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

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.
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: 360,919

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; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Connectorized Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, 10MHz - 1GHz, DC Block, 1.5kW, 3.5mJ, 20kA, Blocking Cap, Hole Mount, Use IS-B50LN-C2-ME IS-B50LN-C0-ME PolyPhaser 1: $111.89 318In Stock New Product	Mfr. Part # IS-B50LN-C0-ME Mouser Part # 44-IS-B50LN-C0-ME New Product	PolyPhaser	Connectorized Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, 10MHz - 1GHz, DC Block, 1.5kW, 3.5mJ, 20kA, Blocking Cap, Hole Mount, Use IS-B50LN-C2-ME Learn More about PolyPhaser is b50 surge protectors	Datasheet	318In Stock	$111.89 $106.13	Min.: 1 Mult.: 1
Connectorized Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 10MHz - 1GHz, DC Block, 1.5kW, 120uJ, 20kA, Blocking Cap, Hole Mount IS-B50LN-C2 PolyPhaser 1: $110.17 516In Stock New Product	Mfr. Part # IS-B50LN-C2 Mouser Part # 44-IS-B50LN-C2 New Product	PolyPhaser	Connectorized Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 10MHz - 1GHz, DC Block, 1.5kW, 120uJ, 20kA, Blocking Cap, Hole Mount Learn More about PolyPhaser is b50 surge protectors	Datasheet	516In Stock	$110.17 $104.49	Min.: 1 Mult.: 1
Connectorized Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, DC Block, 500W, IP67, .005uJ, 40kA, Filter TSX-NFF PolyPhaser 1: $170.43 100In Stock 20Expected 10/9/2026 New Product	Mfr. Part # TSX-NFF Mouser Part # 44-TSX-NFF New Product	PolyPhaser	Connectorized Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, DC Block, 500W, IP67, .005uJ, 40kA, Filter Learn More about PolyPhaser tsx tusx rf surge protectors	Datasheet	100In Stock 20Expected 10/9/2026	$170.43 $161.65	Min.: 1 Mult.: 1
Connectorized 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: $160.10 377In Stock 50Expected 10/15/2026 New Product	Mfr. Part # VHF50HN Mouser Part # 44-VHF50HN New Product	PolyPhaser	Connectorized 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 about PolyPhaser 100mhz 512mhz surge protectors	Datasheet	377In Stock 50Expected 10/15/2026	$160.10 $151.85	Min.: 1 Mult.: 1
Connectorized Surge Protectors Type N F/F Coaxial RF Surge Protector, 800MHz - 2.5GHz, 300W, IP67, 6 V Max., 175uJ, 20kA, Hybrid, Bracket Down, Hole Mount DGXZ+06NFNF-A PolyPhaser 1: $216.10 102In Stock 41Expected 10/16/2026 New Product	Mfr. Part # DGXZ+06NFNF-A Mouser Part # 44-DGXZ+06NFNF-A New Product	PolyPhaser	Connectorized Surge Protectors Type N F/F Coaxial RF Surge Protector, 800MHz - 2.5GHz, 300W, IP67, 6 V Max., 175uJ, 20kA, Hybrid, Bracket Down, Hole Mount Learn More about PolyPhaser gx surge protectors	Datasheet	102In Stock 41Expected 10/16/2026	$216.10 $206.96	Min.: 1 Mult.: 1
