.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: 362,009

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 #

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

TSX-NFM
PolyPhaser
1: £104.69
9In Stock
New Product

Mfr. Part No.
TSX-NFM

Mouser Part No
44-TSX-NFM

New Product

PolyPhaser

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

Learn More

Datasheet

9In Stock

£104.69

£99.30

Min.: 1
Mult.: 1

Connectorised Surge Protectors Type N F/F Coaxial RF Surge Protector, 100MHz - 512MHz, DC Block, 750W, IP67, .5uJ, 20kA, Filter, Bracket Down, Hole Mount

VHF50HN
PolyPhaser
1: £120.20
271On Order
New Product

Mfr. Part No.
VHF50HN

Mouser Part No
44-VHF50HN

New Product

PolyPhaser

Connectorised Surge Protectors Type N F/F Coaxial RF Surge Protector, 100MHz - 512MHz, DC Block, 750W, IP67, .5uJ, 20kA, Filter, Bracket Down, Hole Mount

Learn More

Datasheet

271On Order

£120.20

£114.01

Min.: 1
Mult.: 1

Connectorised Surge Protectors Type N M/F Coaxial RF Surge Protector, 0.5MHz - 1GHz, DC Block, 750W, IP67, 15mJ, 20kA, Filter, Bracket Down, Hole Mount

VUF50NHP-MA
PolyPhaser
1: £216.73
3In Stock
New Product

Mfr. Part No.
VUF50NHP-MA

Mouser Part No
44-VUF50NHP-MA

New Product

PolyPhaser

Connectorised Surge Protectors Type N M/F Coaxial RF Surge Protector, 0.5MHz - 1GHz, DC Block, 750W, IP67, 15mJ, 20kA, Filter, Bracket Down, Hole Mount

