC-UT

Learn More

Datasheet

2In Stock

24On Order

220,56 €

Min.: 1
Mult.: 1

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 550A

PF-1NH100E550B2
Bourns
1: 313,70 €
4In Stock
New Product

Mfr. Part No.
PF-1NH100E550B2

Mouser Part No
652-PF-1NH100E550B2

New Product

Bourns

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 550A

Learn More

Datasheet

4In Stock

313,70 €

249,44 €

229,87 €

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

Datasheet

1In Stock

328,67 €

263,75 €

261,36 €

View

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors Assembly Probe KTM1 Type R25=10kOhms 2% Temp. Range -30 to 100

KTM-41-KTM1
Shibaura Electronics
1: 5,21 €
100In Stock
New Product

Mfr. Part No.
KTM-41-KTM1

Mouser Part No
603-KTM-41-KTM1

New Product

Shibaura Electronics

NTC (Negative Temperature Coefficient) Thermistors Assembly Probe KTM1 Type R25=10kOhms 2% Temp. Range -30 to 100

Learn More

Datasheet

100In Stock

5,21 €

4,75 €

4,03 €

3,86 €

View

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes DIO TVS VWM 03V 400W BIDIR SOD323 AUTO GRADE

CDSOD323-T03SC-Q
Bourns
1: 1,03 €
2.029In Stock
New Product

Mfr. Part No.
CDSOD323-T03SC-Q

Mouser Part No
652-CDSOD323-T03SC-Q

New Product

Bourns

ESD Protection Diodes / TVS Diodes DIO TVS VWM 03V 400W BIDIR SOD323 AUTO GRADE

Learn More

Datasheet

2.029In Stock

Cut Tape

1,03 €

0,645 €

0,424 €

0,33 €

Reel

0,255 €

View

MouseReel Available

Min.: 1
Mult.: 1

: 3.000

ESD Protection Diodes / TVS Diodes DIO TVS VWM 36V 400W BIDIR SOD323 AUTO GRADE

CDSOD323-T36SC-Q
Bourns
1: 1,03 €
2.099In Stock
New Product

Mfr. Part No.
CDSOD323-T36SC-Q

Mouser Part No
652-CDSOD323-T36SC-Q

New Product

Bourns

ESD Protection Diodes / TVS Diodes DIO TVS VWM 36V 400W BIDIR SOD323 AUTO GRADE

Learn More

Datasheet

2.099In Stock

Cut Tape

1,03 €

0,645 €

0,424 €

0,33 €

Reel

0,255 €

View

MouseReel Available

Min.: 1
Mult.: 1

: 3.000

ESD Protection Diodes / TVS Diodes 18 V, 0.6 pF, 10 kV

AQ3118-02JTG
Littelfuse
1: 1,07 €
2.663In 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

Datasheet

2.663In Stock

Cut Tape

1,07 €

0,67 €

0,44 €

0,343 €

Reel

0,237 €

View

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 €
2.312In 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

2.312In Stock

Cut Tape

0,516 €

0,268 €

0,20 €

0,151 €

Reel

0,081 €

0,077 €

Min.: 1
Mult.: 1

: 3.000

Circuit Protection

Types of Circuit Protection

Customer Service Office

Company

Resources

Support