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A summer storm can push a surge down a coax line into a television or down DC wiring into a solar charge controller, and the best surge protector for lightning strikes is the one that matches the line it guards. We compared five surge protectors: two DC solar units rated at 40kA and three coax units for television and satellite lines, plus five more options covering coax, Ethernet, outlet and camera lines. The CNLonQcom DC unit leads because it pairs a 40kA discharge current with a 2-year warranty in a 2-pack, and the Proxicast coax arrester follows with a gas discharge tube rated from 0 to 3 GHz.
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Quick picks
Best Overall CNLonQcom 40KA DC 1000V 2-Pack: 40kA DC 1000V protection with a 2-year warranty in a 2-pack Check price on Amazon
Best Coax Pick Proxicast 230V Coax Arrester: gas discharge tube with multi-strike capability, rated 0 to 3 GHz Check price on Amazon
Best Single DC Unit IGOYE 40KA DC 1000V 1-Pack: 40kA discharge current with a visual window and plug-and-pull design Check price on Amazon
Best Four-Pack groword Coax Protector 4-Pack: four protectors with nickel-plated brass and less than 0.4dB loss Check price on Amazon
The kits we chose
| # | Product | Solar Score | Buy |
|---|---|---|---|
| 1 | CNLonQcom 40KA DC 1000V 2-Pack | 9.7/10 | Buy on Amazon |
| 2 | Proxicast 230V Coax Arrester | 9.6/10 | Buy on Amazon |
| 3 | IGOYE 40KA DC 1000V 1-Pack | 9.6/10 | Buy on Amazon |
| 4 |  Voluty Tek Coax Arrester 2-Pack | 9.5/10 | Buy on Amazon |
| 5 | groword Coax Protector 4-Pack | 9.5/10 | Buy on Amazon |
CNLonQcom 40KA DC 1000V 2-Pack
A 2-pack of 2P 40kA DC 1000V solar surge protectors for 35mm DIN rail mounting in a distribution box.
Pros
- 40kA stated for DC 1000V solar lines
- Two units in the box for two lines or a spare
- Flame-retardant PC shell stated as fire-resistant and corrosion-resistant
- Copper components stated for conductivity
Cons
- DIN rail mounting needs a distribution box with a 35mm rail
- DC only, with no use on coax or AC outlet lines
- Sold as a 2-pack, so a single unit cannot be ordered alone
- No visual status window is stated for checking the unit at a glance
Detailed Review
The listing states a 2P 40kA surge protector for DC 1000V solar lines, sold as a 2-pack for 35mm DIN rail mounting in a distribution box. It states copper components, a flame-retardant PC shell that is fire-resistant and corrosion-resistant, and a 2-year manufacturer warranty. The maker says it shields electrical systems and load devices from lightning strikes and sudden voltage surges.
Who it's for: RV and home solar owners who need DC 1000V protection on a DIN rail and want two units in one order. Who should skip it: buyers who need coax or outlet protection, which this DC unit does not cover.
Its Solar Score of 9.7/10 comes from performance 32/35, build 21/25, value 22/25, safety 7/10 and warranty 2/5: 84 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Discharge current | 40kA |
|---|---|
| Voltage | DC 1000V |
| Mounting | 35mm DIN rail |
| Pack | 2 pcs |
Taken from the seller's listing on 15 November 2026. Capacity and output figures are rated by the manufacturer.
Safety and Warranty
What this listing states. Flame-retardant PC shell, fire-resistant and corrosion-resistant, stated, so safety scores 7 of 10. 2 year manufacturer warranty stated. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 2 of 5. See How We Pick.
Follow the manual. Connect and use the product as the maker describes, stay within every stated rating, and read the manual before first use.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
Proxicast 230V Coax Arrester
A 75 Ohm F-male to F-female coax arrester with a 230V gas discharge tube for television, cable modem and satellite lines.
Pros
- Gas discharge tube with multi-strike capability stated
- Rated from 0 to 3 GHz for TV, satellite and cable modem lines
- Outdoor rated for in-line use with bi-directional protection
- F-type male and female connectors fit RG6, RG59, RG8X and RG11 cable
Cons
- Coax only, with no use on DC solar or AC outlet lines
- Only a 1-year warranty is stated
- Not for SMA antennas
- Single unit, so each line needs its own arrester
Detailed Review
The listing states a 230V gas discharge tube arrester with 75 Ohm F-type male and female connectors, rated from 0 to 3 GHz, for television, cable modems and satellite dish antennas. It states bi-directional protection, very low RF insertion loss, DC pass-through at 230V, multi-strike capability, and that it is outdoor rated for in-line use. It also states compatibility with 4G and 5G signal boosters that have 75 Ohm F-connector outdoor antennas, and a 1-year warranty.
