Among these whole-house surge protectors, my best overall pick is the Square D HEPD80 for its 80kA rating and familiar panel-oriented design. The Siemens Boltshield FSPD036 is a straightforward lower-capacity option, while the SPD2ULTRA stands out for its stated 108,000-amp capacity and indoor/outdoor use. The main tradeoff is between a higher listed surge-current rating and practical fit: panel compatibility, installation requirements, and the device’s protection type matter as much as the headline number. I’d also check the product documentation and have a qualified electrician confirm suitability for the service equipment. Read on for the full breakdown of how these nine options compare.
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Key Takeaways
- The Square D HEPD80 ranks first for pairing an 80kA rating with a recognizable panel-focused format; it is a more balanced pick than choosing solely by the highest stated amperage.
- The SPD2ULTRA and FHSPD108S share the highest stated capacity in this lineup at 108,000 amps, with indoor/outdoor use listed for both, so installation fit and documentation help separate them.
- The Siemens Boltshield FSPD036 and FHSPD36S are 36,000-amp options for buyers who want a lower-capacity device; compare enclosure and panel requirements before deciding between them.
- Type 1 devices serve a different installation role from products listed as Level 2, so the HSPD Square models and ABB THQLSURGE2 should be matched to the service setup with an electrician’s guidance.
- The Square D HOM2175SB is rated at 25kA, the lowest stated surge-current figure here, making its specific panel fit and intended use more relevant than treating it as a direct substitute for higher-rated picks.
| wholehouse surge protector | Voltage | Model | Brand |
|---|---|---|---|
| Square D by Schneider Electric | 120/240V | HOM2175SB | Schneider Electric |
| FHSPD36S Whole House Surge Pro | 120/240V compatible | FHSPD36S | Furniqro |
| HSPD Square Whole Home Surge P | 120/240VAC | HSPD-80 | Gloyatin |
| HSPD Square Whole Home Surge P | 240VAC | HSPD-25 | Gloyatin |
| Siemens Boltshield FSPD036 Lev | 120/240V | Boltshield FSPD036 | Siemens |
| SPD2ULTRA Whole-Home Surge Pro | 120/240V | — | — |
| FHSPD108S Whole House Surge Pr | 240V | — | — |
| Square D HEPD80 Universal Whol | 120/240V (product title) | — | — |
| ABB THQLSURGE2 Whole Home Surg | — | THQLSURGE2 | — |
More Details on Our Top Picks
Square D by Schneider Electric HOM2175SB Homeline SurgeBreaker, Surge Protection Device, 25kA, 120/240V, 1-Phase, 3-Wire
For a home with a compatible Homeline load center, the HOM2175SB’s plug-on design makes panel integration its clearest advantage. Its 25kA surge capacity is lower than the 36kA FHSPD36S and the 80kA Gloyatin HSPD-80, so buyers prioritizing the highest listed capacity have stronger options in this roundup. The built-in LED gives a quick visual indication of operating status, while its 120/240V, single-phase, three-wire rating matches common residential service. I’d treat it as a panel-level layer for household circuits and appliances, not a substitute for protection designed specifically for sensitive electronics. Its indoor-only, NEMA 1 environment also narrows placement choices. This is the most straightforward pick here when panel fit and a familiar plug-on format matter more than a higher capacity rating.
Pros:- Plug-on format is designed for Homeline load centers
- LED indicator provides a visible operating-status check
- Rated for 120/240V, single-phase, three-wire residential systems
- UL listed for indoor use
Cons:- 25kA capacity is below the listed 36kA and 80kA alternatives in this batch
- Indoor NEMA 1 rating limits installation location
- Panel-specific design is less flexible than broadly compatible models
Best for: Homeowners with a compatible Square D Homeline panel who want a plug-on surge protection device and a visible status indicator.
Not ideal for: Buyers with another panel brand, an outdoor installation need, or a priority for higher listed surge capacity.
- Brand:Schneider Electric
- Model:HOM2175SB
- Type:Surge Protection Device
- Surge capacity:25kA
- Voltage:120/240V
- System:1-phase, 3-wire
- SCCR:22.5 kA
- UL listed:Yes
- Dimensions:2.58 × 2 × 3.13 in
Our verdict“Choose the HOM2175SB if you have a compatible Homeline panel and value a plug-on installation over higher listed surge capacity.”
