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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: 359,642

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Part #

Connectorized Surge Protectors 4.3-10 F/F Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, DC Block, 500W, IP67, .005uJ, 40kA, Filter, Low PIM

TSX-4310FF-P
PolyPhaser
1: $197.17
10In Stock
New Product

Mfr. Part #
TSX-4310FF-P

Mouser Part #
44-TSX-4310FF-P

New Product

PolyPhaser

Connectorized Surge Protectors 4.3-10 F/F Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, DC Block, 500W, IP67, .005uJ, 40kA, Filter, Low PIM

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Datasheet

10In Stock

$197.17

$188.83

Min.: 1
Mult.: 1

Connectorized Surge Protectors 7/16 F/F Bulkhead Coaxial RF Surge Protector, 100MHz - 512MHz, DC Block, 750W, IP67, .5uJ, 20kA, Filter, Low PIM -150 dBc, Hole Mount

VHF50D-PGR
PolyPhaser
1: $214.53
8In Stock
9On Order
New Product

Mfr. Part #
VHF50D-PGR

Mouser Part #
44-VHF50D-PGR

New Product

PolyPhaser

Connectorized Surge Protectors 7/16 F/F Bulkhead Coaxial RF Surge Protector, 100MHz - 512MHz, DC Block, 750W, IP67, .5uJ, 20kA, Filter, Low PIM -150 dBc, Hole Mount

Datasheet

8In Stock

9On Order

$214.53

$205.45

Min.: 1
Mult.: 1

Industrial Surge Protectors SHOCK BLOCK CLASS A GFCI 208-240V 30A

SB4030-521-00
Littelfuse
1: $525.97
4In Stock
New Product

Mfr. Part #
SB4030-521-00

Mouser Part #
576-SB4030-521-00

New Product

Littelfuse

Industrial Surge Protectors SHOCK BLOCK CLASS A GFCI 208-240V 30A

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Datasheet

4In Stock

$525.97

Min.: 1
Mult.: 1

Industrial Surge Protectors VAL-US-SPP-240/50/3+1-R

1790767
Phoenix Contact
1: $358.02
7In Stock
New Product

Mfr. Part #
1790767

Mouser Part #
651-1790767

New Product

Phoenix Contact

Industrial Surge Protectors VAL-US-SPP-240/50/3+1-R

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Datasheet

7In Stock

$358.02

$351.00

Min.: 1
Mult.: 1

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 250A

PF-000100E250B1
Bourns
1: $227.56
13In Stock
New Product

Mfr. Part #
PF-000100E250B1

Mouser Part #
652-PF-000100E250B1

New Product

Bourns

Industrial & Electrical Fuses POWrFuse BD 1000Vdc 250A

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Datasheet

13In Stock

$227.56

$188.64

$171.68

$137.83

Min.: 1
Mult.: 1

NTC Thermistors ESAPP-ESA PROBE-RTD PT1000, 2000mm

20016752-02
TE Connectivity
1: $1,444.55
A tariff of 12% may be applied if shipping to the United States.
4In Stock
10Expected 8/31/2026
New Product

Mfr. Part #
20016752-02

Mouser Part #
571-20016752-02

New Product

TE Connectivity

NTC Thermistors ESAPP-ESA PROBE-RTD PT1000, 2000mm

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Datasheet

4In Stock

10Expected 8/31/2026

$1,444.55

$1,320.64

View

A tariff of 12% may be applied if shipping to the United States.

Min.: 1
Mult.: 1

Connectorized Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 700MHz to 1000MHz, Telemetry, DC Pass, 15V, IP67, 20kA, Hybrid, Flange Mount

109-0501W-D
PolyPhaser
1: $172.15
5In Stock
New Product

Mfr. Part #
109-0501W-D

Mouser Part #
44-109-0501W-D

New Product

PolyPhaser

Connectorized Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 700MHz to 1000MHz, Telemetry, DC Pass, 15V, IP67, 20kA, Hybrid, Flange Mount

Datasheet

5In Stock

$172.15

$163.28

Min.: 1
Mult.: 1

Connectorized Surge Protectors Type N M/F Bulkhead Coaxial RF Surge Protector, 2GHz - 6GHz, DC Block, 10W, IP67, .5uJ, 10kA, Filter