Who it's for: owners who want coax protection on a television, cable modem or satellite line with a gas discharge tube. Who should skip it: buyers with SMA antennas or DC solar lines, which this arrester does not cover.
Its Solar Score of 9.6/10 comes from performance 30/35, build 21/25, value 21/25, safety 7/10 and warranty 2/5: 81 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Voltage | 230V gas discharge tube |
|---|---|
| Impedance | 75 Ohm |
| Frequency | 0 to 3 GHz |
| Connectors | F-male to F-female |
Taken from the seller's listing on 15 November 2026. Capacity and output figures are rated by the manufacturer.
Safety and Warranty
What this listing states. Gas discharge tube with multi-strike capability, outdoor rated, shunts surges to ground, stated, so safety scores 7 of 10. 1 year warranty stated. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 2 of 5. See How We Pick.
Follow the manual. Connect and use the product as the maker describes, stay within every stated rating, and read the manual before first use.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
IGOYE 40KA DC 1000V 1-Pack
A single 2P 40kA DC 1000V solar surge protector with a visual window and plug-and-pull design for 35mm DIN rail mounting.
Pros
- 40kA maximum discharge current stated for DC 1000V solar lines
- Visual window shows the product status at a glance
- Plug-and-pull design for maintenance and replacement
- Flame-retardant PC shell stated as fire-resistant and corrosion-resistant
Cons
- No warranty term is stated
- Single unit, so each line needs its own protector
- DC only, with no use on coax or AC outlet lines
- DIN rail mounting needs a distribution box with a 35mm rail
Detailed Review
The listing states a single 2P 40kA surge protector for DC 1000V solar lines, with a visual window for easy observation of product status and a plug-and-pull design for maintenance and replacement. It states a flame-retardant PC shell that is fire-resistant and corrosion-resistant, copper components, and 35mm DIN rail mounting. No warranty term is stated.
Who it's for: solar owners who want one DC 1000V unit with a status window for easy checks. Who should skip it: buyers who want a stated warranty term or a multi-pack.
Its Solar Score of 9.6/10 comes from performance 30/35, build 21/25, value 20/25, safety 7/10 and warranty 0/5: 78 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Discharge current | 40kA maximum |
|---|---|
| Voltage | 1000VDC max |
| Mounting | 35mm DIN rail |
| Pack | 1 pc |
Taken from the seller's listing on 15 November 2026. Capacity and output figures are rated by the manufacturer.
Safety and Warranty
What this listing states. Flame-retardant PC shell, fire-resistant and corrosion-resistant, stated, so safety scores 7 of 10. No warranty term, so warranty scores zero. See How We Pick.
Follow the manual. Connect and use the product as the maker describes, stay within every stated rating, and read the manual before first use.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
Voluty Tek Coax Arrester 2-Pack
A 2-pack of 75 Ohm F-type coax surge protectors for TV antennas and satellite receivers, with a grounding wire included.
Pros
- Grounding wire included in the box
- Supports frequencies up to 2400MHz without interfering with the TV signal
- Two protectors in the box for two lines or a spare
- F-type connectors fit satellite, cable TV, digital TV antennas, modems and routers
Cons
- No warranty term is stated
- Coax only, with no use on DC solar or AC outlet lines
- No discharge current figure is stated
- The included grounding wire needs a ground point to connect to
Detailed Review
The listing states a 2-pack of 75 Ohm F-type coax surge protectors for TV antennas, satellite receivers and similar equipment, with a grounding wire included. It states support for frequencies up to 2400MHz without interfering with the TV signal or internet data, and wide compatibility with satellite, cable TV, digital TV antennas, modems, routers and signal amplifiers. No warranty term is stated.
Who it's for: owners who want two coax protectors with a grounding wire for television and satellite lines. Who should skip it: buyers who need DC solar protection or a stated warranty term.
Its Solar Score of 9.5/10 comes from performance 28/35, build 19/25, value 21/25, safety 4/10 and warranty 0/5: 72 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Impedance | 75 Ohm |
|---|---|
| Frequency | Up to 2400MHz |
| Connectors | F-type, in-line |
| Pack | 2 pcs |
Taken from the seller's listing on 15 November 2026. Capacity and output figures are rated by the manufacturer.