FHSPD36S Whole House Surge Protector for 36,000 Amps, Indoor/Outdoor Use, 120/240V
The FHSPD36S offers a practical middle ground for buyers who want a stated 36,000A capacity and indoor/outdoor placement without moving to the higher-capacity Gloyatin HSPD-80. Its compact wall-mount format can help when panel space is tight, and the LED status indicators make it easier to see whether the device is reporting protection. The product data lists compatibility with all load centers and circuit breakers on 60Hz systems, a broader fit than the Homeline-specific HOM2175SB. That broad claim still does not remove the need to check the panel and installation requirements. A qualified electrician may be needed, and the description flags startup problems when grounding or use is improper. I’d shortlist it for a typical residential system where placement flexibility matters more than the biggest capacity figure.
Pros:- 36,000A stated protection capacity
- Indoor/outdoor installation suitability
- Compact wall-mount design can save panel space
- LED indicators provide protection-status feedback
Cons:- Installation and grounding require careful attention and may call for an electrician
- Improper use or grounding can cause startup issues
- One-pole listing and broad compatibility claims warrant panel-specific checking
Best for: Homeowners seeking a compact, wall-mounted 120/240V protector for an indoor or outdoor location and a 36,000A stated capacity.
Not ideal for: Buyers who want a documented higher capacity, plug-on installation, or a device they can install without electrical expertise.
- Brand:Furniqro
- Model:FHSPD36S
- Amperage capacity:36,000 A
- Voltage:120/240V compatible
- Mounting type:Wall mount
- Circuit breaker type:Standard
- Number of poles:1
- Compatibility:All load centers and circuit breakers; 60Hz systems
- Installation setting:Indoor/outdoor
Our verdict“Pick the FHSPD36S for a compact, flexible 36,000A option when you want more capacity than the HOM2175SB and do not need the HSPD-80’s higher rating.”
HSPD Square Whole Home Surge Protective Device, Type 1 SPD, 120/240VAC
With a stated 80kA surge capacity, the Gloyatin HSPD-80 has the highest specified capacity among the five products in this batch. That makes it the more compelling choice than the 25kA HOM2175SB or 36,000A FHSPD36S for buyers who rank the listed capacity first. Its 120/240VAC rating and indoor/outdoor suitability fit a range of residential placements, and its compact design may be useful where room around the panel is limited. The tradeoff is sparse supporting detail: the listing gives no installation accessories or warranty information, and it calls for professional installation. Broad circuit-breaker compatibility is claimed, but buyers should confirm their own panel requirements with an electrician. I’d favor it for capacity-conscious shoppers who accept the need to verify the installation details before choosing.
Pros:- 80kA stated surge capacity leads the five products in this batch
- Rated for 120/240VAC residential service
- Suitable for indoor and outdoor installation
- Compact design can fit installations with limited space
Cons:- No installation accessories are listed as included
- Warranty information is not provided
- Professional installation and panel compatibility checks are needed
Best for: Homeowners comparing listed surge capacity who want an indoor/outdoor 120/240VAC device and can arrange professional installation.
Not ideal for: DIY installers or buyers who need clear warranty terms, included installation accessories, or extensive product documentation.
- Brand:Gloyatin
- Model:HSPD-80
- Type:Type 1 SPD
- Surge capacity:80kA
- Voltage:120/240VAC
- Application:Whole-house surge protection
- Installation setting:Indoor/outdoor
- Circuit-breaker compatibility:Various circuit breakers
Our verdict“Choose the HSPD-80 if its 80kA stated capacity is your priority and you are prepared to verify fit and installation with an electrician.”
HSPD Square Whole Home Surge Protective Device, Type 1 SPD, 120/240VAC
The HSPD-25 stands out for its 25/50/80kA capacity choices, which let buyers compare configurations within the same product line instead of choosing only one listed capacity. The supplied data does not explain how to select among those ratings, so I’d confirm the exact model configuration before ordering. Compared with the fixed 80kA HSPD-80, this listing may suit someone who wants a lower-capacity option, though its own title and model details leave that distinction unclear. It is a two-pole, wall-mount device rated at 240VAC, with stated indoor/outdoor suitability and compatibility with various breaker brands. Professional installation is recommended, and long-term durability details are limited. This pick makes most sense when its configuration can be verified and the capacity range is useful to the buyer.
