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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.
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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Connectorised 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: $123.96 2In Stock 22On Order New Product	Mfr. Part No. IS-B50HN-C0-MA Mouser Part No 44-IS-B50HN-C0-MA New Product	PolyPhaser	Connectorised 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	2In Stock 22On Order On Order Ship Dates Mfr. No: IS-B50HN-C0-MA Stock: 2 Can Dispatch Immediately On Order: 5 Pending 17 Expected 2026/11/02 Factory Lead Time: 2 Weeks	$123.96 $117.58	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: $139.47 3In 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 Learn More about PolyPhaser 1 5mhz 6ghz surge protectors	Datasheet	3In Stock	$139.47 $132.28	Min.: 1 Mult.: 1
Connectorised Surge Protectors Outdoor Twisted Pair Lightning Surge Protector, 5 Pair POTS, xDSL, UL 497B IX-5T PolyPhaser 1: $255.58 3In Stock New Product	Mfr. Part No. IX-5T Mouser Part No 44-IX-5T New Product	PolyPhaser	Connectorised Surge Protectors Outdoor Twisted Pair Lightning Surge Protector, 5 Pair POTS, xDSL, UL 497B	Datasheet	3In Stock	$255.58 $244.78	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: $127.49 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 Learn More about E-T-A eta rex22d t intelligent circuit protectors	Datasheet	4In Stock	$127.49 $106.24 $102.34 $92.81 View $89.05 Quote	Min.: 1 Mult.: 1
Circuit Breakers PDG2,3P,20A,25KA/480V,FXFXTMTU PDG23F0020TFFJ Eaton Electrical 1: $738.75 2In Stock New Product	Mfr. Part No. PDG23F0020TFFJ Mouser Part No 504-PDG23F0020TFFJ New Product	Eaton Electrical	Circuit Breakers PDG2,3P,20A,25KA/480V,FXFXTMTU	Datasheet	2In Stock	$738.75 $611.98 $564.01	Min.: 1 Mult.: 1
Circuit Breakers PDG2,3P,200A,25KA/480V,FXFXTMTU PDG23F0200TFFJ Eaton Electrical 1: $1,339.79 1In Stock New Product	Mfr. Part No. PDG23F0200TFFJ Mouser Part No 504-PDG23F0200TFFJ New Product	Eaton Electrical	Circuit Breakers PDG2,3P,200A,25KA/480V,FXFXTMTU	Datasheet	1In Stock	$1,339.79	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors ESA PROBE-RTD PT1000 3000mm ENG MODEL 10219128-03 TE Connectivity 1: $662.49 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 Learn More about TE Connectivity te surface mount temperature sensors	Datasheet	2In Stock	$662.49 $505.16 $500.59 View Quote	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NTC Mini Ni 0.4 ld 10K 1% blk 0.4e/1e A NTCLE213E3103FHB0A Vishay / BC Components 1: $1.93 422In Stock New Product	Mfr. Part No. NTCLE213E3103FHB0A Mouser Part No 594-NTCLE213E313FHB New Product	Vishay / BC Components	NTC (Negative Temperature Coefficient) Thermistors NTC Mini Ni 0.4 ld 10K 1% blk 0.4e/1e A	Datasheet	422In Stock	$1.93 $1.45 $1.16 $1.09 View $1.06 $0.89 $0.82 $0.755	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors NTC Mini Ni 0.4 ld 12K 2% blk 0.4e/1e A NTCLE213E3123GMB0A Vishay / BC Components 1: $1.17 1,899In Stock New Product	Mfr. Part No. NTCLE213E3123GMB0A Mouser Part No 594-NTCLE23E323GMB New Product	Vishay / BC Components	NTC (Negative Temperature Coefficient) Thermistors NTC Mini Ni 0.4 ld 12K 2% blk 0.4e/1e A	Datasheet	1,899In Stock	$1.17 $0.877 $0.702 $0.661 View $0.644 $0.54 $0.508 $0.466	Min.: 1 Mult.: 1
Connectorised Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 2.0GHz - 6.0GHz, DC Block 10W, 10kA, Blocking Capacitor 111-1010 PolyPhaser 1: $117.08 10In Stock New Product	Mfr. Part No. 111-1010 Mouser Part No 44-111-1010 New Product	PolyPhaser	Connectorised Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 2.0GHz - 6.0GHz, DC Block 10W, 10kA, Blocking Capacitor	Datasheet	10In Stock	$117.08 $111.05	Min.: 1 Mult.: 1