Datasheet

3In Stock

£216.73

£207.56

Min.: 1
Mult.: 1

Circuit Breaker Accessories 508, DM, 40A Supply Module, IOLink, ATEX

EM12D-TIO-000-DC24V-40A-E
E-T-A
1: £100.25
6In Stock
New Product

Mfr. Part No.
EM12D-TIO-000-DC24V-40A-E

Mouser Part No
457-EM12DTIO24V4AE

New Product

E-T-A

Circuit Breaker Accessories 508, DM, 40A Supply Module, IOLink, ATEX

Datasheet

6In Stock

£100.25

£85.09

£79.08

Min.: 1
Mult.: 1

Circuit Breaker Accessories 508, DM, 40A Supply Module, Modbus, ATEX

EM12D-TMB-000-DC24V-40A-E
E-T-A
1: £136.40
3In Stock
New Product

Mfr. Part No.
EM12D-TMB-000-DC24V-40A-E

Mouser Part No
457-EM12DTMB24V4AE

New Product

E-T-A

Circuit Breaker Accessories 508, DM, 40A Supply Module, Modbus, ATEX

Datasheet

3In Stock

£136.40

£132.63

£118.27

£109.91

Min.: 1
Mult.: 1

Industrial Surge Protectors VAL-SPP-T2-335-1+0-UT-R

1466578
Phoenix Contact
1: £74.37
7In Stock
New Product

Mfr. Part No.
1466578

Mouser Part No
651-1466578

New Product

Phoenix Contact

Industrial Surge Protectors VAL-SPP-T2-335-1+0-UT-R

Learn More

Datasheet

7In Stock

£74.37

£68.32

Min.: 1
Mult.: 1

ESD Protection Diodes / TVS Diodes 400W,24V5%,SMFBIDIRTVS

4SMF24CA-M3/I
Vishay Semiconductors
1: £0.375
6,809In Stock
New Product

Mfr. Part No.
4SMF24CA-M3/I

Mouser Part No
78-4SMF24CA-M3/I

New Product

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 400W,24V5%,SMFBIDIRTVS

Datasheet

6,809In Stock

Cut Tape

£0.375

£0.264

£0.129

£0.108

Reel

£0.05

View

Min.: 1
Mult.: 1

: 10,000

ESD Protection Diodes / TVS Diodes 400W,28V5%,SMFBIDIRTVS

4SMF28CA-M3/I
Vishay Semiconductors
1: £0.375
6,832In Stock
New Product

Mfr. Part No.
4SMF28CA-M3/I

Mouser Part No
78-4SMF28CA-M3/I

New Product

Vishay Semiconductors

ESD Protection Diodes / TVS Diodes 400W,28V5%,SMFBIDIRTVS

Datasheet

6,832In Stock

Cut Tape

£0.375

£0.264

£0.129

£0.108

Reel

£0.05

View

Min.: 1
Mult.: 1

: 10,000

Varistors CANFD, 15pF, 28VDC, 0402

AVRH10C390KT150NA8
TDK
1: £0.09
20,000Expected 29/07/2026
New Product

Mfr. Part No.
AVRH10C390KT150NA8

Mouser Part No
810-AVRH10C390KT150N

New Product

TDK

Varistors CANFD, 15pF, 28VDC, 0402

Learn More

Datasheet

20,000Expected 29/07/2026

Cut Tape

£0.09

£0.051

£0.043

£0.039

View

Reel

£0.03

MouseReel Available

Min.: 1
Mult.: 1

: 10,000

Varistors MLV. 0603,37V

B72500X0370S060
TDK
1: £0.173
2,800In Stock
New Product

Mfr. Part No.
B72500X0370S060

Mouser Part No
871-B72500X0370S060

New Product

TDK

Varistors MLV. 0603,37V

Learn More

Datasheet

2,800In Stock

Cut Tape

£0.173

£0.12

£0.106

£0.083

Reel

£0.062

View

MouseReel Available

Min.: 1
Mult.: 1

: 4,000

Connectorised Surge Protectors Coaxial RF Surge Protector Kit, BGXZ-60NFNM-AS, Hardware Kit

108-1019A
PolyPhaser
1: £144.93
4In Stock
New Product

Mfr. Part No.
108-1019A

Mouser Part No
44-108-1019A

New Product

PolyPhaser

Connectorised Surge Protectors Coaxial RF Surge Protector Kit, BGXZ-60NFNM-AS, Hardware Kit

Datasheet

4In Stock

£144.93

Min.: 1
Mult.: 1

Connectorised Surge Protectors Type N F/F Coaxial RF Surge Protector, 400MHz - 1.2GHz, 300W, IP67, 15 V Max., 500uJ, 20kA, Hybrid, Bracket Down, Hole Mount

CGXZ+15NFNF-A
PolyPhaser
1: £127.96
3In Stock
4On Order
New Product

Mfr. Part No.
CGXZ+15NFNF-A

Mouser Part No
44-CGXZ+15NFNF-A

New Product

PolyPhaser

Connectorised Surge Protectors Type N F/F Coaxial RF Surge Protector, 400MHz - 1.2GHz, 300W, IP67, 15 V Max., 500uJ, 20kA, Hybrid, Bracket Down, Hole Mount

Learn More

Datasheet

3In Stock

4On Order

£127.96

£121.37

Min.: 1
Mult.: 1

Connectorised Surge Protectors Type N M/F Coaxial RF Surge Protector, 400MHz - 1.2GHz, 300W, IP67, 15 V Max., 500uJ, 20kA, Hybrid, Bracket Down, Hole Mount

CGXZ+15NMNF-A
PolyPhaser
1: £135.01
5On Order
New Product

Mfr. Part No.
CGXZ+15NMNF-A

Mouser Part No
44-CGXZ+15NMNF-A

New Product

PolyPhaser

Connectorised Surge Protectors Type N M/F Coaxial RF Surge Protector, 400MHz - 1.2GHz, 300W, IP67, 15 V Max., 500uJ, 20kA, Hybrid, Bracket Down, Hole Mount

Learn More

Datasheet

5On Order

£135.01

£129.29

Min.: 1
Mult.: 1

Surge Protection Accessories Ground Strap Adapter Kit for SX Series DIN Connectors

GSA-KIT-D
PolyPhaser
1: £60.73
5In Stock
New Product

Mfr. Part No.
GSA-KIT-D

Mouser Part No
44-GSA-KIT-D

New Product

PolyPhaser

Surge Protection Accessories Ground Strap Adapter Kit for SX Series DIN Connectors

Learn More

Datasheet

5In Stock

£60.73

£57.61

Min.: 1
Mult.: 1

Connectorised Surge Protectors Type N F/M Coaxial RF Surge Protector, 125MHz - 1GHz, DC Block, 375W, 220uJ, 50kA, Blocking Cap, Bracket Up, Hole Mount

IS-50NX-C2-ME
PolyPhaser
1: £63.96
9In Stock
New Product

Mfr. Part No.
IS-50NX-C2-ME

Mouser Part No
44-IS-50NX-C2-ME

New Product

PolyPhaser

Connectorised Surge Protectors Type N F/M Coaxial RF Surge Protector, 125MHz - 1GHz, DC Block, 375W, 220uJ, 50kA, Blocking Cap, Bracket Up, Hole Mount

Learn More

Datasheet

9In Stock

£63.96

£60.67

Min.: 1
Mult.: 1

Connectorised Surge Protectors UHF F/M Coaxial RF Surge Protector, 50MHz - 700MHz, DC Block, 375W, 600uJ, 50kA, Blocking Cap, Bracket Up, Hole Mount

IS-50UX-C1-ME
PolyPhaser
1: £84.01
4In Stock
New Product

Mfr. Part No.
IS-50UX-C1-ME

Mouser Part No
44-IS-50UX-C1-ME

New Product

PolyPhaser

Connectorised Surge Protectors UHF F/M Coaxial RF Surge Protector, 50MHz - 700MHz, DC Block, 375W, 600uJ, 50kA, Blocking Cap, Bracket Up, Hole Mount