Safety and Warranty
What this listing states. Grounding wire included, stated, so safety scores 4 of 10. No warranty term, so warranty scores zero. See How We Pick.
Follow the manual. Connect and use the product as the maker describes, stay within every stated rating, and read the manual before first use.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
groword Coax Protector 4-Pack
A 4-pack of 75 Ohm F-type coax surge protectors for cable boxes, satellite receivers and distribution amplifiers.
Pros
- Four protectors in the box for four lines or spares
- Nickel-plated brass stated as durable and corrosion-resistant
- Less than 0.4dB loss stated across 5-2400MHz
- F-type male to female connectors fit cable boxes, satellite receivers and splitters
Cons
- Coax only, with no use on DC solar or AC outlet lines
- Sold as a 4-pack, so a single unit cannot be ordered alone
- Frequency range tops out at 2400MHz, below the 0 to 3 GHz of the Proxicast arrester
- F-type male to female only, so F-female to F-female runs need a different arrester
Detailed Review
The listing states a 4-pack of 75 Ohm F-type male to female coax surge protectors for cable boxes, satellite receivers, distribution amplifiers and splitters. It states nickel-plated brass construction that is durable and corrosion-resistant, less than 0.4dB loss across 5-2400MHz, and use on CATV, MATV, SATV, cable network and satellite TV equipment. No warranty term is stated.
Who it's for: owners who want four coax protectors for several cable boxes, receivers and amplifiers. Who should skip it: buyers who need DC solar protection or a stated warranty term.
Its Solar Score of 9.5/10 comes from performance 28/35, build 20/25, value 22/25, safety 0/10 and warranty 0/5: 70 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Impedance | 75 Ohm |
|---|---|
| Frequency | 5-2400MHz |
| Insertion loss | Less than 0.4dB |
| Pack | 4 pcs |
Taken from the seller's listing on 15 November 2026. Capacity and output figures are rated by the manufacturer.
Safety and Warranty
What this listing states. This product does not plug in or run on a battery, so safety is not part of its score. No warranty term, so warranty scores zero. See How We Pick.
Follow the manual. Connect and use the product as the maker describes, stay within every stated rating, and read the manual before first use.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
As an Amazon Associate I earn from qualifying purchases.
More picks to compare
Proxicast 230V Coax Arrester F-FFor F-female to F-female coax runs needing 230V gas discharge tube protection.Check on Amazon
Awishwell Ethernet Surge ProtectorFor gigabit Ethernet runs that need 20KA surge protection with PoE++ support.Check on Amazon
VCE Coax Surge Protector 2-PackFor coax runs that need 5kA nominal and 10kA max discharge current.Check on Amazon
BXST Outlet Surge Protector 140JFor a single outlet needing 140J surge protection with under and over voltage cutoffs.Check on Amazon
CERRXIAN DC12V Camera ProtectorFor 12V DC camera and CCTV runs that need 10kA surge protection.Check on Amazon
Numbers side by side
| Surge protector | Solar Score | Type | Discharge | Frequency | Pack | Warranty | Amazon |
|---|---|---|---|---|---|---|---|
| CNLonQcom 40KA DC 1000V 2-Pack | 9.7/10 | DC 1000V SPD | 40kA | Not stated | 2 pcs | 2 year | View on Amazon |
| Proxicast 230V Coax Arrester | 9.6/10 | Coax arrester | Not stated | 0-3 GHz | 1 pc | 1 year | View on Amazon |
| IGOYE 40KA DC 1000V 1-Pack | 9.6/10 | DC 1000V SPD | 40kA | Not stated | 1 pc | Not stated | View on Amazon |
| Voluty Tek Coax Arrester 2-Pack | 9.5/10 | Coax arrester | Not stated | Up to 2400MHz | 2 pcs | Not stated | View on Amazon |
| groword Coax Protector 4-Pack | 9.5/10 | Coax arrester | Not stated | 5-2400MHz | 4 pcs | Not stated | View on Amazon |
These specs are rated by the maker and quoted from each listing on 15 November 2026.