NTC Thermistors ESAPP-ESA PROBE-RTD PT1000, 2000mm 20016752-02 TE Connectivity 1: $1,444.82 A tariff of 12% may be applied if shipping to the United States. 14In Stock New Product	Mfr. Part # 20016752-02 Mouser Part # 571-20016752-02 New Product	TE Connectivity	NTC Thermistors ESAPP-ESA PROBE-RTD PT1000, 2000mm Learn More about TE Connectivity te surface mount temperature sensors	Datasheet	14In Stock	$1,444.82 $1,320.90 View Quote A tariff of 12% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Connectorized Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, DC - 1.0GHz, DC Pass, 60V, 100W, 4kA, Gas Tube 108-1118B-A PolyPhaser 1: $94.68 38In Stock 8Expected 10/9/2026 New Product	Mfr. Part # 108-1118B-A Mouser Part # 44-108-1118B-A New Product	PolyPhaser	Connectorized Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, DC - 1.0GHz, DC Pass, 60V, 100W, 4kA, Gas Tube	Datasheet	38In Stock 8Expected 10/9/2026	$94.68 $89.80	Min.: 1 Mult.: 1
Connectorized Surge Protectors TNC F/F Coaxial RF Surge Protector, 800MHz - 2.5GHz, 300W, IP67, 6 V Max., 175uJ, 20kA, Hybrid, Bracket Down, Hole Mount DGXZ+06TFTF-A PolyPhaser 1: $180.76 54In Stock New Product	Mfr. Part # DGXZ+06TFTF-A Mouser Part # 44-DGXZ+06TFTF-A New Product	PolyPhaser	Connectorized Surge Protectors TNC F/F Coaxial RF Surge Protector, 800MHz - 2.5GHz, 300W, IP67, 6 V Max., 175uJ, 20kA, Hybrid, Bracket Down, Hole Mount Learn More about PolyPhaser gx surge protectors	Datasheet	54In Stock	$180.76 $171.45	Min.: 1 Mult.: 1
Connectorized 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: $77.58 40In Stock New Product	Mfr. Part # DT-NFF Mouser Part # 44-DT-NFF New Product	PolyPhaser	Connectorized Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, DC - 3GHz, 40W, IP67, 60 V Max., 500uJ, 4kA, Gas Discharge Tube Learn More about PolyPhaser dc 7ghz rf coaxial surge protectors	Datasheet	40In Stock	$77.58 $73.44	Min.: 1 Mult.: 1
Connectorized Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 1.5MHz - 700MHz, DC Block, 3kW, 20uJ, 50kA, Blocking Cap, Hole Mount IS-B50HN-C0 PolyPhaser 1: $125.66 20In Stock 12On Order New Product	Mfr. Part # IS-B50HN-C0 Mouser Part # 44-IS-B50HN-C0 New Product	PolyPhaser	Connectorized Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 1.5MHz - 700MHz, DC Block, 3kW, 20uJ, 50kA, Blocking Cap, Hole Mount Learn More about PolyPhaser 1 5mhz 6ghz surge protectors	Datasheet	20In Stock 12On Order On Order Ship Dates Mfr. #: IS-B50HN-C0 Stock: 20 Can Ship Immediately On Order: 5 Pending 7 Expected 10/21/2026 Factory Lead-Time: 5 Weeks	$125.66 $119.19	Min.: 1 Mult.: 1
Connectorized Surge Protectors Type N M/F Coaxial RF Surge Protector, 1.5MHz - 700MHz, DC Block, 500W, 20mJ, 50kA, Blocking Cap, Bracket Up, Hole Mount IS-B50HN-C0-MA PolyPhaser 1: $123.94 18In Stock 7On Order New Product	Mfr. Part # IS-B50HN-C0-MA Mouser Part # 44-IS-B50HN-C0-MA New Product	PolyPhaser	Connectorized Surge Protectors Type N M/F Coaxial RF Surge Protector, 1.5MHz - 700MHz, DC Block, 500W, 20mJ, 50kA, Blocking Cap, Bracket Up, Hole Mount Learn More about PolyPhaser 1 5mhz 6ghz surge protectors	Datasheet	18In Stock 7On Order	$123.94 $117.56	Min.: 1 Mult.: 1
Connectorized 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: $122.22 70In Stock New Product	Mfr. Part # IS-B50HN-C2 Mouser Part # 44-IS-B50HN-C2 New Product	PolyPhaser	Connectorized Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 125MHz - 1GHz, DC Block, 500W, 800uJ, 20kA, Blocking Cap, Hole Mount Learn More about PolyPhaser 125mhz 1ghz type n surge protectors	Datasheet	70In Stock	$122.22 $115.92	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 66In 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 Learn More about PolyPhaser 125mhz 1ghz type n surge protectors	Datasheet	66In Stock	$132.55 $125.72	Min.: 1 Mult.: 1