AL-LSXM-MA
PolyPhaser
1: $73.11
13In Stock
5On Order
New Product

Mfr. Part #
AL-LSXM-MA

Mouser Part #
44-AL-LSXM-MA

New Product

PolyPhaser

Connectorized Surge Protectors Type N M/F Bulkhead Coaxial RF Surge Protector, 2GHz - 6GHz, DC Block, 10W, IP67, .5uJ, 10kA, Filter

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Datasheet

13In Stock

5On Order

$73.11

$69.22

Min.: 1
Mult.: 1

Connectorized 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: $257.12
5In Stock
New Product

Mfr. Part #
HT-RO-TSX-DCDFM

Mouser Part #
44-HT-RO-TSX-DCDFM

New Product

PolyPhaser

Connectorized 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

5In Stock

$257.12

$246.24

Min.: 1
Mult.: 1

Connectorized 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: $132.55
7In Stock
New Product

Mfr. Part #
IS-B50HN-C2-ME

Mouser Part #
44-IS-B50HN-C2-ME

New Product

PolyPhaser

Connectorized 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

7In Stock

$132.55

$125.72

Min.: 1
Mult.: 1

Connectorized 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: $139.44
5In Stock
New Product

Mfr. Part #
IS-B50LU-C0-MA

Mouser Part #
44-IS-B50LU-C0-MA

New Product

PolyPhaser

Connectorized 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

5In Stock

$139.44

$132.25

Min.: 1
Mult.: 1

Connectorized Surge Protectors Outdoor Twisted Pair Lightning Surge Protector, 5 Pair POTS, xDSL, UL 497B

IX-5T
PolyPhaser
1: $255.54
1In Stock
New Product

Mfr. Part #
IX-5T

Mouser Part #
44-IX-5T

New Product

PolyPhaser

Connectorized Surge Protectors Outdoor Twisted Pair Lightning Surge Protector, 5 Pair POTS, xDSL, UL 497B

Datasheet

1In Stock

$255.54

$244.73

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: $106.22
A tariff of 8% may be applied if shipping to the United States.
4In Stock
New Product

Mfr. Part #
REX22D-TD2-100-DC24V-2A/3A/3,6A-CL2-E

Mouser Part #
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

$106.22

$88.70

$82.43

A tariff of 8% may be applied if shipping to the United States.

Min.: 1
Mult.: 1

NTC Thermistors ESA PROBE-RTD PT1000 3000mm ENG MODEL

10219128-03
TE Connectivity
1: $629.25
A tariff of 12% may be applied if shipping to the United States.
2In Stock
New Product

Mfr. Part #
10219128-03

Mouser Part #
571-10219128-03

New Product

TE Connectivity

NTC Thermistors ESA PROBE-RTD PT1000 3000mm ENG MODEL

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Datasheet

2In Stock

$629.25

$575.28

$529.92

View

A tariff of 12% may be applied if shipping to the United States.

