Top 10 Best melin in 2026

Last Updated - 6/12/2026

🏆Best Choice

Natupal

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)

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•【Compatible Models】Generator Interlock Kit Compatible with Square D QO or Homeline 150 or 200 amp panels.
•【Interval Space Required】1 3/8 Inch Spacing between main and generator breaker.
•【Safety Generator Interlock kit】This kit avoids the inconveniences that an unexpected power outage can cause. It is used to direct generator power to any circuit within your home safely. It is truly a great way to safely connect up a generator while assuring that you have access to all of your home electrical appliances.
•【Package Contents】Our Generator Interlock kit include 1 × Interlock plate, 3 × Shoulder Screws, 3 × Hex Nuts, 1 × Generator Start-Up Procedure Label, 5 × Remind Label, 2 × Zip Ties, 1 × Instruction Bulletin, 1 × Drill Bit.
•【Easy to Install】The generator interlock kit offers a 3/16 drill bit, sturdy steel that goes through breaker panel easily. Easy to install, no need extra control box or wiring. Simply contact us back if our product ever fails you and we'll mail you a new original replacement.

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$17.99

$26.99

-33%

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QYZZRS

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)

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Generator interlock kits are available for Square D QO and Homeline 150 and 200 amp panels.
•Interval Space Required：1 3/8 Inch Spacing between main and generator breaker.
•Installation Note: Before installing the interlocking kit, Attach the screws to the interlock kit first. Let's simulate the use of the test, so that we can better align the installation position, to avoid errors in the installation position, resulting in failure to use.
•Safe use：the manual transfer switch device allow portable generator safe back feeding power supply to distribution panel and home line. Prevent utility and generator supplies from being ON at the same time. Aren't putting electrician in dangerous and damage electric devices during power outages.
•Package：Our Generator Interlock kit include 1 × Interlock plate, 3 × Screws kit, 1 × Drill Bit, 1 × Instruction Bulletin, 2 × Generator Start-Up Procedure Label, 8 × Remind Label, 2 × Zip Ties.

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$9.99

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Flngr

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

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•【SD-200A】Generator interlock kits are available for Square D QO and Homeline 150 and 200 amp panels
•【Interval Space Required】1 3/8 in spacing between the main and generator circuit breakers
•【Safety Generator Interlock kit】This kit prevents Municipal electricity and generator supplies from being on at the same time, avoid the inconvenience that may be caused by unexpected power outages. It is used to safely direct generator power to any circuit in your home, while ensuring that you have safe access to all your household appliances
•【Package】Our Generator Interlock kit include 1 × Interlock plate, 3 × Screws kit, 1 × Drill Bit, 1 × Instruction Bulletin, 1 × Generator Start-Up Procedure Label, 5 × Remind Label, 1 × Zip Ties
•【Buy No Worries】All of our interlocking kits are backed by our commitment to quality. Should our product ever fail to meet your expectations, just reach out via email, and we'll promptly send you a new original replacement at no additional cost

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$17.98

$18.97

-5%

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GenCap

Generator Interlock Kit Compatible with Square D Electric HOMCGK2C Homeline Cover Generator and QOM2 Frame Size Main Breaker Interlock Kit

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•【Compatible Models】For use on indoor Homeline 150A - 225A Main Breaker. Quickly convert existing HomeLine Load Centers into back-up power solutions. No need for a separate generator panel or special cover.
•【Safety Generator Interlock kit】This kit interlocks the QOM1 or QOM2 main breaker with a 2-pole breaker back-fed from a generator. Avoid the inconveniences that an unexpected power outage can cause with Indoor Generator Interlock Kit. It is used to direct generator power to any circuit within your home. It is truly a great way to safely connect up a generator, while assuring that you have access to all of your home electrical appliances.
•【Package Contents】Our Generator Interlock kit Includes 1 interlock bracket, 1 retaining bracket, 1 hole drilling template, 3 hex nuts, 3 10-32 shoulder screws,1 interior mounting screw, 1 Instruction Bulletin, 1 Wiring diagram and 2 Interlock translation labels.
•【High Quality and Reusable】This Interlock Kits are engineered from impact and chemical resistant stainless steel,which are very durable and reusable.Very easy to install or remove from within few seconds.Allow you to install this Interlock Kits more convenient and easier.Ideal for domestic and professional use with high quality.This interlock kit meets UL and ANSI safety requirements.
•【Easy to Install】The generator interlock kit offers drill bit, sturdy steel that goes through breaker panel easily. Easy to install, no need extra control box or wiring.

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$17.99

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DSGSANO

DSGSANO Generator Interlock Kit for Square D QO & Homeline 150/200 Amp Panels – 1 3/8" Spacing Between Main & Generator Breaker, Professional Grad

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Perfect Compatibility:designed to fit Square D QO and Homeline 150 or 200 amp panels with a 1 3/8" spacing between the main and generator breakers. Ensures a precise and secure fit.
•Enhanced Safety Design:prevents simultaneous connection of utility and generator power. Helps avoid back-feeding and protects utility workers and home electrical systems.
•Easy DIY Installation:includes all installation hardware: drill bit, screws, nuts, labels, and zip ties. No additional wiring or control boxes required. Install in under 30 minutes.
•Durable Construction:made from heavy-duty 3/16" thick aluminum for long-lasting durability and corrosion resistance. Suitable for indoor and outdoor use.
•Cost-Effective Solution:smart alternative to expensive transfer switches. Provides reliable backup power integration without breaking the bank.

