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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.

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Types of Circuit Protection

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Results: 361,007

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Part #

Connectorised Surge Protectors Type N F/M Coaxial RF Surge Protector, 800MHz - 2.5GHz, 300W, IP67, 6 V Max., 175uJ, 20kA, Hybrid, Bracket Down, Hole Mount

DGXZ+06NFNM-A
PolyPhaser
1: $236.91
8In Stock
New Product

Mfr. Part No.
DGXZ+06NFNM-A

Mouser Part No
44-DGXZ+06NFNM-A

New Product

PolyPhaser

Connectorised Surge Protectors Type N F/M Coaxial RF Surge Protector, 800MHz - 2.5GHz, 300W, IP67, 6 V Max., 175uJ, 20kA, Hybrid, Bracket Down, Hole Mount

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Datasheet

8In Stock

$236.91

$224.71

Min.: 1
Mult.: 1

Connectorised Surge Protectors Type N F/F Coaxial RF Surge Protector, 800MHz - 2.5GHz, 300W, IP67, 60 V Max., 2.5mJ, 20kA, Hybrid, Bracket Down, Hole Mount

DGXZ-60NFNF-A
PolyPhaser
1: $267.49
4In Stock
New Product

Mfr. Part No.
DGXZ-60NFNF-A

Mouser Part No
44-DGXZ-60NFNF-A

New Product

PolyPhaser

Connectorised Surge Protectors Type N F/F Coaxial RF Surge Protector, 800MHz - 2.5GHz, 300W, IP67, 60 V Max., 2.5mJ, 20kA, Hybrid, Bracket Down, Hole Mount

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Datasheet

4In Stock

$267.49

$256.18

Min.: 1
Mult.: 1

Connectorised Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, DC - 3GHz, 40W, IP67, 60 V Max., 500uJ, 4kA, Gas Discharge Tube

DT-NFF
PolyPhaser
1: $107.84
7In Stock
5Expected 5/6/2026
New Product

Mfr. Part No.
DT-NFF

Mouser Part No
44-DT-NFF

New Product

PolyPhaser

Connectorised Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, DC - 3GHz, 40W, IP67, 60 V Max., 500uJ, 4kA, Gas Discharge Tube

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Datasheet

7In Stock

5Expected 5/6/2026

$107.84

$102.08

Min.: 1
Mult.: 1

Connectorised Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, DC - 6GHz, 1000W, IP67, 60 V Max., 2.5mJ, 20kA, Gas Discharge Tube

GTH-NFF-AL
PolyPhaser
1: $110.06
15In Stock
New Product

Mfr. Part No.
GTH-NFF-AL

Mouser Part No
44-GTH-NFF-AL

New Product

PolyPhaser

Connectorised Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, DC - 6GHz, 1000W, IP67, 60 V Max., 2.5mJ, 20kA, Gas Discharge Tube

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Datasheet

15In Stock

$110.06

$104.39

Min.: 1
Mult.: 1

Connectorised Surge Protectors HEMP Tested 7/16 F/M Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, 1000W, IP67, 100 V Max., 25mJ, 20kA, Filter, Low PIM

HT-RO-TSX-DCDFM
PolyPhaser
1: $357.40
4In Stock
New Product

Mfr. Part No.
HT-RO-TSX-DCDFM

Mouser Part No
44-HT-RO-TSX-DCDFM

New Product

PolyPhaser

Connectorised Surge Protectors HEMP Tested 7/16 F/M Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, 1000W, IP67, 100 V Max., 25mJ, 20kA, Filter, Low PIM

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Datasheet

4In Stock

$357.40

$342.27

Min.: 1
Mult.: 1

Connectorised Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 125MHz - 1GHz, DC Block, 500W, 800uJ, 20kA, Blocking Cap, Hole Mount

IS-B50HN-C2
PolyPhaser
1: $169.90
3In Stock
20Expected 12/6/2026
New Product

Mfr. Part No.
IS-B50HN-C2

Mouser Part No
44-IS-B50HN-C2

New Product

PolyPhaser

Connectorised Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 125MHz - 1GHz, DC Block, 500W, 800uJ, 20kA, Blocking Cap, Hole Mount

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Datasheet

3In Stock

20Expected 12/6/2026

$169.90

$161.14

Min.: 1
Mult.: 1

Connectorised Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, 125MHz - 1GHz, DC Block, 500W, 800uJ, 50kA, Blocking Cap, Hole Mount

IS-B50HN-C2-ME
PolyPhaser
1: $181.85
8In Stock
New Product

Mfr. Part No.
IS-B50HN-C2-ME

Mouser Part No
44-IS-B50HN-C2-ME

New Product

PolyPhaser

Connectorised Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, 125MHz - 1GHz, DC Block, 500W, 800uJ, 50kA, Blocking Cap, Hole Mount