Connectorized Surge Protectors Type N F/F Coaxial RF Surge Protector, 100MHz - 512MHz, DC Block, 750W, IP67, .5uJ, 20kA, Filter, Bracket Up, Hole Mount VHF50HN-B PolyPhaser 1: $163.54 36In Stock 40Expected 12/9/2026 New Product	Mfr. Part # VHF50HN-B Mouser Part # 44-VHF50HN-B New Product	PolyPhaser	Connectorized Surge Protectors Type N F/F Coaxial RF Surge Protector, 100MHz - 512MHz, DC Block, 750W, IP67, .5uJ, 20kA, Filter, Bracket Up, Hole Mount Learn More about PolyPhaser 100mhz 512mhz surge protectors	Datasheet	36In Stock 40Expected 12/9/2026	$163.54 $155.12	Min.: 1 Mult.: 1
Connectorized 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: $170.43 19In Stock New Product	Mfr. Part # CGXZ+15NFNF-A Mouser Part # 44-CGXZ+15NFNF-A New Product	PolyPhaser	Connectorized 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 about PolyPhaser 400mhz 2 5ghz surge protectors	Datasheet	19In Stock	$170.43 $161.65	Min.: 1 Mult.: 1
Connectorized Surge Protectors TNC F/F Coaxial RF Surge Protector, 800MHz - 2.5GHz, 300W, IP67, 15 V Max., 500uJ, 20kA, Hybrid, Bracket Up, Hole Mount DGXZ+15TFTF-BN PolyPhaser 1: $194.53 22In Stock New Product	Mfr. Part # DGXZ+15TFTF-BN Mouser Part # 44-DGXZ+15TFTF-BN New Product	PolyPhaser	Connectorized Surge Protectors TNC F/F Coaxial RF Surge Protector, 800MHz - 2.5GHz, 300W, IP67, 15 V Max., 500uJ, 20kA, Hybrid, Bracket Up, Hole Mount Learn More about PolyPhaser gx surge protectors	Datasheet	22In Stock	$194.53 $184.51	Min.: 1 Mult.: 1
Connectorized Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, DC - 6GHz, 90W, IP67, 60 V Max., 5mJ, 20kA, Gas Discharge Tube GT-NFM-AL PolyPhaser 1: $72.22 51In Stock 31On Order New Product	Mfr. Part # GT-NFM-AL Mouser Part # 44-GT-NFM-AL New Product	PolyPhaser	Connectorized Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, DC - 6GHz, 90W, IP67, 60 V Max., 5mJ, 20kA, Gas Discharge Tube Learn More about PolyPhaser dc 7ghz rf coaxial surge protectors	Datasheet	51In Stock 31On Order On Order Ship Dates Mfr. #: GT-NFM-AL Stock: 51 Can Ship Immediately On Order: 10 Expected 10/9/2026 21 Expected 10/22/2026 Factory Lead-Time: 5 Weeks	$72.22 $68.37	Min.: 1 Mult.: 1
Connectorized Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 1.5MHz - 700MHz, DC Block, 500W, 75uJ, 50kA, Blocking Cap, Hole Mount IS-NEMP-C0 PolyPhaser 1: $198.75 8In Stock 10Expected 10/7/2026 New Product	Mfr. Part # IS-NEMP-C0 Mouser Part # 44-IS-NEMP-C0 New Product	PolyPhaser	Connectorized Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 1.5MHz - 700MHz, DC Block, 500W, 75uJ, 50kA, Blocking Cap, Hole Mount Learn More about PolyPhaser 1 5mhz 6ghz surge protectors	Datasheet	8In Stock 10Expected 10/7/2026	$198.75 $190.34	Min.: 1 Mult.: 1
Connectorized Surge Protectors 7/16 DIN M/F Quarter Wave RF Protector, 555MHz to 4.5GHz, Low PIM QWP-DMDF-ER PolyPhaser 1: $199.46 21In Stock New Product	Mfr. Part # QWP-DMDF-ER Mouser Part # 44-QWP-DMDF-ER New Product	PolyPhaser	Connectorized Surge Protectors 7/16 DIN M/F Quarter Wave RF Protector, 555MHz to 4.5GHz, Low PIM	Datasheet	21In Stock	$199.46 $191.03	Min.: 1 Mult.: 1
