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Surge Protection, Filtration

A surge protector is an appliance designed to protect electrical devices from power surges and voltage spikes. Surge protectors attempt to regulate the voltage supplied to an electric device by either blocking or shorting to ground voltage above a safe threshold. more...

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Surge protectors can be built with one or more of the following electronic components:

  • A fuse burns out or a circuit breaker trips when excessive power is being consumed and fed to a device. These can protect both from surges caused by the device itself and from external surges that last long enough.
  • An iron poor transformer can transmit AC power similar to a normal iron core transformer (although less efficiently), but will be unable to transmit sudden surges that saturate the small iron core.
  • A MOV is a small device that will short out when presented with a sufficiently high voltage, hopefully passing the surge to ground through the MOV rather than through the protected device. Unfortunately, these devices tend to self destruct (and are therefore one-shot devices) with sufficiently strong surges. Many cheap surge protectors only have MOV's, and probably will not survive even a single lightning strike.
  • A zener diode is a small diode designed to protect against normal spikes in a circuit, especially motor controller circuits. These are sometimes paired as a transient voltage suppression diode.
  • A gas discharge tube is used much like a MOV, except that it relies on a trapped gas to become ionized to pass the voltage. This has the advantage of being able to pass much more power without self destructing, but with the disadvantage of reacting to the high voltage more slowly.
  • An Uninterruptible power supply (in addition to other surge protection devices listed above) typically passes external power past the unit's battery, which will absorb spikes much like a capacitor in parallel acts as a low pass filter. (This also keeps the battery charged, and in the event of a failure, the battery can continue to supply power without any interruption otherwise needed to switch it in.) Typically these are the best ones, but are also more expensive.