Pros:- Multiple stated capacity options: 25, 50, or 80kA
- Two-pole configuration is specified
- Wall-mount design and indoor/outdoor suitability
- Claimed compatibility with various breaker brands
Cons:- Listing does not explain how the 25/50/80kA configurations differ
- Long-term durability information is limited
- Professional installation is recommended
Best for: Homeowners working with an electrician who can confirm the exact capacity configuration and need a two-pole, wall-mount 240VAC SPD.
Not ideal for: Buyers seeking a clearly specified single capacity, detailed durability information, or a simple plug-on panel device.
- Brand:Gloyatin
- Model:HSPD-25
- Type:Type 1 SPD
- Surge capacity options:25/50/80kA
- Voltage:240VAC
- Number of poles:2
- Mounting type:Wall mount
- Circuit breaker type:Standard
- Installation setting:Indoor/outdoor
Our verdict“Consider the HSPD-25 when an electrician can confirm which capacity configuration you will receive and install.”
Siemens Boltshield FSPD036 Level 2 Whole House Surge Protection Device 36,000 Amps, 120/240V
The Siemens Boltshield FSPD036 is a sensible shortlist option for homeowners who want a named 36,000A Level 2 device for 120/240V service. Its listed capacity matches the FHSPD36S, while the FHSPD36S supplies more detail about mounting, broad compatibility, and indoor/outdoor use. Siemens, by contrast, is described as suitable for installation outdoors or inside load centers and includes LED protection indicators for a visual status check. The available specifications are thin, though: they do not state breaker compatibility, enclosure details, or dimensions. That makes panel verification especially important before purchase. I’d choose it when Siemens branding and the stated Level 2 format fit the buyer’s plan, but the FHSPD36S is easier to compare on installation details from the data provided.
Pros:- 36,000A stated surge current for whole-house protection
- Rated for 120/240V systems
- LED indicators show protection status
- Described for outdoor or load-center installation
Cons:- Compatibility with existing systems is not specified in the supplied data
- Available technical specifications are limited
- Installation may require professional electrical work
Best for: Homeowners who prefer a Siemens-branded Level 2 device and can confirm compatibility with their load center before installation.
Not ideal for: Buyers who need detailed compatibility, enclosure, or dimensional specifications to make a confident panel fit decision.
- Brand:Siemens
- Model:Boltshield FSPD036
- Protection type:Level 2
- Surge current:36,000 A
- Voltage:120/240V
- Status indication:LED indicators
- Installation setting:Outdoor or inside load centers
Our verdict“Choose the Boltshield FSPD036 if you prefer Siemens and can verify panel compatibility despite its limited published details.”
SPD2ULTRA Whole-Home Surge Protector, 108,000 Amp, Indoor/Outdoor, 120/240V
I’d shortlist the SPD2ULTRA for a home where the panel location or enclosure makes installation flexibility a priority. Its 108,000-amp rating is higher than the 80kA Square D HEPD80 listing, while indoor/outdoor support gives an installer more placement options. The compact 2.2-by-3.62-by-5.11-inch body may also help when panel space is tight. Those advantages come with practical constraints: it calls for a 2-pole 50-amp breaker, and the compatibility notes say some systems may need replacement parts. I’d choose it over the HEPD80 when outdoor mounting and higher stated capacity matter more than the Square D’s simpler indoor-oriented fit, but I’d verify panel compatibility and breaker requirements before buying.
Pros:- 108,000-amp stated surge capacity
- Supports indoor and outdoor installation
- Compact dimensions can ease placement near a crowded panel
- LED indicators provide a visible status check
Cons:- Requires a 2-pole 50-amp circuit breaker
- Some systems may need replacement parts for compatibility
Best for: Homeowners whose installer needs indoor or outdoor placement options and whose panel supports the specified 2-pole 50-amp breaker
Not ideal for: Owners seeking a straightforward fit for an unverified panel or unwilling to check whether their system needs replacement parts
- Voltage:120/240V
- Surge capacity:108,000 amps
- Installation:Indoor or outdoor
- Recommended breaker:2-pole, 50 amp
- Dimensions:2.2 × 3.62 × 5.11 inches
- Status indicator:LED
Our verdict“Choose the SPD2ULTRA if flexible mounting and its higher stated capacity suit your panel, after confirming breaker and compatibility requirements.”
