Explore top interlock kits that safely backfeed a portable generator into 150–200 amp breaker panels. This guide highlights models compatible with Eaton BR, Square D QO, and Homeline systems, focusing on reliable spacing, easy installation, and durable construction. Each option helps maintain essential home circuits during outages while preventing backfeed risks. Review the featured products, then use our Buying Guide to compare fit, compatibility, and installation considerations.
| Product | Brand | Panel Compatibility | Spacing (inches) |
|---|---|---|---|
| Generator Interlock Kit for Eaton BR 150/200 | EXCELFU | Eaton BR Series | 1 1/4 – 1 7/16 |
| Natupal Interlock Kit for Square D QO/Homeline 150/200 | Natupal | Square D QO/Homeline | 1 3/8 |
| MOWABI Interlock Kit for Square D QO/Homeline 150–200 | MOWABI | Square D QO/Homeline | 1 3/8 |
| QYZZRS Interlock Kit for Square D QO/Homeline 150–200 | QYZZRS | Square D QO/Homeline | 1 3/8 |
| XMK Interlock Kit for Square D QO/Homeline 100/125 | XMK | Square D QO/Homeline | 3/4 – 7/8 |
EXCELFU Interlock Kit For Eaton BR 150/200 Amp Panels
Safe and reliable, this generator interlock kit provides a cost-effective solution to backfeeding during power outages. It is designed for Eaton/Cutler Hammer BR series panels and supports a single-handle horizontal main breaker movement with left-on and right-off action. Spacing between main and branch breakers ranges from 1 1/4 to 1 7/16 inches, ensuring proper fit and safe operation with 150 and 200 amp models. Installation notes emphasize correct alignment to maintain functionality and safety.
Natupal Interlock Kit For Square D QO / Homeline 150/200 Amp Panels
Compatible with Square D QO and Homeline 150 or 200 amp panels, this interlock kit requires a 1 3/8 inch spacing between the main and generator breaker. It aims to safely route generator power to circuits within the home, reducing backfeed risks during outages. The kit is marketed as a practical, professional-grade option for homeowners seeking reliable generator integration with standard Square D panels.
MOWABI Interlock Kit For Square D QO / Homeline 150–200 Amp
Premium materials support durable performance, with a 1 3/8 inch spacing between the main and generator breakers for Square D QO or Homeline 150–200 amp panels. The kit emphasizes easy installation, including a drill bit and clear instructions for a straightforward, secure fit that minimizes bending or warping during use. The design focuses on reliable long-term operation in residential settings.
QYZZRS Interlock Kit For Square D QO / Homeline 150–200 Amp
Designed for Square D QO and Homeline panels, this interlock kit specifies a 1 3/8 inch spacing between main and generator breakers. It includes a comprehensive package with mounting hardware and setup guidance to help ensure a proper installation that safely directs generator power to home circuits during outages. The kit is positioned as a professional-grade choice for reliable emergency power handling.
QYZZRS Interlock Kit For Eaton Cutler Hammer BR / CH Series
This interlock kit supports Eaton Cutler Hammer BR and CH series, offering 1 1/4 to 1 7/16 inch spacing between the main and generator breaker. The included installation notes emphasize aligning the screws first and simulating the setup to prevent misalignment. It targets 150–200 amp panels and aims to deliver safe, dependable backfeeding for portable generators.
WHXMHRQ Interlock Kit For Square D QO / Homeline 150–200 Amp
This interlock kit matches Square D QO and Homeline panels, requiring a 1 3/8 inch spacing between main and generator breakers. It includes a drill bit and steel construction for durability, with installation notes guiding screw attachment prior to testing for alignment. The kit supports straightforward integration with 150–200 amp panels and aims to maintain uninterrupted essential loads during outages.
Buying Guide: Key Purchase Considerations
When selecting a generator interlock kit, consider panel compatibility (Eaton BR, Square D QO, Homeline), required spacing between main and generator breakers, and the ease of installation. Durability and materials affect long-term reliability, especially in residential environments. Confirm that the kit includes all necessary mounting hardware, a drill bit if required, and clear installation instructions. Compare lead times, warranty coverage, and reviews related to alignment accuracy during installation. Finally, assess whether the kit supports your intended generator size and whether it allows safe, code-compliant backfeeding without modifying the main service disconnect.
Important considerations include:
- Panel compatibility: Ensure the kit supports your exact panel model and amp rating (150/200 amp commonly targeted).
- Spacing requirements: Verify the precise distance between main and generator breakers to avoid fit issues.
- Installation practicality: Look for kits with straightforward steps, included hardware, and test procedures to confirm alignment.
- Build quality: Durable steel or alloy components reduce wear over time and improve safety.
- Safety and compliance: Check that the kit aligns with local electrical codes and recommendations for generator backfeeding.