Read more at Wikipedia.org


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Apc SurgeArrest Surge Protector 8-Outlets 2160 Joules - 6' Power Cord - Ph8Apc SurgeArrest Surge Protector 8-Outlets 2160 Joules - 6' Power Cord - Ph8 $19.99 Eaton Cutler-Hammer Whole House Surge Trap (Chspt2Micro) - NewEaton Cutler-Hammer Whole House Surge Trap (Chspt2Micro) - New $40.00
Eaton Chspcable Home Surge Protection.Eaton Chspcable Home Surge Protection. $89.00 CyberPower Cps1215Rms Rackmount Surge Protector, 120V/15A, 12 Outlets, 15' CableCyberPower Cps1215Rms Rackmount Surge Protector, 120V/15A, 12 Outlets, 15' Cable $49.99
3 Options Power Strip Surge Protector 8 Ac Outlets 3 Usb Ports Type C Port Cable3 Options Power Strip Surge Protector 8 Ac Outlets 3 Usb Ports Type C Port Cable $10.99 to Eaton Surge Protection For Coax Cables Electronics Bi-Directional Led ChspcableEaton Surge Protection For Coax Cables Electronics Bi-Directional Led Chspcable $45.00
Case of 8pcs - Surge Protectors New; 6-Outlet w/8-ft cord Prime Wire & CableCase of 8pcs - Surge Protectors New; 6-Outlet w/8-ft cord Prime Wire & Cable $119.95 Mersen Stp120p07m Surge Protection Device, 1 Phase, 120V Ac, 1 Poles, 2 WiresMersen Stp120p07m Surge Protection Device, 1 Phase, 120V Ac, 1 Poles, 2 Wires $135.99
Cyberpower Ht706Uc 7-Outlet Surge Protector 6 ft. Braided Cord Usb Coax, BlackCyberpower Ht706Uc 7-Outlet Surge Protector 6 ft. Braided Cord Usb Coax, Black $17.99 Tripp-Lite Super7 7-Outlet Surge Protector 7FtTripp-Lite Super7 7-Outlet Surge Protector 7Ft $18.95
Eaton Nnb Chspcable Surge Protection Devices (Spds) Coax Cable Protection 145V EEaton Nnb Chspcable Surge Protection Devices (Spds) Coax Cable Protection 145V E $65.23 Multi-functional Power Strip Surge Protector, 8 Outlets 4Ft Long Extension CordMulti-functional Power Strip Surge Protector, 8 Outlets 4Ft Long Extension Cord $13.49
Tripp Lite Tlp810Net Protect It! 8-Outlet Surge Protector 3,240 Joules 10Ft CordTripp Lite Tlp810Net Protect It! 8-Outlet Surge Protector 3,240 Joules 10Ft Cord $26.98 Monster Home Theater Jp 800 Surge Protector, 8 Outlets, 2160 joules ProtectionMonster Home Theater Jp 800 Surge Protector, 8 Outlets, 2160 joules Protection $34.99
Tripp Lite Protect It! Outlet Surge Protector. Read Description.Tripp Lite Protect It! Outlet Surge Protector. Read Description. $25.00 6-Pack Prime Pb503105 Rotating 6-Outlets 120V/15A/60Hz/1800W/2160J Surge Protect6-Pack Prime Pb503105 Rotating 6-Outlets 120V/15A/60Hz/1800W/2160J Surge Protect $99.00
Ge Tranquell Tle120Y025Wm Surge Protective DeviceGe Tranquell Tle120Y025Wm Surge Protective Device $125.00 Eaton Chspcable Surge Protection For Coax Cables Modem ProtectionEaton Chspcable Surge Protection For Coax Cables Modem Protection $16.00
Tripp Lite Tlm626Tel15 6-Outlet Surge Protector Power Strip 6ft Cable TestedTripp Lite Tlm626Tel15 6-Outlet Surge Protector Power Strip 6ft Cable Tested $147.03 New Square D Tvs12Rmu Accessories Surge Protective Device SurgelogicNew Square D Tvs12Rmu Accessories Surge Protective Device Surgelogic $21.62
Monster FlatScreen PowerProtect Avfl 200 Surge Protector 2 Outlets - 1100 JoulesMonster FlatScreen PowerProtect Avfl 200 Surge Protector 2 Outlets - 1100 Joules $8.99 Eaton Surge Protection For Coax Cables Electronics Modem Protection ChspcableEaton Surge Protection For Coax Cables Electronics Modem Protection Chspcable $24.99
Rj45 Surge Protector Computer Networks Router WiFi Internet Cable Protection PcRj45 Surge Protector Computer Networks Router WiFi Internet Cable Protection Pc $50.00 New Monster Power Surge Protection for Flatscreen Tv Htfs 450New Monster Power Surge Protection for Flatscreen Tv Htfs 450 $32.99
Belkin Be112234-10 Surge Protector Surge SuppressorBelkin Be112234-10 Surge Protector Surge Suppressor $24.97 Furman Ac Power Conditioner Model Ac-215AFurman Ac Power Conditioner Model Ac-215A $70.00
Qo2175Sb Square D Surge Protective Device 22.5 Ka 120/240V 3 Wire NewQo2175Sb Square D Surge Protective Device 22.5 Ka 120/240V 3 Wire New $124.80 Belkin 12 Outlet Surge Protector w/10' Cord 4156J of Protection for Home TheaterBelkin 12 Outlet Surge Protector w/10' Cord 4156J of Protection for Home Theater $17.99
Tripp Lite Isobar 2-6 2 Outlet Surge Protector 6 Foot CordTripp Lite Isobar 2-6 2 Outlet Surge Protector 6 Foot Cord $24.96 Anker Surge Protector Power Strip 2100J 12 Outlets Usb Indoor A9192 - BlackAnker Surge Protector Power Strip 2100J 12 Outlets Usb Indoor A9192 - Black $29.99