FHSPD108S Whole House Surge Protector for 108,000 Amps, Indoor/Outdoor, 120/240V
The FHSPD108S pairs a stated 108,000-amp capacity with indoor/outdoor installation and compatibility with various load centers, making it a candidate for buyers who need an installer to match a protector to a particular panel. It offers the same headline capacity and placement flexibility as the SPD2ULTRA, so those specs alone don’t make it the clearer pick. The deciding point is the stated load-center compatibility; the tradeoff is that the product data also describes a single outlet, which is hard to reconcile with a whole-home panel device. I’d ask the electrician to confirm the exact model, connection method, and panel fit before purchase. Professional installation is advised, and the listing gives less concrete installation detail than the Square D HEPD80’s residential load-center description.
Pros:- 108,000-amp stated maximum current
- Described as suitable for indoor and outdoor installation
- Claims compatibility with various load centers
- Compact design
Cons:- Listing’s single-outlet detail creates uncertainty about whole-home connection
- Professional installation is advised
- Connection and breaker specifics are not provided in the supplied data
Best for: Homeowners working with an electrician to confirm fit across a less common or specific load center
Not ideal for: Buyers who need clear panel-mount and connection details from the listing before choosing a whole-home device
- Voltage:240V
- Maximum current:108,000 A
- Installation:Indoor or outdoor
- Outlet count:1
- Weight:0.46 kg
- Plug type:Type B, 3-pin
- Compatibility:Various load centers (as stated)
Our verdict“Consider the FHSPD108S only after an electrician confirms its load-center fit and how the single-outlet listing relates to whole-home installation.”
Square D HEPD80 Universal Whole House Surge Protection Device, 1-Phase, 3-Wire for 120/240V, 80kA
The Square D HEPD80 is the more grounded choice for buyers seeking an indoor residential load-center protector with a clear 120/240V, single-phase, 3-wire specification. Its stated 80kA capacity is below the 108,000-amp figures listed for the SPD2ULTRA and FHSPD108S, but it may suit shoppers who value a defined residential panel application over the biggest capacity number. An LED status indicator gives a quick visual check, while the compact enclosure helps with panel-adjacent placement. The main limitation is indoor-only use, so it cannot match those two alternatives when outdoor mounting is needed. The supplied data also contains inconsistent outlet and voltage details; I’d confirm the exact HEPD80 configuration and panel requirements with an electrician before ordering.
Pros:- Specified for 120/240V, single-phase, 3-wire service
- Described for installation in residential load centers
- LED indicator makes status visible
- Compact enclosure
Cons:- Indoor use only
- 80kA stated capacity is lower than the 108,000-amp SPD2ULTRA and FHSPD108S listings
- Supplied data has conflicting outlet and voltage details that need confirmation
Best for: Homeowners with an indoor residential load center seeking a clearly specified 120/240V single-phase device
Not ideal for: Buyers who need outdoor installation or prioritize a higher stated surge-capacity figure
- System:1-phase, 3-wire
- Voltage:120/240V (product title)
- Maximum current:80kA
- Use:Indoor
- Enclosure material:Polycarbonate, rubber
- Weight:14.88 ounces
- Status indicator:LED
Our verdict“Pick the HEPD80 for a confirmed indoor residential panel fit when its 80kA rating meets your needs and outdoor installation is unnecessary.”
ABB THQLSURGE2 Whole Home Surge Protection Device Type 1 SPD
I’d put the ABB THQLSURGE2 on the shortlist when the home already has a compatible ABB or GE load center. Its plug-on, two-space design can simplify the physical connection compared with devices that need a separate mounting approach, and the LED shows operational status. The stated protection is 25kA per phase, a different rating basis from the 80kA Square D HEPD80 and 108,000-amp SPD2ULTRA, so buyers should compare the published specifications carefully instead of treating the numbers as directly interchangeable. This is a Type 1 device, and the listing says it is limited to 20-amp circuit ratings; that narrows its fit. I’d favor the Square D for its listed 80kA capacity, while the ABB makes more sense when compatible plug-on installation is the priority.
