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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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Eaton Surge Protection For Coax Cables Electronics Modem Protection ChspcableEaton Surge Protection For Coax Cables Electronics Modem Protection Chspcable $24.99 Mersen Stp240d07 Surge Protection Device, 3 Phase, 240V Ac, 3 Poles, 4 WiresMersen Stp240d07 Surge Protection Device, 3 Phase, 240V Ac, 3 Poles, 4 Wires $243.99
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 Eaton Cutler-Hammer Whole House Surge Trap (Chspt2Micro) - NewEaton Cutler-Hammer Whole House Surge Trap (Chspt2Micro) - New $50.00
Tripp Lite Protect It! 6-Outlet Surge Protector Coaxial Protection 2160 JoulesTripp Lite Protect It! 6-Outlet Surge Protector Coaxial Protection 2160 Joules $16.00 Intermatic Ig1240Rc3 120-240 V Panel Surge Protector 216936Intermatic Ig1240Rc3 120-240 V Panel Surge Protector 216936 $162.00
New ListingPanamax Mr4300 Home Theater Pm Line Conditioner and Surge Protector *Read*New ListingPanamax Mr4300 Home Theater Pm Line Conditioner and Surge Protector *Read* $34.95 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 $25.00
Furman Pst-2+6 8-Outlet 15 Amp Power Conditioner Surge Protector Noise FilterFurman Pst-2+6 8-Outlet 15 Amp Power Conditioner Surge Protector Noise Filter $37.99 CyberPower Cps1215Rms Rackmount Surge Protector, 120V/15A, 12 Outlets, 15' CableCyberPower Cps1215Rms Rackmount Surge Protector, 120V/15A, 12 Outlets, 15' Cable
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 CyberPower 7-Outlet Surge Protector 6 ft. Braided Cord Usb CoaxCyberPower 7-Outlet Surge Protector 6 ft. Braided Cord Usb Coax $24.78
Monster Power Home Theater Reference Powercenter Surge Protector Hts 1600Monster Power Home Theater Reference Powercenter Surge Protector Hts 1600 $53.95 Panamax M8-Av 8-Home Theatre Power Protector Superior Protection Surge ProtectorPanamax M8-Av 8-Home Theatre Power Protector Superior Protection Surge Protector $59.00
Apc P11Gtv 11-Outlet Surge Protector 3400 Joules Phone, Dsl and Coax ProtectionApc P11Gtv 11-Outlet Surge Protector 3400 Joules Phone, Dsl and Coax Protection $24.99 Panamax M5300-Pm 11 Outlet Clean Power Line Conditioner and Surge ProtectorPanamax M5300-Pm 11 Outlet Clean Power Line Conditioner and Surge Protector $276.96
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 Southwire Surge Guard Protection Model 44270 Rv Power 120V/ 220V 50 Amp PortableSouthwire Surge Guard Protection Model 44270 Rv Power 120V/ 220V 50 Amp Portable $39.95
Eaton Chspcable Home Surge Protection.Eaton Chspcable Home Surge Protection. $89.00 Belkin Power Strip Surge Protector 12 Ac Outlets,10 ft Long Plug (4,156 Joules).Belkin Power Strip Surge Protector 12 Ac Outlets,10 ft Long Plug (4,156 Joules). $18.29
Monster Power Strip Surge Protector with Usb Ports - Heavy Duty ProtectionMonster Power Strip Surge Protector with Usb Ports - Heavy Duty Protection $27.99 to 12-Outlet Surge Protect 6 ft. Braided Cord Usb Coax, Black12-Outlet Surge Protect 6 ft. Braided Cord Usb Coax, Black $23.00
Cyber Power 4-Outlet Surge Protection 6' Braided Easy-Coil Cord Usb & CoaxCyber Power 4-Outlet Surge Protection 6' Braided Easy-Coil Cord Usb & Coax $20.00 Eaton Nsb Chspfmkit Surge Protection Devices (Spd) Accessories EaEaton Nsb Chspfmkit Surge Protection Devices (Spd) Accessories Ea $42.29
2 - Pack Belkin Be112230-08 12-Outlet Power Strip Surge Protector2 - Pack Belkin Be112230-08 12-Outlet Power Strip Surge Protector $35.00 Surge Protector Maxivolt Mvc Icp-301 240Vac 1 or 2 pole 2 wire New (T)Surge Protector Maxivolt Mvc Icp-301 240Vac 1 or 2 pole 2 wire New (T) $55.00
Eaton Chspcable Surge Protection For Coax Cables Modem ProtectionEaton Chspcable Surge Protection For Coax Cables Modem Protection $17.00 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
