square d interlock kit
Skip itSoft demand (-53.1% this quarter) — this niche doesn't clear our bar today.
Avg price
Great$21.38avg listing price — sweet spot $15–$100
Price range
Great$6.21–$68.73cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great361.08avg incumbent reviews — the moat a new listing must climb
Conversion
Great7.8%search→purchase rate — share of searches ending in a sale
Returns
Good2.5%return rate — above 5% kills the launch gate
Brand share
Okay82%top-5 brand share — brands hold most of the demand
Market size
Bad$95K$95K/yr · 57K searches
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Competition
Bad74%top-5 click share — a locked-up shelf
Growth
Bad-53.1%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, square d interlock kit is a $95K/yr Amazon United States market (57K searches/yr). The top 5 brands hold 82% of demand. Demand peaks in Jan–Feb. Verdict: Skip it — 40/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
square d interlock kit market data
- Units sold / yr
- 5K–6K
- avg 500–750/product
- Revenue / yr
- $107K–$128K
- units × avg price
- Conversion rate
- 7.8%
- Avg BSR
- #650
- Page quality
- 0%
- Prime
- 92%
- Sponsored
- 92%
- Out of stock
- 0.0%
- Avg brand age
- 40 months
- Avg seller age
- 118 days
Competition & brand share
The top 5 products capture 74% of clicks — a locked-up shelf that new listings rarely crack.Brands
10 rising
Sellers
14
Top-5 brand share
82%
Top 20: 100%
Top-5 click share
74%
Top 20: 100%
Open market
13%
- Natupal41%
- QYZZRS24%
- GenSafety6%
- GenCap6%
- XMK5%
- SPZOCE5%
- Open — no brand owns it (4 brands, 13%)
Demand & seasonality
Weekly Amazon search volume, last 68 weeks — -53.1% search growth over the last 90 days.Peak months: Jan, Feb · busiest ÷ quietest = 2.8×
Top square d interlock kit search terms
- square d interlock kit16K/yr
- generator interlock kit square d10K/yr
- square d interlock kit 200 amp8K/yr
- homeline generator interlock kit7K/yr
- square d generator interlock kit6K/yr
- homeline interlock kit4K/yr
- qo interlock kit3K/yr
- square d homeline interlock kit3K/yr
Top square d interlock kit products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 13 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Natupal Generator Interlock Kit Compatible with Square D QO or Homeline 150 or 200 amp panels. 1 3/8 inches Spacing between main and generator breaker Professional and Interlock Kit (SD200A)
Natupal$19.114.7★1,751 rev
Generator Interlock Kit Compatible with Square D QO or Homeline 150 or 200 amp Panels.1 3/8 inches Spacing Between Main and Generator Breaker.Professional and Interlock Kit(1set)
QYZZRS$11.834.7★485 rev
GenSafety Generator Interlock Kit for Square D 150 Amp and 200 Amp Panels with 3 1/4 Spacing
GenSafety$68.735.0★32 rev
Generator Interlock Kit for Square D QO or Homeline 100 or 125 Amp Panels
XMK$19.814.5★86 rev
Generator Interlock Kit Compatible with Square D QO & Homeline 150/200 Amp Panels 1 3/8 Spacing Between Main & Generator Breakers Professional and Interlock Kit (SD200A)
SPZOCE$26.294.6★25 rev
Newest
by launch date
Generator Interlock Kit Compatible with Square D QO or Homeline 150 or 200 amp Panels 1 3/8 inches Spacing Between Main and Generator BreakerProfessional and Interlock Kit(1set)
WHXMHRQ$6.2129 rev
Generator Interlock Kit Compatible with Square D QO & Homeline 150/200 Amp Panels 1 3/8 Spacing Between Main & Generator Breakers Professional and Interlock Kit (SD200A)
SPZOCE$26.2925 rev
Generator Interlock Kit for Square D QO or Homeline 150 or 200 amp Panel - Generator Lockout Kit Interlock Switch - 1 3/8 Spacing Between Main and Generator Breaker
MOWABI$17.0173 rev
Generator Interlock Kit for Square D QO or Homeline 100 or 125 Amp Panels
XMK$19.8186 rev
GenSafety Generator Interlock Kit for Square D 150 Amp and 200 Amp Panels with 3 1/4 Spacing
GenSafety$68.7332 rev
Trending
90-day click momentumGenerator Interlock Kit Compatible with Square D QO & Homeline 150/200 Amp Panels 1 3/8 Spacing Between Main & Generator Breakers Professional and Interlock Kit (SD200A)
SPZOCE$26.294.6★
Natupal Generator Interlock Kit Compatible with Square D QO HOM 150 or 200 amp panels. 1 3/8 Inch Spacing between main and branch breaker update versioner Professional and Interlock Kit new version
Natupal$20.384.8★
Generator Interlock Kit Compatible with Square D Electric QOCGK2C QO Cover Generator and QOM2 Frame Size Main Breaker
GenCap$18.664.6★
Generator Interlock Kit for Square D QO or Homeline 100 or 125 Amp Panels
XMK$19.814.5★
Generator Interlock Kit Compatible with Square D QO or Homeline 150 or 200 amp Panels. 1 3/8 in Spacing Between The Main and Generator Circuit Breakers SD200A Professional Generator Interlock Kit
Flngr$17.984.6★
What buyers say about square d interlock kit
What buyers praise and complain about, mined from review topics.What buyers love
“Well made and fits exactly as shown”
“Does the job”
“fits the generator breaker”
“Great value”
“does it's the job well”
“Clear instructions for DIY”
“Easy to install”
“Great USA made product”
“Easy”
“Sturdy material”
What buyers complain about
“DOES NOT FIT 100 AMP QO Panels”
“The installation was square and level, so it appears the plate itself may have been milled or cut slightly off”
“Instructions are confusing still cant figure it out”
“DOES NOT fit QO Panel”
“the function is sloppy”
“The base plate needs to be thicker”
“Unfortunately, due to the way my main feed box was constructed, I was unable to use it”
“Doesn't come with the breaker holder for the QO panel”
“Wrong parts”
Top return reasons
Common questions
- Is square d interlock kit profitable to sell on Amazon United States?
- The niche generates $95K/yr across 13 tracked products. 90-day search growth is -53.1%. Flapen's verdict: Skip it (40/100).
- How competitive is the square d interlock kit niche?
- 10 brands and 14 sellers compete. The top 5 products take 74% of clicks and top 5 brands hold 82% of demand.
- What do buyers complain about in square d interlock kit?
- Top complaints mined from reviews: Size-Overall, Assembly/Installation, Instructions/User Manual/Troubleshooting. The return rate is 2.5%.
- When does demand for square d interlock kit peak?
- Demand peaks in Jan–Feb; the busiest month runs 2.8× the quietest.
- What does it cost to enter the square d interlock kit niche?
- Listings span $6.21–$68.73; the average listing price is $21.38 (sweet spot $15–$100). The average incumbent carries 361 reviews — the moat a new listing must climb.