Mersen Sp07U550 Surge Protection Devices (Spd) AccessoriesMersen Sp07U550 Surge Protection Devices (Spd) Accessories $74.54 Surge Protector Power Strip with Usb,Ethernet,Cable,Teleph one,Coaxial ProtectionSurge Protector Power Strip with Usb,Ethernet,Cable,Teleph one,Coaxial Protection $32.19
Eaton Nsb Chspfmkit Surge Protection Devices (Spd) Accessories EaEaton Nsb Chspfmkit Surge Protection Devices (Spd) Accessories Ea $42.29 Voltage Protector for Tv, Fridge,Washing Machine & Pc, 2 Usb Low Volt ProtectionVoltage Protector for Tv, Fridge,Washing Machine & Pc, 2 Usb Low Volt Protection $24.90
New ListingPanamax M4300-Pm 9-Outlet Power Conditioner Surge Suppressor Tested WorksNew ListingPanamax M4300-Pm 9-Outlet Power Conditioner Surge Suppressor Tested Works $35.00 CyberPower 7-Outlet Surge Protector 6 ft. Braided Cord Usb CoaxCyberPower 7-Outlet Surge Protector 6 ft. Braided Cord Usb Coax $24.78
Tripp Lite Protect It Surge Protector/Suppressor 8 Outlets 10' Cord 3240 JouleTripp Lite Protect It Surge Protector/Suppressor 8 Outlets 10' Cord 3240 Joule $20.00 Panamax M5300-Pm 11 Outlet Home Theater Power Management Surge Protector - BlackPanamax M5300-Pm 11 Outlet Home Theater Power Management Surge Protector - Black $262.49
Panamax M8-Av Home Theater Power Management Surge protect. Us Authorized DealerPanamax M8-Av Home Theater Power Management Surge protect. Us Authorized Dealer $109.00 Tripp Lite - Surge Potector - Outlets, Coaxial, & Phone Line Protection!Tripp Lite - Surge Potector - Outlets, Coaxial, & Phone Line Protection! $20.00
Furman Pst-2+6 Power Surge Protection / Conditioner. U.S. Authorized DealerFurman Pst-2+6 Power Surge Protection / Conditioner. U.S. Authorized Dealer $59.95 Prime Wire & Cable, Inc. Pb802126 Household Electronics Surge Protectors, 6Prime Wire & Cable, Inc. Pb802126 Household Electronics Surge Protectors, 6 $32.25
Panamax Mr4300 Home Theater Pm Line Conditioner and Surge Protector *Read*Panamax Mr4300 Home Theater Pm Line Conditioner and Surge Protector *Read* $34.95 Eaton Surgetrap Sult12Tc Surge Protector with Coax/Network/Phone ProtectionEaton Surgetrap Sult12Tc Surge Protector with Coax/Network/Phone Protection $39.99
Power Strip with Surge Protection Usb C 6 Outlet Thin Plug 5 Ft Cord for DesktopPower Strip with Surge Protection Usb C 6 Outlet Thin Plug 5 Ft Cord for Desktop $22.99 Heavy Duty 10 Outlet Extender 3150J Surge Protector Wall Adapter Plug 15Ft CableHeavy Duty 10 Outlet Extender 3150J Surge Protector Wall Adapter Plug 15Ft Cable $29.99
Eaton Chsp22 Pack Whole House Surge Protector Chspt2Ultra & Chspcable New In BoxEaton Chsp22 Pack Whole House Surge Protector Chspt2Ultra & Chspcable New In Box $125.00 Eaton Db9 Surge Protection Devices (Spd) AccessoriesEaton Db9 Surge Protection Devices (Spd) Accessories $20.78
New Eaton Chspcable Complete Home Surge Protection for (2) Coax Cable Lines DslNew Eaton Chspcable Complete Home Surge Protection for (2) Coax Cable Lines Dsl $43.95 Eaton Complete Home Surge Trap Cable Protector 20,000 Amp - New In BoxEaton Complete Home Surge Trap Cable Protector 20,000 Amp - New In Box $21.99
$27.90 Lot Of 3 C2 2-Outlet C-Type A/V Power FilterLot Of 3 C2 2-Outlet C-Type A/V Power Filter $75.00
Tripp Lite Surge Protector 120V 12 Outlet Rj11 Rj45 Coax 8' Crd 2880 JouleTripp Lite Surge Protector 120V 12 Outlet Rj11 Rj45 Coax 8' Crd 2880 Joule $71.22 Edco Cx06-Bncy Surge Protection Suppressor Arrestor Cable Line Surge - NewEdco Cx06-Bncy Surge Protection Suppressor Arrestor Cable Line Surge - New $17.00
Schneider Square D Wiser Energy Smart Home Surge Monitor SystemSchneider Square D Wiser Energy Smart Home Surge Monitor System $129.95 CyberPower 12-Outlet Surge Protect 6 ft Braided Cord Usb Coax Black Ht1206Uc2Rc1CyberPower 12-Outlet Surge Protect 6 ft Braided Cord Usb Coax Black Ht1206Uc2Rc1 $21.99
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Prices current as of last update, 04/21/25 2:50pm.

See also...
Monster Power Centers, Surge Protection, Filtration, Accessories & Cables
Other Surge Protection, Surge Protection, Filtration, Accessories & Cables
Power Strips, Surge Protection, Filtration, Accessories & Cables

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