Where the points went
The Solar Score weighs performance, build, value, safety and warranty. For a surge protector, safety means stated safety features such as a gas discharge tube, a flame-retardant housing and a grounding wire; a unit that states none scores zero on that line, whatever its discharge current. Two of the five protectors state a warranty term. How we pick explains the weights.
| Product | Solar Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| CNLonQcom 40KA DC 1000V 2-Pack | 9.7 | 32 | 21 | 22 | 7 | 2 |
| Proxicast 230V Coax Arrester | 9.6 | 30 | 21 | 21 | 7 | 2 |
| IGOYE 40KA DC 1000V 1-Pack | 9.6 | 30 | 21 | 20 | 7 | 0 |
| Voluty Tek Coax Arrester 2-Pack | 9.5 | 28 | 19 | 21 | 4 | 0 |
| groword Coax Protector 4-Pack | 9.5 | 28 | 20 | 22 | 0 | 0 |
Every total is translated into a figure between 9.2 and 9.8 with a linear formula; ranking by points and ranking by score always agree.
How to choose the best surge protector for lightning strikes
Match the protector to the line
Start with the line you need to guard. The CNLonQcom 2-pack and the IGOYE single unit are DC 1000V surge protectors for solar lines on a 35mm DIN rail, while the Proxicast, Voluty Tek and groword units are 75 Ohm F-type coax arresters for television, satellite and cable modem lines. Ethernet lines need an RJ45 unit such as the Awishwell Ethernet protector, and a wall outlet needs a 120V plug unit such as the BXST outlet protector. The Proxicast F-female to F-female arrester covers runs where both ends use F-female connectors. See what power surge protection is before you match a unit to a line, and our best surge protector for RV guide for the RV side.
Read the discharge current and the frequency range
For DC solar lines, the discharge current is the figure to compare: both DC units here state 40kA. For coax lines, the frequency range is the figure: the Proxicast covers 0 to 3 GHz, the groword 4-pack covers 5-2400MHz, and the Voluty Tek pair covers up to 2400MHz. The VCE 2-pack states 5kA nominal and 10kA max discharge current with 6kV all-port protection.
| Protector | Discharge | Frequency |
|---|---|---|
| CNLonQcom 40KA DC 1000V 2-Pack | 40kA | Not stated |
| Proxicast 230V Coax Arrester | Not stated | 0-3 GHz |
| IGOYE 40KA DC 1000V 1-Pack | 40kA | Not stated |
| Voluty Tek Coax Arrester 2-Pack | Not stated | Up to 2400MHz |
| groword Coax Protector 4-Pack | Not stated | 5-2400MHz |
Check the warranty and the pack size
Two of the five protectors state a warranty term: the CNLonQcom states a 2-year manufacturer warranty and the Proxicast states a 1-year warranty. The IGOYE, Voluty Tek and groword listings state no warranty term. Pack size matters too: the CNLonQcom and Voluty Tek come as 2-packs and the groword as a 4-pack, so count your lines before you order. See is a surge protector necessary for when a protector earns its place.
Mind the mounting and the ground
The DC units mount on a 35mm DIN rail inside a distribution box, and the coax units connect in-line with F-type connectors. The Voluty Tek pair includes a grounding wire, and the Proxicast arrester shunts surges, transients and lightning energy to ground. A DIN rail unit that ties into a distribution box should be installed by a licensed electrician.
Sizing Notes
- Match the protector to the line voltage: the DC units state DC 1000V and the Proxicast coax arrester states a 230V DC pass-through.
- Match the connector: 75 Ohm F-type for the coax arresters and a 35mm DIN rail for the DC units.
- Count the lines before you order: the CNLonQcom and Voluty Tek come as 2-packs and the groword as a 4-pack.
- Check the warranty term before you buy: the CNLonQcom states 2 years and the Proxicast states 1 year, while the other three state no term.
FAQ: power away from the grid
Which surge protector here has the highest discharge current?
The CNLonQcom 2-pack and the IGOYE single unit both state a 40kA maximum discharge current at DC 1000V. The VCE 2-pack states 10kA max and the Awishwell Ethernet unit states 20KA, both below the 40kA DC units.
Which coax arrester covers the widest frequency range?
The Proxicast ProGrade arrester is rated from 0 to 3 GHz, ahead of the VCE 2-pack at 5-2500MHz, the groword 4-pack at 5-2400MHz and the Voluty Tek pair at up to 2400MHz.
Do any of these protectors state a warranty?
Two do: the CNLonQcom states a 2-year manufacturer warranty and the Proxicast states a 1-year warranty. The IGOYE, Voluty Tek and groword listings state no warranty term.
Can I use a coax arrester on a DC solar line?
No. The coax arresters here are 75 Ohm F-type units for television, satellite and cable modem lines, while the DC solar lines need the DC 1000V units from CNLonQcom or IGOYE.
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