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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.
Surge Protection Accessories Flange to Bulkhead Type 4.3-10 Adapter Kit BF4310 PolyPhaser 1: $53.16 7In 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 about PolyPhaser surge protector accessories	Datasheet	7In Stock	$53.16 $49.92 $48.31	Min.: 1 Mult.: 1
Surge Protection Accessories Kit Flange to Bulkhead DIN Adapter BFD PolyPhaser 1: $39.55 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 about PolyPhaser surge protector accessories	Datasheet	24In Stock	$39.55 $36.90 $35.36 $35.35 Quote Quote	Min.: 1 Mult.: 1
Connectorised Surge Protectors Type N F/F Coaxial RF Surge Protector, 800MHz - 2.5GHz, 300W, IP67, 24 V Max., 25uJ, 20kA, Hybrid, Bracket Down, Hole Mount DGXJ+24NFNF-A PolyPhaser 1: $191.09 3In Stock New Product	Mfr. Part No. DGXJ+24NFNF-A Mouser Part No 44-DGXJ+24NFNF-A New Product	PolyPhaser	Connectorised Surge Protectors Type N F/F Coaxial RF Surge Protector, 800MHz - 2.5GHz, 300W, IP67, 24 V Max., 25uJ, 20kA, Hybrid, Bracket Down, Hole Mount Learn More about PolyPhaser gx surge protectors	Datasheet	3In Stock	$191.09 $181.25	Min.: 1 Mult.: 1
Connectorised Surge Protectors Type N F/M Coaxial RF Surge Protector, 800MHz - 2.5GHz, 300W, IP67, 15 V Max., 500uJ, 20kA, Hybrid, Bracket Down, Hole Mount DGXZ+15NFNM-A PolyPhaser 1: $258.69 1In Stock New Product	Mfr. Part No. DGXZ+15NFNM-A Mouser Part No 44-DGXZ+15NFNM-A New Product	PolyPhaser	Connectorised Surge Protectors Type N F/M Coaxial RF Surge Protector, 800MHz - 2.5GHz, 300W, IP67, 15 V Max., 500uJ, 20kA, Hybrid, Bracket Down, Hole Mount Learn More about PolyPhaser gx surge protectors	Datasheet	1In Stock	$258.69 $247.75	Min.: 1 Mult.: 1
Connectorised Surge Protectors 7/16 F/M Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, 1.5kW, IP67, 30 V Max., 25mJ, 30kA, Filter, Low PIM -155 dBc ESXDC-DFM PolyPhaser 1: $190.86 5In Stock New Product	Mfr. Part No. ESXDC-DFM Mouser Part No 44-ESXDC-DFM New Product	PolyPhaser	Connectorised Surge Protectors 7/16 F/M Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, 1.5kW, IP67, 30 V Max., 25mJ, 30kA, Filter, Low PIM -155 dBc Learn More about PolyPhaser 650mhz 2 7ghz surge protectors	Datasheet	5In Stock	$190.86 $182.79	Min.: 1 Mult.: 1
Connectorised Surge Protectors TNC F/M Bulkhead Coaxial RF Surge Protector, DC - 7GHz, DC Pass, 90W, IP67, 4mJ, 20kA, Gas Discharge Tube GT-TFM-AL PolyPhaser 1: $98.12 5In Stock New Product	Mfr. Part No. GT-TFM-AL Mouser Part No 44-GT-TFM-AL New Product	PolyPhaser	Connectorised Surge Protectors TNC F/M Bulkhead Coaxial RF Surge Protector, DC - 7GHz, DC Pass, 90W, IP67, 4mJ, 20kA, Gas Discharge Tube Learn More about PolyPhaser dc 7ghz rf coaxial surge protectors	Datasheet	5In Stock	$98.12 $93.06	Min.: 1 Mult.: 1
Connectorised Surge Protectors Outdoor Twisted Pair Lightning Surge Protector, 2 Pair Dual Telco Trunk, UL 497B IX-2T PolyPhaser 1: $182.97 1In Stock New Product	Mfr. Part No. IX-2T Mouser Part No 44-IX-2T New Product	PolyPhaser	Connectorised Surge Protectors Outdoor Twisted Pair Lightning Surge Protector, 2 Pair Dual Telco Trunk, UL 497B	Datasheet	1In Stock	$182.97 $175.23	Min.: 1 Mult.: 1