Pros:- Plug-on installation for compatible ABB and GE load centers
- Two-space design
- LED status indicator
- UL Listed and NEC Compliant, as stated
Cons:- Limited to 20-amp circuit ratings according to the supplied data
- Compatibility is limited to ABB and GE load centers
- Type 1 application may not match every installation plan
Best for: Homeowners with an ABB or GE load center who want a compatible plug-on Type 1 device
Not ideal for: Owners with other panel brands, higher circuit-rating needs, or a preference for a device specified with a higher capacity figure
- Model:THQLSURGE2
- Device type:Type 1 SPD
- Surge handling:25kA per phase
- Mounting:Plug-in
- Poles:2
- Panel compatibility:ABB and GE load centers
- Space:2-space
- Status indicator:LED
Our verdict“Choose the THQLSURGE2 when your load center is compatible and its 25kA-per-phase Type 1 specification fits your electrician’s plan.”
How We Picked
I compared the nine products on the details that affect a whole-home installation: stated surge-current rating, voltage and phase compatibility, protection type or level, indoor/outdoor suitability, and how clearly the product is tied to a panel or service setup. I gave more weight to usable fit and clearly stated specifications than to a large amperage figure on its own, since those figures do not confirm compatibility with a particular home.
The Square D HEPD80 leads for its 80kA rating and panel-oriented positioning. The two 108,000-amp devices follow as high-capacity choices, while 36,000-amp models offer a lower stated capacity. Type 1 and Level 2 listings receive distinct roles because installation context matters; the duplicated HSPD Square listings have matching names and specifications in the supplied information, so I treat them as equivalent rather than inventing a difference. Product documentation and electrician confirmation remain key where specifications or fit are unclear.
| wholehouse surge protector | Brand | Model |
|---|---|---|
| Square D by Schneider Electric | Schneider Electric | HOM2175SB |
| FHSPD36S Whole House Surge Pro | Furniqro | FHSPD36S |
| HSPD Square Whole Home Surge P | Gloyatin | HSPD-80 |
| HSPD Square Whole Home Surge P | Gloyatin | HSPD-25 |
| Siemens Boltshield FSPD036 Lev | Siemens | Boltshield FSPD036 |
| SPD2ULTRA Whole-Home Surge Pro | — | — |
| FHSPD108S Whole House Surge Pr | — | — |
| Square D HEPD80 Universal Whol | — | — |
| ABB THQLSURGE2 Whole Home Surg | — | THQLSURGE2 |
Factors to Consider When Choosing Wholehouse Surge Protectors
Before choosing a whole-house surge protector, match the device to your service equipment and decide what kind of installation it is meant to support. The product list gives useful ratings, but a few broader checks can prevent a mismatch between the label and the protection your home needs.
Match the device to your panel and service
Start with the panel’s make, model, voltage, and available installation space rather than a surge rating. A device that fits a familiar brand family may simplify selection, but the product name alone does not prove compatibility with every panel from that manufacturer. Check the installation instructions for breaker requirements, connection method, and whether the unit mounts inside or outside the panel. Ask an electrician to verify the panel’s configuration and the proposed connection point. A mismatch can make a nominally powerful device unsuitable for the actual service equipment. This fit check matters before comparing the 25kA, 36,000-amp, 80kA, or 108,000-amp figures.
Read surge ratings in context
Surge-current ratings help compare listed capacity, but they do not provide a complete picture of how a device will perform in a specific installation. Confirm that the documentation defines the rating and specifies the protection modes and voltage system covered. Avoid treating the largest number as an automatic win: wiring, grounding, installation location, and panel compatibility all affect the finished setup. If two products use different rating conventions or provide different levels of detail, compare their official specifications before drawing a direct conclusion. The 108,000-amp devices lead on the stated figure in this roundup, while the 80kA HEPD80 offers a different balance of capacity and panel-focused positioning. A qualified installer can explain which figures are relevant to your service.
Understand Type 1, Level 2, and installation location
Protection type and level describe installation roles, so compare them with your electrician’s plan for the service equipment. The lineup includes Type 1 listings, a Level 2 listing, and products whose supplied names do not state a type. Those labels are not a substitute for checking where the manufacturer allows installation and how the device connects. Indoor/outdoor wording can expand placement options, but it does not eliminate enclosure, clearance, or environmental requirements. Confirm whether a device is intended for the location you have in mind and whether local electrical rules permit that placement. This is especially useful when weighing the high-capacity indoor/outdoor models against panel-associated products.
Check the protection details beyond the headline number
Ask what the device protects, how it signals its status, and what happens when its protective components reach the end of their service life. Indicator lights or alarms can make loss of protection easier to notice, while replacement guidance affects long-term upkeep. Review the published voltage protection ratings and modes rather than relying on amperage alone. Also check the manufacturer’s warranty terms and any limits tied to installation or connected equipment. These details may separate two devices with similar capacity more meaningfully than a small difference in their headline ratings. If the listing leaves them unclear, consult the product manual before buying.
