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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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Square D Sdsb80111 Ser. 001 240V Whole house surge protectorSquare D Sdsb80111 Ser. 001 240V Whole house surge protector $225.00 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
Monster Power Hts 1600 8-Outlet Home Theater Reference Surge Protector CenterMonster Power Hts 1600 8-Outlet Home Theater Reference Surge Protector Center $50.00 Tripp Lite 6Spdx 6-Outlet Industrial Surge Protected Power StripTripp Lite 6Spdx 6-Outlet Industrial Surge Protected Power Strip $10.50
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 New! CyberPower 12 Outlet Surge Protector 6 ft Braided Cord, Usb, CoaxNew! CyberPower 12 Outlet Surge Protector 6 ft Braided Cord, Usb, Coax $24.95
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Outdoor Ethernet Poe+ / Rj-45 Surge Protector for Thunder & Lightning ProtectionOutdoor Ethernet Poe+ / Rj-45 Surge Protector for Thunder & Lightning Protection $149.00 12-Outlet Surge Protect 6 ft. Braided Cord Usb Coax, Black12-Outlet Surge Protect 6 ft. Braided Cord Usb Coax, Black $23.00
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 Panamax M5300-Pm Power line conditioner and surge protectorPanamax M5300-Pm Power line conditioner and surge protector $299.95
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Eaton Chspcable Home Surge Protection.Eaton Chspcable Home Surge Protection. $89.00 CyberPower 12-Outlet Surge Protect 6 ft. Braided Cord Usb Coax, BlackCyberPower 12-Outlet Surge Protect 6 ft. Braided Cord Usb Coax, Black $25.00
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Solahd Stv25k24s Surge Protection Device, 1 Phase, 240V, 3 Poles, 2 WiresSolahd Stv25k24s Surge Protection Device, 1 Phase, 240V, 3 Poles, 2 Wires $295.00 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
Rj45 Surge Protector Computer Networks Router WiFi Internet Cable Protection PcRj45 Surge Protector Computer Networks Router WiFi Internet Cable Protection Pc $50.00 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
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 Power Strip Tower Surge Protector with 8 Outlet Usb C 10/15 Ft Extension CordPower Strip Tower Surge Protector with 8 Outlet Usb C 10/15 Ft Extension Cord $27.99 to
Brand New! Commercial Electric 6-Outlet Smart Surge Protector w/ 4 Usb PortsBrand New! Commercial Electric 6-Outlet Smart Surge Protector w/ 4 Usb Ports $16.95 Eaton Surge Protection For Coax Cables Electronics Bi-Directional Led ChspcableEaton Surge Protection For Coax Cables Electronics Bi-Directional Led Chspcable $45.00
Belkin Be112234-10 Surge Protector Surge Suppressor-NewBelkin Be112234-10 Surge Protector Surge Suppressor-New $24.97 Eaton Chspcable Surge Protection For Coax Cables Modem Protection NewEaton Chspcable Surge Protection For Coax Cables Modem Protection New $23.56
Monster Power Home Theater Power Center Ht 800G Power Strip Surge ProtectorMonster Power Home Theater Power Center Ht 800G Power Strip Surge Protector $14.99 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
Eaton Complete Home Surge Protection Chspt2Surge Same Day Shipping!Eaton Complete Home Surge Protection Chspt2Surge Same Day Shipping! $42.55 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
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 CyberPower Professional Surge Protector - 8 Outlet Surge Protector 6ft cordCyberPower Professional Surge Protector - 8 Outlet Surge Protector 6ft cord $20.00
Panamax Miw Power-Pro Pfp In-wall surge protector (Miw-Power-Pro-Pfp)Panamax Miw Power-Pro Pfp In-wall surge protector (Miw-Power-Pro-Pfp) $14.99 Panamax M5400-Pm Power Line Conditioner Surge Protector Voltage Regulator ExclntPanamax M5400-Pm Power Line Conditioner Surge Protector Voltage Regulator Exclnt $349.00
Flat Plug Power Strip with 6 Outlet Long Extension Cord Usb Port Surge ProtectorFlat Plug Power Strip with 6 Outlet Long Extension Cord Usb Port Surge Protector $22.99 to Panamax M8-Av-Pro Hi-Definition 8 Outlet Surge Protector w/ Coax/Sat ProtectionPanamax M8-Av-Pro Hi-Definition 8 Outlet Surge Protector w/ Coax/Sat Protection $119.95
Furman Ac-215A 2 Outlet 10 Amp Power Conditioner Surge Protector Noise FilterFurman Ac-215A 2 Outlet 10 Amp Power Conditioner Surge Protector Noise Filter $108.40 Monster Power Gold 600 w/ Usb Surge Protector - 6 Outlets w/ 2 Usb - 1080 JoulesMonster Power Gold 600 w/ Usb Surge Protector - 6 Outlets w/ 2 Usb - 1080 Joules $15.99
Eaton Nsb Chspfmkit Surge Protection Devices (Spd) Accessories EaEaton Nsb Chspfmkit Surge Protection Devices (Spd) Accessories Ea $42.29 Surge protection device, Surgelogic, Hwa, 100kA, 480Y/277 Vac, 3 phase, 4 wire,Surge protection device, Surgelogic, Hwa, 100kA, 480Y/277 Vac, 3 phase, 4 wire, $1,276.70
New ListingPanamax M5100-Pm Home Theater Power Conditioner W Box Surge 11 Outlet Usb ChargeNew ListingPanamax M5100-Pm Home Theater Power Conditioner W Box Surge 11 Outlet Usb Charge $119.99 New Panamax Md2 2 Outlet Multi-Use Ac Surge Protection and Power FiltrationNew Panamax Md2 2 Outlet Multi-Use Ac Surge Protection and Power Filtration $29.99
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Multi-functional Power Strip Surge Protector, 8 Outlets 4Ft Long Extension CordMulti-functional Power Strip Surge Protector, 8 Outlets 4Ft Long Extension Cord $12.89 Square D Surge Protection Sevice Hepd 1 Phase 3 Wire 25kA 120/240V Spd Type 1Square D Surge Protection Sevice Hepd 1 Phase 3 Wire 25kA 120/240V Spd Type 1 $32.79
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Prices current as of last update, 02/21/25 12:50pm.

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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