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Datasheet

8In Stock

$181.85

$172.49

Min.: 1
Mult.: 1

Connectorised Surge Protectors UHF M/F Coaxial RF Surge Protector, 1.5MHz - 700MHz, DC Block, 2kW, 10mJ, 50kA, Blocking Cap, Bracket Up, Hole Mount

IS-B50LU-C0-MA
PolyPhaser
1: $174.67
4In Stock
New Product

Mfr. Part No.
IS-B50LU-C0-MA

Mouser Part No
44-IS-B50LU-C0-MA

New Product

PolyPhaser

Connectorised Surge Protectors UHF M/F Coaxial RF Surge Protector, 1.5MHz - 700MHz, DC Block, 2kW, 10mJ, 50kA, Blocking Cap, Bracket Up, Hole Mount

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Datasheet

4In Stock

$174.67

$165.67

Min.: 1
Mult.: 1

Connectorised Surge Protectors 7/16 DIN F/M Quarter Wave RF Protector, 555 MHz to 4.5GHz, Low PIM

QWP-DFDM-ER
PolyPhaser
1: $265.84
8In Stock
New Product

Mfr. Part No.
QWP-DFDM-ER

Mouser Part No
44-QWP-DFDM-ER

New Product

PolyPhaser

Connectorised Surge Protectors 7/16 DIN F/M Quarter Wave RF Protector, 555 MHz to 4.5GHz, Low PIM

Datasheet

8In Stock

$265.84

$252.15

Min.: 1
Mult.: 1

Circuit Breakers 508,DM,24VDC,CL,12A,ATX

REX22D-TA1-100-DC24V-12A-E
E-T-A
1: $121.71
5In Stock
124Expected 20/7/2026
New Product

Mfr. Part No.
REX22D-TA1-100-DC24V-12A-E

Mouser Part No
457-REX22DTA112E

New Product

E-T-A

Circuit Breakers 508,DM,24VDC,CL,12A,ATX

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Datasheet

5In Stock

124Expected 20/7/2026

$121.71

$100.18

$98.70

$93.10

Min.: 1
Mult.: 1

Circuit Breakers 508,DM,24VDC,CL,2-3-3.6,CL2,ATX

REX22D-TD2-100-DC24V-2A/3A/3,6A-CL2-E
E-T-A
1: $147.65
4In Stock
New Product

Mfr. Part No.
REX22D-TD2-100-DC24V-2A/3A/3,6A-CL2-E

Mouser Part No
457-REX22DTD22336CLE

New Product

E-T-A

Circuit Breakers 508,DM,24VDC,CL,2-3-3.6,CL2,ATX

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Datasheet

4In Stock

$147.65

$123.29

$114.58

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors ESA PROBE-RTD PT1000 3000mm ENG MODEL

10219128-03
TE Connectivity
1: $518.03
2In Stock
New Product

Mfr. Part No.
10219128-03

Mouser Part No
571-10219128-03

New Product

TE Connectivity

NTC (Negative Temperature Coefficient) Thermistors ESA PROBE-RTD PT1000 3000mm ENG MODEL

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Datasheet

2In Stock

$518.03

$512.01

$507.82

View

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 5 V, 0.45 pF, 15 kV, SOD883

SC3402-02ETG
Littelfuse
1: $0.751
10,065In Stock
New Product

Mfr. Part No.
SC3402-02ETG

Mouser Part No
576-SC3402-02ETG

New Product

Littelfuse

ESD Protection Diodes / TVS Diodes 5 V, 0.45 pF, 15 kV, SOD883

Learn More

Datasheet

10,065In Stock

Cut Tape

$0.751

$0.473

$0.30

$0.245

Reel

$0.149

View

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

NTC (Negative Temperature Coefficient) Thermistors NTC Mini Ni 0.4 ld 10K 1 % blk 0.4e/1e A

NTCLE213E3103FLB0A
Vishay / BC Components
1: $2.32
935In Stock
New Product

Mfr. Part No.
NTCLE213E3103FLB0A

Mouser Part No
594-NTCLE213E313FLB

New Product

Vishay / BC Components

NTC (Negative Temperature Coefficient) Thermistors NTC Mini Ni 0.4 ld 10K 1 % blk 0.4e/1e A