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$7.59

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Homeline Generator Interlock Kit for 150A-225A Load Centers

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•Safely Connect Your Generator:Interlock QOM1/QOM2 Main Breaker with 2-Pole Breaker
•Compatible with Homeline 150A-225A,Square D Electric HOMCGK2C Homeline Cover Generator and QOM2 Frame Size Main Breaker Interlock Kit. Load Centers:No Need for Separate Generator Panel
•Complete Kit: Includes Interlock Bracket,Retaining Bracket,Hole Drilling Template, and More
•Durable and Reusable:Made from Impact and Chemical Resistant Stainless Steel
•Risk-Free Purchase:Backed by Lifetime Warranty for Your Peace of Mind

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$12.99

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XMK

Generator Interlock Kit for Square D QO or Homeline 100 or 125 Amp Panels, 3/4 to 7/8 Inches Spacing, Professional and Interlock Kit for Square D Homeline and QO 100 A Indoo or Outdoor

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Compatible Models: Generator interlock kit compatible with Square D QO or Home line interlock kit for 100 and 125 amp panels
•Main and Branch Breaker Space: Single handle horizontal throw left to right 3/4 - 7/8 inches spacing between main breaker and branch breakers
•Safe and Reliable: Generator interlock kit for Square D QO or Homeline provide a safe and cost-effective way to backfeeding of your home electrical appliances by a portable generator; Ideal solution for power outages or emergency backup power to keep your home geared up and running safely
•Easy Installation: Easy to connect the generator to Square D QO or Home line panel and ensure the main breaker can never be on while the generator breaker is on; Moves smoothly when in operation and provide safety for your family
•Complete Interlock Kits: 1 x Interlocking Plate, 3 x Shoulder Screws, 3 x Hex Nuts, 1 x Matching Drill Bit, 1 x Generator Start-Up Procedure Labels, 5 x Remind Labels, 2 x Zip Ties, 1 x Instruction

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$19.99

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MuuTuoL

MuuTuoL 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, SD200A Professional and Safe Interlock Kit

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Compatible Models: Generator interlock kit compatible with Square D QO or Homeline 150 or 200 amp panels
•Interval Space Required: 1 3/8 inch spacing between main and generator breaker
•Safe and Reliable: This interlock kit 200 amp prevents unplanned power outages from causing inconvenience,The interlock kit is used to safely connect the generator power to any circuit in your home, preventing the utility power and generator power from coming on at the same time, and ensuring that you can use all of your household appliances while safely connecting the generator
•Easy to Install: Generator interlock kit breaker panel transfer switch is provided with a 3/16 drill bit to easily pass through the circuit breaker panel without the need for an additional control box or wiring, you can test the location in advance before marking and drilling the holes before installation
•Package Contents: Our breaker interlock kit include 1 x interlock plate, 3 x shoulder screws, 3 x hex nuts, 1 x generator startup program label, 5 x reminder labels, 2 x tie wraps, 1 x instructional bulletin, 1 x drill bit

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$7.99

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LATING

LATING Generator Interlock for Square D QO or Homeline 100 or 125 Amp Panels with 3/4 to 7/8 Inches Spacing, Brushed Nickel

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•⭐️Compatibility: This interlock kit for Square D QO or Homeline 100 or 125 amp panels, the spacing between main and the closest generator breaker is 3/4 to 7/8''.
•⭐️Durability: The generator lockout kit is made of corrosion-resistant and high hardness aluminum alloy.
•⭐️Anodization: Our interlock switch has been treated with surface anodized, electrical insulation, heat insulation, safer.
•⭐️Package Content: Interlock x1; safety labels x6; 11.8''generator breaker retainer straps x2; 3/16 drill bit x1; Installation guide x1
•⭐️Note: If the breaker interlock doesn't work properly, DO NOT USE it and contact us immediately for support and instructions!

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$15.88

$17.88

-11%

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Areisal

Areisal Generator Interlock Kit, HOMCGK2C Homeline Cover, QOM2 Frame Size Main Breaker Interlock, 150A - 225A Main Breaker Load Centers, Indoor Kit

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•【Safety Generator Interlock kit】This kit interlocks the QOM1 or QOM2 main breaker with a 2-pole breaker back-fed from a generator.Avoid the inconveniences that an unexpected power outage can cause with Indoor Generator Interlock Kit.It is used to direct generator power to any circuit within your home. It is truly a great way to safely connect up a generator, while assuring that you have access to all of your home electrical appliances.
•【Compatible Models】For use on indoor Homeline 150A - 225A Main Breaker Load Centers. Quickly convert existing HomeLine Load Centers into back-up power solutions. No need for a separate generator panel or special cover.
•【Package Contents】Our Generator Interlock kit Includes 1 interlock bracket, 1 retaining bracket, 1 hole drilling template, 3 hex nuts, 3 10-32 shoulder screws,1 interior mounting screw, 1 Instruction Bulletin, 1 Wiring diagram and 2 Interlock translation labels.Made in the USA.
•【High Quality and Reusable】This Interlock Kits are engineered from impact and chemical resistant stainless steel,which are very durable and reusable.Very easy to install or remove from within few seconds.Allow you to install this Interlock Kits more convenient and easier.Ideal for domestic and professional use with high quality.This interlock kit meets UL and ANSI safety requirements.
•【Easy to Install】The generator interlock kit offers drill bit, sturdy steel that goes through breaker panel easily. Easy to install, no need extra control box or wiring.

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$16.99

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