Tripp Lite Tlm626Tel15 6-Outlet Surge Protector Power Strip 6ft Cable TestedTripp Lite Tlm626Tel15 6-Outlet Surge Protector Power Strip 6ft Cable Tested $147.76 Belkin Be112230-08 Surge Protector 12 Outlet Pho Ethernet Coax Protection (16426Belkin Be112230-08 Surge Protector 12 Outlet Pho Ethernet Coax Protection (16426 $10.68
Panamax Sp8-Av Ac-Telephone-Coax Surge Protect, 6 feet Power Cord w/ 8 OutletsPanamax Sp8-Av Ac-Telephone-Coax Surge Protect, 6 feet Power Cord w/ 8 Outlets $49.95 Staples 7-Outlet Surge Protector Black Tel/Modem/Coax 4ft Cord 33893Staples 7-Outlet Surge Protector Black Tel/Modem/Coax 4ft Cord 33893 $10.99
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 $70.42 Ge Tranquell Tle120Y025Wm Surge Protective DeviceGe Tranquell Tle120Y025Wm Surge Protective Device $125.00
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 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
Panamax M8-Av-Pro Home Theater Power Management (Black) U.S. Authorized DealerPanamax M8-Av-Pro Home Theater Power Management (Black) U.S. Authorized Dealer $119.00 Belkin Be112234-10 Surge Protector Surge SuppressorBelkin Be112234-10 Surge Protector Surge Suppressor $24.97
Tripp Lite Isobar Surge Protector Medical Metal 6 Outlet 15' CordTripp Lite Isobar Surge Protector Medical Metal 6 Outlet 15' Cord $147.98 Tripp Lite | Super7B | Protect It 7 Outlets Surge Protector 7-ft CordTripp Lite | Super7B | Protect It 7 Outlets Surge Protector 7-ft Cord $22.49
New Square D Tvs12Rmu Accessories Surge Protective Device SurgelogicNew Square D Tvs12Rmu Accessories Surge Protective Device Surgelogic $22.07 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
Belkin Be112234-10 12-Outlet slim Surge Protector Ethernet Protection 10ftBelkin Be112234-10 12-Outlet slim Surge Protector Ethernet Protection 10ft $27.55 Insignia Connect and Protect Kit 8 Outlet Surge Protector/Two 8 Ft. Hdmi CablesInsignia Connect and Protect Kit 8 Outlet Surge Protector/Two 8 Ft. Hdmi Cables $18.99
Zettaguard Mini 4-Outlet Travel Power Strip, Surge Protector Usb Charger BlackZettaguard Mini 4-Outlet Travel Power Strip, Surge Protector Usb Charger Black $25.99 Rj45 Surge Protector Computer Networks Router WiFi Internet Cable Protection PcRj45 Surge Protector Computer Networks Router WiFi Internet Cable Protection Pc $50.00
New Belkin Surge Protector 6 Outlets 6ft Cord 600 Joules Surge ProtectionNew Belkin Surge Protector 6 Outlets 6ft Cord 600 Joules Surge Protection $23.99 Eaton Surge Protection For Coax Cables Electronics Bi-Directional Led ChspcableEaton Surge Protection For Coax Cables Electronics Bi-Directional Led Chspcable $45.00
Surge Protector Panamax Md2-C 2 Outlet Ac and Coaxial Protection, NewSurge Protector Panamax Md2-C 2 Outlet Ac and Coaxial Protection, New $29.97 Panamax Mr5100 11-Outlet Power Conditioner with Surge ProtectionPanamax Mr5100 11-Outlet Power Conditioner with Surge Protection $203.93
Intermatic Type 1 or Type 2 Surge Protective Device Ig1240Rc3 NosIntermatic Type 1 or Type 2 Surge Protective Device Ig1240Rc3 Nos $149.95 Surge Protector Wall Plug Splitter with 5 Electrical Outlet Expander for HomeSurge Protector Wall Plug Splitter with 5 Electrical Outlet Expander for Home $13.59
Monster FlatScreen PowerProtect Avfl 200 Surge Protector 2 Outlets - 1100 JoulesMonster FlatScreen PowerProtect Avfl 200 Surge Protector 2 Outlets - 1100 Joules $8.99 Belkin Be112234-10 12-Outlet Surge Protector. Wow! Fully Loaded! And More! A+Belkin Be112234-10 12-Outlet Surge Protector. Wow! Fully Loaded! And More! A+ $29.99
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 Eaton Surgetrap Sult12Tc Surge Protector with Coax/Network/Phone ProtectionEaton Surgetrap Sult12Tc Surge Protector with Coax/Network/Phone Protection $39.99
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
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Prices current as of last update, 03/30/25 1:50pm.

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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