Datasheet

935In Stock

$2.32

$1.74

$1.39

$1.31

View

Min.: 1
Mult.: 1

Circuit Breakers PTCB TM1 1A F2 NO P

1509519
Phoenix Contact
1: $39.75
40In Stock
New Product

Mfr. Part No.
1509519

Mouser Part No
651-1509519

New Product

Phoenix Contact

Circuit Breakers PTCB TM1 1A F2 NO P

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Datasheet

40In Stock

$39.75

Min.: 1
Mult.: 1

Industrial Surge Protectors VAL-US-SPP-120/50/1+0-R

1790744
Phoenix Contact
1: $130.28
7In Stock
New Product

Mfr. Part No.
1790744

Mouser Part No
651-1790744

New Product

Phoenix Contact

Industrial Surge Protectors VAL-US-SPP-120/50/1+0-R

Learn More

Datasheet

7In Stock

$130.28

Min.: 1
Mult.: 1

Industrial Surge Protectors VAL-US-SPP-120/50/1+1-R

1790745
Phoenix Contact
1: $259.14
2In Stock
17On Order
New Product

Mfr. Part No.
1790745

Mouser Part No
651-1790745

New Product

Phoenix Contact

Industrial Surge Protectors VAL-US-SPP-120/50/1+1-R

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Datasheet

2In Stock

17On Order

$259.14

Min.: 1
Mult.: 1

Industrial Surge Protectors VAL-US-SPP-120/65-P

1790751
Phoenix Contact
1: $100.08
7In Stock
New Product

Mfr. Part No.
1790751

Mouser Part No
651-1790751

New Product

Phoenix Contact

Industrial Surge Protectors VAL-US-SPP-120/65-P

Learn More

Datasheet

7In Stock

$100.08

Min.: 1
Mult.: 1

Resettable Fuses - PPTC 2920 Resettable SMD PPTC 0.35A/72V

MF-LSMF035/72X-2
Bourns
1: $1.39
2,800In Stock
New Product

Mfr. Part No.
MF-LSMF035/72X-2

Mouser Part No
652-MF-LSMF035/72X-2

New Product

Bourns

Resettable Fuses - PPTC 2920 Resettable SMD PPTC 0.35A/72V

Learn More

Datasheet

2,800In Stock

Cut Tape

$1.39

$1.05

$0.796

$0.771

View

Reel

$0.475

Min.: 1
Mult.: 1

: 4,000

Resettable Fuses - PPTC 2920 Resettable SMD PPTC 0.5A/72V

MF-LSMF050/72X-2
Bourns
1: $1.39
2,744In Stock
New Product

Mfr. Part No.
MF-LSMF050/72X-2

Mouser Part No
652-MF-LSMF050/72X-2

New Product

Bourns

Resettable Fuses - PPTC 2920 Resettable SMD PPTC 0.5A/72V

Learn More

Datasheet

2,744In Stock

Cut Tape

$1.39

$1.05

$0.796

$0.771

View

Reel

$0.475

Min.: 1
Mult.: 1

: 4,000

Resettable Fuses - PPTC 2920 Resettable SMD PPTC 2.0A/33V

MF-LSMF200/33X-2
Bourns
1: $1.70
2,678In Stock
New Product

Mfr. Part No.
MF-LSMF200/33X-2

Mouser Part No
652-MF-LSMF200/33X-2

New Product

Bourns

Resettable Fuses - PPTC 2920 Resettable SMD PPTC 2.0A/33V

Learn More

Datasheet

2,678In Stock

Cut Tape

$1.70

$1.26

$0.948

$0.927

View

Reel

$0.566

Min.: 1
Mult.: 1

: 4,000

ESD Protection Diodes / TVS Diodes

2KDFN18A-M3/H
Vishay Semiconductors
1: $1.68
3,000In Stock
New Product

Mfr. Part No.
2KDFN18A-M3/H

Mouser Part No
78-2KDFN18A-M3/H

New Product

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes

Learn More

Datasheet

3,000In Stock

$1.68

$1.06

$0.694

$0.537

View

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 3KW,13V 5%, DFN6546A TVS

3KDFN13A-M3/H
Vishay Semiconductors
1: $1.57
3,000In Stock
New Product

Mfr. Part No.
3KDFN13A-M3/H

Mouser Part No
78-3KDFN13A-M3/H

New Product

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 3KW,13V 5%, DFN6546A TVS

Datasheet

3,000In Stock

Cut Tape

$1.57

$1.28

$0.997

$0.819

Reel

$0.638

View

Min.: 1
Mult.: 1

: 1,500

ESD Protection Diodes / TVS Diodes 3KW,20V 5%, DFN6546A BIDIR TVS

3KDFN20CA-M3/H
Vishay Semiconductors
1: $2.18
3,000In Stock
New Product

Mfr. Part No.
3KDFN20CA-M3/H

Mouser Part No
78-3KDFN20CA-M3/H

New Product

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 3KW,20V 5%, DFN6546A BIDIR TVS

Learn More

Datasheet

3,000In Stock

Cut Tape

$2.18

$1.39

$0.919

$0.72

Reel

$0.552

View

Min.: 1
Mult.: 1

: 1,500

ESD Protection Diodes / TVS Diodes 3KW,24V 5%, DFN6546A TVS

3KDFN24A-M3/H
Vishay Semiconductors
1: $1.57
3,000In Stock
New Product

Mfr. Part No.
3KDFN24A-M3/H

Mouser Part No
78-3KDFN24A-M3/H

New Product

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 3KW,24V 5%, DFN6546A TVS

Learn More

Datasheet

3,000In Stock

Cut Tape

$1.57

$1.28

$0.997

$0.819

Reel

$0.638

View

Min.: 1
Mult.: 1

: 1,500

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