Connectorised Surge Protectors 7/16 F/F Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, DC Block, 500W, IP67, .005uJ, 40kA, Filter, Low PIM TSX-DFF PolyPhaser 1: $189.37 4In Stock New Product	Mfr. Part No. TSX-DFF Mouser Part No 44-TSX-DFF New Product	PolyPhaser	Connectorised Surge Protectors 7/16 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	4In Stock	$189.37 $179.61	Min.: 1 Mult.: 1
Connectorised Surge Protectors 7/16 F/M Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, DC Block, 500W, IP67, .005uJ, 40kA, Filter, Low PIM, w/ Bracket TSX-DFM-BF PolyPhaser 1: $195.59 6In Stock New Product	Mfr. Part No. TSX-DFM-BF Mouser Part No 44-TSX-DFM-BF New Product	PolyPhaser	Connectorised Surge Protectors 7/16 F/M Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, DC Block, 500W, IP67, .005uJ, 40kA, Filter, Low PIM, w/ Bracket Learn More about PolyPhaser 650mhz 2 7ghz surge protectors	Datasheet	6In Stock	$195.59 $187.32	Min.: 1 Mult.: 1
Connectorised Surge Protectors 4.3-10 F/F Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, 500W, IP67, 80 V Max., 1mJ, 40kA, Filter, Low PIM TSXDC-4310FF PolyPhaser 1: $190.86 4In Stock New Product	Mfr. Part No. TSXDC-4310FF Mouser Part No 44-TSXDC-4310FF New Product	PolyPhaser	Connectorised Surge Protectors 4.3-10 F/F Bulkhead Coaxial RF Surge Protector, 698MHz - 2.7GHz, 500W, IP67, 80 V Max., 1mJ, 40kA, Filter, Low PIM Learn More about PolyPhaser 650mhz 2 7ghz surge protectors	Datasheet	4In Stock	$190.86 $182.79	Min.: 1 Mult.: 1
Circuit Breaker Accessories 508, DM, 40A Distribution Module Standard, without Aux, ATEX EM12-T00-000-DC24V-40A-E E-T-A 1: $41.85 7In Stock New Product	Mfr. Part No. EM12-T00-000-DC24V-40A-E Mouser Part No 457-EM12T00DC24V4AE New Product	E-T-A	Circuit Breaker Accessories 508, DM, 40A Distribution Module Standard, without Aux, ATEX	Datasheet	7In Stock	$41.85 $34.87 $34.06 $31.05 View $30.08 $28.83 Quote	Min.: 1 Mult.: 1
Circuit Breaker Accessories 508, DM, 20A, Distribution Module, GND - OV PM12-T03-00-GND-20A-E E-T-A 1: $35.79 11In Stock New Product	Mfr. Part No. PM12-T03-00-GND-20A-E Mouser Part No 457-PM12T0300GND2AE New Product	E-T-A	Circuit Breaker Accessories 508, DM, 20A, Distribution Module, GND - OV	Datasheet	11In Stock	$35.79 $27.41 $25.48	Min.: 1 Mult.: 1
Circuit Breakers 508,DM,24VDC,CL,16A,ATX REX22D-TA1-100-DC24V-16A-E E-T-A 1: $105.08 14In Stock New Product	Mfr. Part No. REX22D-TA1-100-DC24V-16A-E Mouser Part No 457-REX22DTA116E New Product	E-T-A	Circuit Breakers 508,DM,24VDC,CL,16A,ATX Learn More about E-T-A eta rex22d t intelligent circuit protectors	Datasheet	14In Stock	$105.08 $89.94 $89.32 $78.37 View $75.76 Quote	Min.: 1 Mult.: 1
Circuit Breakers 508,DM,24VDC,CL,2,3,4..6,8,10,ATX REX22D-TD2-100-DC24V-2/3/4A - 6/8/10A-E E-T-A 1: $127.47 4In Stock New Product	Mfr. Part No. REX22D-TD2-100-DC24V-2/3/4A - 6/8/10A-E Mouser Part No 457-REX22DTD2234681E New Product	E-T-A	Circuit Breakers 508,DM,24VDC,CL,2,3,4..6,8,10,ATX Learn More about E-T-A eta rex22d t intelligent circuit protectors	Datasheet	4In Stock	$127.47 $106.22 $102.32 $92.79 View $89.03 Quote	Min.: 1 Mult.: 1
Circuit Breakers 508,DM,24VDC,CL,2-4-6,ATX REX22D-TD2-100-DC24V-2A/4A/6A-E E-T-A 1: $127.47 13In Stock New Product	Mfr. Part No. REX22D-TD2-100-DC24V-2A/4A/6A-E Mouser Part No 457-REX22DTD22A4A6AE New Product	E-T-A	Circuit Breakers 508,DM,24VDC,CL,2-4-6,ATX Learn More about E-T-A eta rex22d t intelligent circuit protectors	Datasheet	13In Stock	$127.47 $108.35 $92.79 $89.05 View Quote	Min.: 1 Mult.: 1