Connectorized Surge Protectors Positive Train Control (PTC) Filter, Railroad RF Band Pass with Surge Protector, 217 MHz to 223 MHz, Type N F/F, 100W CW, IP67, 50uJ, 10kA RRF-220-NFF PolyPhaser 1: $353.34 6In Stock New Product	Mfr. Part # RRF-220-NFF Mouser Part # 44-RRF-220-NFF New Product	PolyPhaser	Connectorized Surge Protectors Positive Train Control (PTC) Filter, Railroad RF Band Pass with Surge Protector, 217 MHz to 223 MHz, Type N F/F, 100W CW, IP67, 50uJ, 10kA	Datasheet	6In Stock	$353.34 $338.40	Min.: 1 Mult.: 1
Connectorized Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, DC Block, 500W, IP67, .005uJ, 40kA, Filter, Low PIM TSX-NFF-P PolyPhaser 1: $165.26 35In Stock New Product	Mfr. Part # TSX-NFF-P Mouser Part # 44-TSX-NFF-P New Product	PolyPhaser	Connectorized Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, DC Block, 500W, IP67, .005uJ, 40kA, Filter, Low PIM Learn More about PolyPhaser 650mhz 2 7ghz surge protectors	Datasheet	35In Stock	$165.26 $156.75	Min.: 1 Mult.: 1
Industrial Surge Protectors SFP2-1S-1-15A-120AC-PT 1292450 Phoenix Contact 1: $235.87 A tariff of 35% may be applied if shipping to the United States. 7In Stock 30On Order New Product	Mfr. Part # 1292450 Mouser Part # 651-1292450 New Product	Phoenix Contact	Industrial Surge Protectors SFP2-1S-1-15A-120AC-PT Learn More about Phoenix Contact fil 1s sfp2 emc filters	Datasheet	7In Stock 30On Order On Order Ship Dates Mfr. #: 1292450 Stock: 7 Can Ship Immediately On Order: 8 Expected 10/23/2026 14 Expected 12/7/2026 8 Expected 1/28/2027 Factory Lead-Time: 10 Weeks	$235.87 A tariff of 35% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Connectorized Surge Protectors Type N F/F Coaxial RF Surge Protector, 40MHz - 400MHz, 100W, IP67, 60 V Max., 2.5mJ, 20kA, Hybrid, Bracket Down, Hole Mount BGXZ-60NFNF-ALT PolyPhaser 1: $179.82 29In Stock 43On Order New Product	Mfr. Part # BGXZ-60NFNF-ALT Mouser Part # 44-BGXZ-60NFNF-ALT New Product	PolyPhaser	Connectorized Surge Protectors Type N F/F Coaxial RF Surge Protector, 40MHz - 400MHz, 100W, IP67, 60 V Max., 2.5mJ, 20kA, Hybrid, Bracket Down, Hole Mount Learn More about PolyPhaser 40mhz 400mhz surge protectors	Datasheet	29In Stock 43On Order	$179.82 $172.21	Min.: 1 Mult.: 1
Connectorized Surge Protectors Type N F/F Coaxial RF Surge Protector, 800MHz - 2.5GHz, 300W, IP67, 36 V Max., 1.5mJ, 20kA, Hybrid, Bracket Down, Hole Mount DGXZ+36NFNF-A PolyPhaser 1: $212.94 37In Stock 25Expected 10/6/2026 New Product	Mfr. Part # DGXZ+36NFNF-A Mouser Part # 44-DGXZ+36NFNF-A New Product	PolyPhaser	Connectorized Surge Protectors Type N F/F Coaxial RF Surge Protector, 800MHz - 2.5GHz, 300W, IP67, 36 V Max., 1.5mJ, 20kA, Hybrid, Bracket Down, Hole Mount Learn More about PolyPhaser gx surge protectors	Datasheet	37In Stock 25Expected 10/6/2026	$212.94 $203.94	Min.: 1 Mult.: 1
Connectorized Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, 1.2GHz - 1.6GHz, 10W, IP67, 6 V Max., 175uJ, 15kA, Avalanche Diode GPS+06NFM PolyPhaser 1: $132.55 27In Stock New Product	Mfr. Part # GPS+06NFM Mouser Part # 44-GPS+06NFM New Product	PolyPhaser	Connectorized Surge Protectors Type N F/M Bulkhead Coaxial RF Surge Protector, 1.2GHz - 1.6GHz, 10W, IP67, 6 V Max., 175uJ, 15kA, Avalanche Diode Learn More about PolyPhaser 1 5mhz 6ghz surge protectors	Datasheet	27In Stock	$132.55 $125.72	Min.: 1 Mult.: 1

Circuit Protection

Types of Circuit Protection

Mouser®

Company

Resources

Support