Datasheet

4In Stock

£84.01

£79.68

Min.: 1
Mult.: 1

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

IS-B50LN-C2-ME
PolyPhaser
1: £68.50
7In Stock
New Product

Mfr. Part No.
IS-B50LN-C2-ME

Mouser Part No
44-IS-B50LN-C2-ME

New Product

PolyPhaser

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

Learn More

Datasheet

7In Stock

£68.50

£64.97

Min.: 1
Mult.: 1

Connectorised Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 125MHz - 1GHz, DC Block, 200W, 250uJ, 50kA, Blocking Cap, Hole Mount

IS-NEMP-C2
PolyPhaser
1: £140.88
5In Stock
New Product

Mfr. Part No.
IS-NEMP-C2

Mouser Part No
44-IS-NEMP-C2

New Product

PolyPhaser

Connectorised Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 125MHz - 1GHz, DC Block, 200W, 250uJ, 50kA, Blocking Cap, Hole Mount

Learn More

Datasheet

5In Stock

£140.88

£133.62

Min.: 1
Mult.: 1

Connectorised Surge Protectors Outdoor Twisted Pair Lightning Surge Protector, 2 Pair RS-232, UL 497B

IX-2M
PolyPhaser
1: £118.91
3In Stock
New Product

Mfr. Part No.
IX-2M

Mouser Part No
44-IX-2M

New Product

PolyPhaser

Connectorised Surge Protectors Outdoor Twisted Pair Lightning Surge Protector, 2 Pair RS-232, UL 497B

Learn More

Datasheet

3In Stock

£118.91

£112.78

Min.: 1
Mult.: 1

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

LSXL
PolyPhaser
1: £100.81
9In Stock
New Product

Mfr. Part No.
LSXL

Mouser Part No
44-LSXL

New Product

PolyPhaser

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

Learn More

Datasheet

9In Stock

£100.81

£95.62

Min.: 1
Mult.: 1

Connectorised Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, DC - 2.4GHz, 50W, IP67, 60 V Max., 3mJ, 18kA, Gas Discharge Tube

RGT
PolyPhaser
1: £98.22
9In Stock
New Product

Mfr. Part No.
RGT

Mouser Part No
44-RGT

New Product

PolyPhaser

Connectorised Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, DC - 2.4GHz, 50W, IP67, 60 V Max., 3mJ, 18kA, Gas Discharge Tube

Learn More

Datasheet

9In Stock

£98.22

£93.17

Min.: 1
Mult.: 1

Connectorised Surge Protectors Positive Train Control (PTC) Filter, Railroad RF Band Pass with Surge Protector, 160 MHz to 163 MHz, Type N F/F, 100W CW, IP67, 50uJ, 10kA

RRF-160-NFF
PolyPhaser
1: £279.49
1In Stock
New Product

Mfr. Part No.
RRF-160-NFF

Mouser Part No
44-RRF-160-NFF

New Product

PolyPhaser

Connectorised Surge Protectors Positive Train Control (PTC) Filter, Railroad RF Band Pass with Surge Protector, 160 MHz to 163 MHz, Type N F/F, 100W CW, IP67, 50uJ, 10kA

Datasheet

1In Stock

£279.49

£267.68

Min.: 1
Mult.: 1

NTC (Negative Temperature Coefficient) Thermistors ESAPP-ESA PROBE-RTD PT1000, 1000mm

20016752-01
TE Connectivity
1: £612.65
1In Stock
New Product

Mfr. Part No.
20016752-01

Mouser Part No
571-20016752-01

New Product

TE Connectivity

NTC (Negative Temperature Coefficient) Thermistors ESAPP-ESA PROBE-RTD PT1000, 1000mm

Learn More

Datasheet

1In Stock

£612.65

£560.10

£515.93

View

Min.: 1
Mult.: 1

Surge Protection Accessories Flange to Bulkhead Type 4.3-10 Adapter Kit

BF4310
PolyPhaser
1: £39.91
9In Stock
New Product

Mfr. Part No.
BF4310

Mouser Part No
44-BF4310

New Product

PolyPhaser

Surge Protection Accessories Flange to Bulkhead Type 4.3-10 Adapter Kit

Learn More

Datasheet

9In Stock

£39.91

£37.48

£36.27

Min.: 1
Mult.: 1

Surge Protection Accessories Kit Flange to Bulkhead DIN Adapter

BFD
PolyPhaser
1: £29.69
24In Stock
New Product

Mfr. Part No.
BFD

Mouser Part No
44-BFD

New Product

PolyPhaser

Surge Protection Accessories Kit Flange to Bulkhead DIN Adapter

Learn More

Datasheet

24In Stock

£29.69

£27.70

£26.55

£26.54

Quote

Min.: 1
Mult.: 1

Circuit Protection

Types of Circuit Protection

Customer Service Office

Company

Resources

Support