Decide whether you need layered protection
A service-panel surge protector can reduce some surges entering through the electrical service, but it does not mean every sensitive device has identical protection in every scenario. Think about electronics, network equipment, and appliances that may benefit from additional point-of-use protection. Layering should follow the equipment makers’ instructions and an electrician’s advice, especially for devices with separate communication or antenna connections. Avoid assuming a whole-house unit replaces careful grounding or protective measures on other incoming lines. This broader approach may matter more for a home office or entertainment setup than moving from one listed amp rating to another. Choose the panel device as part of the home’s protection plan, not as a guarantee against every electrical event.
Factor installation and maintenance into the choice
These devices connect to household electrical equipment, so installation is generally a job for a qualified electrician. Ask for the full installed scope, including any required breaker, enclosure, wiring, and panel work, before selecting a unit. Product labels such as indoor/outdoor use do not establish that installation will be simple or permitted in a particular location. Find out how to check the device’s status after installation and what replacement indicators mean. If your panel is older, crowded, or due for replacement, coordinating the surge device with broader electrical work may be more practical. A modestly rated device that is correctly selected and maintained can be a better fit than a higher-capacity model chosen without those checks.
Frequently Asked Questions
Should I choose a 108,000-amp unit over an 80kA unit?
Not from the rating alone. The SPD2ULTRA and FHSPD108S list 108,000 amps, while the Square D HEPD80 lists 80kA, but the figures may use different conventions and do not confirm the same protection details. Compare the manufacturers’ documentation for voltage protection ratings, protection modes, installation requirements, and status indicators. Then have an electrician confirm that the device fits your panel and service. If those checks favor the HEPD80, its lower listed figure need not make it the poorer choice for your home.
Can I install a Type 1 surge protector in any electrical panel?
No. Type 1 identifies a protection category, not universal compatibility with every panel or service arrangement. Confirm the manufacturer’s permitted installation locations, wiring diagram, voltage configuration, and any required disconnect or breaker. Local electrical requirements can also affect what is allowed. An electrician can check whether a Type 1 device such as the listed HSPD Square or ABB option suits your service equipment.
Are the two HSPD Square listings different products?
The supplied product names and specifications are identical: both are described as a Type 1 SPD for 120/240VAC. The information provided does not establish a difference in ratings, construction, or included parts. I would compare the exact model or catalog number, manufacturer documentation, and package contents before treating them as distinct options. If those details match, there is no evidence in this roundup to prefer one listing over the other.
Is the Siemens FSPD036 a suitable lower-capacity alternative to the 108,000-amp models?
It may suit a buyer whose installation calls for the Siemens Level 2 device and its listed 36,000-amp capacity, but capacity alone cannot determine suitability. Compare its documentation and connection requirements with those of the SPD2ULTRA and FHSPD108S, which list 108,000 amps and indoor/outdoor use. The models also differ in stated protection level and product details, so they are not direct equivalents. Ask an electrician which type and rating fit your service and risk priorities before substituting one for another.
Do I still need plug-in surge protection after adding a whole-house unit?
Possibly. A panel device protects at the service level, while plug-in protection can add another layer near sensitive electronics and equipment connected through other lines. The right setup depends on your appliances, wiring, grounding, and any manufacturer instructions. For network, cable, or antenna-connected equipment, ask whether those paths need separate protection. A whole-house unit should not be treated as a promise that every connected device is immune to damage.
Conclusion
For most buyers comparing this lineup, I’d start with the Square D HEPD80 as the best overall, then confirm panel compatibility with an electrician. The best high-capacity choices are the SPD2ULTRA and FHSPD108S, both listed at 108,000 amps with indoor/outdoor use; choose between them by checking manuals, installation fit, and status features. The Siemens Boltshield FSPD036 is the more focused pick for someone seeking a Level 2 device with a 36,000-amp rating, while the Square D HOM2175SB may suit a buyer whose panel and intended application specifically match its 25kA design. For beginners, I recommend taking the panel details and shortlisted model to a qualified electrician before ordering. For a Type 1 installation, compare the HSPD Square and ABB listings against the service setup rather than choosing by name alone.
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