Surge Protection Accessories Hardware Kit, 108-1118B 9100-0453-A PolyPhaser 1: $28.17 26In 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	26In Stock	$28.17 $23.90 $22.83 $20.41	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: $163.56 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 about PolyPhaser dc 7ghz rf coaxial surge protectors	Datasheet	9In Stock	$163.56 $155.14	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: $203.51 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 about PolyPhaser gx surge protectors	Datasheet	5In Stock	$203.51 $194.91	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: $160.13 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	$160.13 $151.88	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: $299.76 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	$299.76 $287.09	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: $113.63 6In 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 about PolyPhaser is b50 surge protectors	Datasheet	6In Stock	$113.63 $107.78	Min.: 1 Mult.: 1
Circuit Breaker Accessories 508, DM, 20A, Distribution Module, Load, ATEX PM12-T01-00-LOAD-20A-E E-T-A 1: $48.54 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	$48.54 $40.26 $37.13 $30.04 View $29.78 $28.69 Quote	Min.: 1 Mult.: 1
Circuit Breakers 508,DM,24VDC,CL,20A,ATX REX22D-TA1-100-DC24V-20A-E E-T-A 1: $105.10 7In 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 about E-T-A eta rex22d t intelligent circuit protectors	Datasheet	7In Stock	$105.10 $89.96 $86.27 $78.39 View $75.77 Quote	Min.: 1 Mult.: 1
Circuit Breakers CH GFCI BREAKER, 30A, PIGTAIL, 10KAIC CHFN130GF Eaton Electrical 1: $482.62 1In Stock New Product	Mfr. Part No. CHFN130GF Mouser Part No 504-CHFN130GF New Product	Eaton Electrical	Circuit Breakers CH GFCI BREAKER, 30A, PIGTAIL, 10KAIC		1In Stock	$482.62 $399.80 $368.60 View Quote	Min.: 1 Mult.: 1
Circuit Breakers FAZ UL 1077 2P 2.5A D CURVE Eaton Electrical FAZ-D2.5/2 FAZ-D2.5/2 Eaton Electrical 1: $431.97 1In Stock New Product	Mfr. Part No. FAZ-D2.5/2 Mouser Part No 504-FAZ-D2.5/2 New Product	Eaton Electrical	Circuit Breakers FAZ UL 1077 2P 2.5A D CURVE	Datasheet	1In Stock	$431.97 $357.84 $329.79	Min.: 1 Mult.: 1
Circuit Breakers HFD-DC BREAKER - LINE & LOAD TERMINALS HFDDC1060L Eaton Electrical 1: $810.13 1In Stock New Product	Mfr. Part No. HFDDC1060L Mouser Part No 504-HFDDC1060L New Product	Eaton Electrical	Circuit Breakers HFD-DC BREAKER - LINE & LOAD TERMINALS	Datasheet	1In Stock	$810.13 $651.15 $622.11 View Quote	Min.: 1 Mult.: 1
Circuit Breakers PDD2,3P, 100A, 100KA/240V, 50C FXFXTMTU PDD23M0100VFFL Eaton Electrical 1: $907.36 1In Stock New Product	Mfr. Part No. PDD23M0100VFFL Mouser Part No 504-PDD23M0100VFFL New Product	Eaton Electrical	Circuit Breakers PDD2,3P, 100A, 100KA/240V, 50C FXFXTMTU	Datasheet	1In Stock	$907.36 $751.67 $693.02 View Quote	Min.: 1 Mult.: 1
Circuit Breakers PDG2,3P,35A,25KA/480V,FXFXTMTU PDG23F0035TFFJ Eaton Electrical 1: $776.40 2In Stock New Product	Mfr. Part No. PDG23F0035TFFJ Mouser Part No 504-PDG23F0035TFFJ New Product	Eaton Electrical	Circuit Breakers PDG2,3P,35A,25KA/480V,FXFXTMTU	Datasheet	2In Stock	$776.40 $611.98 $564.22 View Quote	Min.: 1 Mult.: 1
NTC (Negative Temperature Coefficient) Thermistors ESA PROBE-RTD PT1000 1000mm ENG MODEL 10219128-01 TE Connectivity 1: $498.49 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 about TE Connectivity te surface mount temperature sensors	Datasheet	1In Stock	$498.49 $399.94 $396.33 View Quote	Min.: 1 Mult.: 1
Surge Protection Accessories L-Shaped Adapter BF-ADAPTER PolyPhaser 1: $29.81 18In Stock New Product	Mfr. Part No. BF-ADAPTER Mouser Part No 44-BF-ADAPTER New Product	PolyPhaser	Surge Protection Accessories L-Shaped Adapter Learn More about PolyPhaser surge protector accessories	Datasheet	18In Stock	$29.81 $25.31 $24.17 $21.61	Min.: 1 Mult.: 1

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Circuit Protection

Types of Circuit Protection