Circuit Breakers 508,DM,24VDC,CL,2CH,1-3.6,CL2,ATX REX22D-TE2-100-DC24V-1A-3,6A-CL2-E E-T-A 1: $103.82 9In Stock New Product	Mfr. Part No. REX22D-TE2-100-DC24V-1A-3,6A-CL2-E Mouser Part No 457-REX22DTE2136CLE New Product	E-T-A	Circuit Breakers 508,DM,24VDC,CL,2CH,1-3.6,CL2,ATX Learn More about E-T-A eta rex22d t intelligent circuit protectors	Datasheet	9In Stock	$103.82 $86.54 $80.58	Min.: 1 Mult.: 1
Industrial & Electrical Fuses DBU 27.0KV SLOW SPEED "E" EXPL FUSE 200A DBU27-200SE Eaton Electrical 1: $581.97 1In Stock New Product	Mfr. Part No. DBU27-200SE Mouser Part No 504-DBU27-200SE New Product	Eaton Electrical	Industrial & Electrical Fuses DBU 27.0KV SLOW SPEED "E" EXPL FUSE 200A	Datasheet	1In Stock	$581.97 $482.17 $444.30	Min.: 1 Mult.: 1
Circuit Breakers E 3P 50A 25kA 415&480V FXD therm FXD mag EGE3050FFG Eaton Electrical 1: $1,093.04 1In Stock New Product	Mfr. Part No. EGE3050FFG Mouser Part No 504-EGE3050FFG New Product	Eaton Electrical	Circuit Breakers E 3P 50A 25kA 415&480V FXD therm FXD mag	Datasheet	1In Stock	$1,093.04	Min.: 1 Mult.: 1
Circuit Breakers FDB 3P 20A TRIP, 600V CLASS, LINE & LOAD FDB3020L Eaton Electrical 1: $1,380.40 1In Stock New Product	Mfr. Part No. FDB3020L Mouser Part No 504-FDB3020L New Product	Eaton Electrical	Circuit Breakers FDB 3P 20A TRIP, 600V CLASS, LINE & LOAD	Datasheet	1In Stock	$1,380.40	Min.: 1 Mult.: 1
Connectorised 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 6In Stock New Product	Mfr. Part No. 109-0501W-D Mouser Part No 44-109-0501W-D New Product	PolyPhaser	Connectorised Surge Protectors Type N F/F Bulkhead Coaxial RF Surge Protector, 700MHz to 1000MHz, Telemetry, DC Pass, 15V, IP67, 20kA, Hybrid, Flange Mount	Datasheet	6In Stock	$172.15 $163.28	Min.: 1 Mult.: 1
Connectorised 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 22In Stock 5On Order New Product	Mfr. Part No. AL-LSXM-MA Mouser Part No 44-AL-LSXM-MA New Product	PolyPhaser	Connectorised Surge Protectors Type N M/F Bulkhead Coaxial RF Surge Protector, 2GHz - 6GHz, DC Block, 10W, IP67, .5uJ, 10kA, Filter Learn More about PolyPhaser 2ghz 6ghz surge protectors	Datasheet	22In Stock 5On Order	$73.11 $69.22	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: $257.12 5In 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 Learn More about PolyPhaser tsx ht hemp tested rf surge protectors	Datasheet	5In Stock	$257.12 $246.24	Min.: 1 Mult.: 1
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: $123.94 2In Stock 43On 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 43On Order On Order Ship Dates Mfr. No: IS-B50HN-C0-MA Stock: 2 Can Dispatch Immediately On Order: 5 Pending 17 Expected 02/11/2026 21 Expected 09/11/2026 Factory Lead Time: 2 Weeks	$123.94 $117.56	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: $139.44 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	$139.44 $132.25	Min.: 1 Mult.: 1
Connectorised Surge Protectors Outdoor Twisted Pair Lightning Surge Protector, 5 Pair POTS, xDSL, UL 497B IX-5T PolyPhaser 1: $255.54 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	$255.54 $244.73	Min.: 1 Mult.: 1

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Circuit Protection

Types of Circuit Protection