Min.: 1
Mult.: 1

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

1790744
Phoenix Contact
1: $94.11
4In Stock
8On Order
New Product

Mfr. Part #
1790744

Mouser Part #
651-1790744

New Product

Phoenix Contact

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

Learn More

Datasheet

4In Stock

8On Order

$94.11

$93.73

Min.: 1
Mult.: 1

Industrial Surge Protectors VAL-US-SPP-120/50/3+1-R

1790750
Phoenix Contact
1: $393.50
4In Stock
New Product

Mfr. Part #
1790750

Mouser Part #
651-1790750

New Product

Phoenix Contact

Industrial Surge Protectors VAL-US-SPP-120/50/3+1-R

Learn More

Datasheet

4In Stock

$393.50

$361.53

Min.: 1
Mult.: 1

Industrial Surge Protectors VAL-US-SPP-277/50/1+1-R

1790772
Phoenix Contact
1: $181.00
5In Stock
New Product

Mfr. Part #
1790772

Mouser Part #
651-1790772

New Product

Phoenix Contact

Industrial Surge Protectors VAL-US-SPP-277/50/1+1-R

Learn More

Datasheet

5In Stock

$181.00

Min.: 1
Mult.: 1

NTC Thermistors SMD NTC Thermistor 0805 10kOhm 1% B-3455 HT Series

B57432V5103A262
TDK
1: $0.48
2,713In Stock
New Product

Mfr. Part #
B57432V5103A262

Mouser Part #
871-B57432V5103A262

New Product

TDK

NTC Thermistors SMD NTC Thermistor 0805 10kOhm 1% B-3455 HT Series

Datasheet

2,713In Stock

Cut Tape

$0.48

$0.449

$0.419

$0.398

View

Reel

$0.297

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

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

IS-50NX-C0-MA
PolyPhaser
1: $106.73
4In Stock
12Expected 9/4/2026
New Product

Mfr. Part #
IS-50NX-C0-MA

Mouser Part #
44-IS-50NX-C0-MA

New Product

PolyPhaser

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

Learn More

Datasheet

4In Stock

12Expected 9/4/2026

$106.73

$101.23

Min.: 1
Mult.: 1

Connectorized Surge Protectors Type N M/F Coaxial RF Surge Protector, 10MHz - 1GHz, DC Block, 1.5kW, 3.5mJ, 20kA, Blocking Cap, Bracket Up, Hole Mount

IS-B50LN-C0-MA
PolyPhaser
1: $111.89
10In Stock
New Product

Mfr. Part #
IS-B50LN-C0-MA

Mouser Part #
44-IS-B50LN-C0-MA

New Product

PolyPhaser

Connectorized Surge Protectors Type N M/F Coaxial RF Surge Protector, 10MHz - 1GHz, DC Block, 1.5kW, 3.5mJ, 20kA, Blocking Cap, Bracket Up, Hole Mount

Learn More

Datasheet

10In Stock

$111.89

$106.13

Min.: 1
Mult.: 1

Connectorized Surge Protectors Outdoor Twisted Pair Lightning Surge Protector, 2 Pair 100Base-T Ethernet, 1 Pair 48Vdc, UL 497B

IX-2H1DC48
PolyPhaser
1: $186.13
5In Stock
New Product

Mfr. Part #
IX-2H1DC48

Mouser Part #
44-IX-2H1DC48

New Product

PolyPhaser

Connectorized Surge Protectors Outdoor Twisted Pair Lightning Surge Protector, 2 Pair 100Base-T Ethernet, 1 Pair 48Vdc, UL 497B

Learn More

Datasheet

5In Stock

$186.13

$178.25

Min.: 1
Mult.: 1

Connectorized Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, 1.8GHz - 6GHz, DC Block, 10W, IP67, .5uJ, 18kA, Filter

LSXL-ME
PolyPhaser
1: $154.93
5In Stock
New Product

Mfr. Part #
LSXL-ME

Mouser Part #
44-LSXL-ME

New Product

PolyPhaser

Connectorized Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, 1.8GHz - 6GHz, DC Block, 10W, IP67, .5uJ, 18kA, Filter

Learn More

Datasheet

5In Stock

$154.93

$146.95

Min.: 1
Mult.: 1

Surge Protection Accessories Transition Clamp with Shims to Connect Copper to Galvanized Tower Legs for 2 1/4 to 3 1/4 inch

TK-3
PolyPhaser
1: $50.68
10In Stock
New Product

Mfr. Part #
TK-3

Mouser Part #
44-TK-3

New Product

PolyPhaser

Surge Protection Accessories Transition Clamp with Shims to Connect Copper to Galvanized Tower Legs for 2 1/4 to 3 1/4 inch

Learn More

Datasheet

10In Stock

$50.68

$47.29

$45.31

$45.30

Quote

Min.: 1
Mult.: 1

Connectorized Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, DC Block, 500W, IP67, .005uJ, 40kA, Filter, w/ Bracket

TSX-NFM-BF
PolyPhaser
1: $165.27
6In Stock
New Product

Mfr. Part #
TSX-NFM-BF

Mouser Part #
44-TSX-NFM-BF

New Product

PolyPhaser

Connectorized Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, DC Block, 500W, IP67, .005uJ, 40kA, Filter, w/ Bracket

Learn More

Datasheet

6In Stock

$165.27

$156.76

Min.: 1
Mult.: 1

Connectorized Surge Protectors 4.3-10 M/F Coaxial RF Surge Protector, 100MHz - 520MHz, DC Block, 750W, 20kA, Bracket Down

VHF50B43-MA-BD
PolyPhaser
1: $233.45
6In Stock
New Product

Mfr. Part #
VHF50B43-MA-BD

Mouser Part #
44-VHF50B43-MA-BD

New Product

PolyPhaser

Connectorized Surge Protectors 4.3-10 M/F Coaxial RF Surge Protector, 100MHz - 520MHz, DC Block, 750W, 20kA, Bracket Down

Datasheet

6In Stock

$233.45

$223.58

Min.: 1
Mult.: 1

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