The Homeline HOM120 delivers exactly what residential electricians need: 20A/120-240V AC protection with a 10,000 AIR interrupt rating at a price that won’t blow the budget. Accepts either one 14-8 AWG copper/aluminum wire or two 14-10 AWG copper wires in its clamp terminal, which saves time on kitchen circuits where you’re feeding multiple outlets. The HACR rating means it handles HVAC equipment without special considerations — crucial when Montana’s temperature swings push heating and cooling systems hard.
Technical Specifications That Matter
Plug-on mounting for Homeline load centers only — won’t work in QO panels, so check what’s installed before ordering. The 10 kA interrupt rating provides solid fault protection for residential work. That’s plenty for most homes, though commercial jobs might need higher ratings.
| Specification | Value |
|---|---|
| Amperage | 20 A |
| Voltage Rating | 120/240 V AC |
| Interrupt Rating | 10 kA (10,000 AIR) |
| Poles | 1 |
| Phase | Single Phase |
| Mounting | Plug-on |
| Wire Size | 1x AWG 14-8 (Copper/Aluminum) or 2x AWG 14-10 (Copper) |
| Torque | 35.4 lbf.in (4.0 N.m) |
| Terminal Type | Clamp terminal |
The 35.4 lb-in torque requirement isn’t just a suggestion. Under-torqued connections cause callbacks. Over-torqued terminals strip out. Get a torque screwdriver if you’re doing volume work.
Real-World Installation
Lacks visual trip indicator found on QO series — you’ll be flipping breakers to find which one tripped. Minor annoyance on a 20-circuit panel, real pain on a maxed-out 40-space box. The 1-inch width per pole takes standard spacing, nothing special there.
Installation stays simple. Turn off main power to the load center. Insert the breaker into the desired slot by aligning the plug-on jaw with the bus bar. Press firmly until the breaker clicks into place. Connect the load wire(s) to the clamp terminal. Tighten the terminal screw to 35.4 lb-in (4.0 N.m). Nothing tricky, but that torque spec matters.
Must be installed in a Square D Homeline load center or CSED. Won’t fit Eaton BR, Siemens, or even Square D’s own QO panels. Check compatibility before buying a case of them.
Where It Works Best
HACR rated for use with heating, air-conditioning, and refrigeration equipment opens up HVAC applications. Montana’s -30°F to 90°F temperature swings demand equipment that handles inductive loads reliably. This breaker won’t nuisance trip when the heat pump kicks on during a January cold snap.
Standard applications include:
- General lighting circuits
- Receptacle/Outlet circuits
- Kitchen/Laundry appliances (dishwashers, disposals)
- HACR equipment
The dual-wire terminal capability shines in kitchens. Run your disposal and dishwasher off one breaker without wire nuts in the panel.
Average rating of 4.7 stars across 1,827 reviews tells the reliability story. Most users report that it fits perfectly in their Square D Homeline panels and functions as expected for standard residential circuits. Contractors aren’t writing love letters about circuit breakers — that high rating means it does the job without callbacks.
The warranty covers 18 months through Schneider Electric. Standard manufacturer coverage, nothing special. But breakers either fail immediately or run for decades.
Skip the HOM120 if you’re in a QO panel — won’t fit. QO series offers 3/4-inch width per pole and features Visi-Trip red indicator for easier troubleshooting, but costs more. For standard Homeline residential work where the price matters and callbacks don’t, the HOM120 delivers.
Frequently Asked Questions
Q: Will this breaker work in my Square D QO panel? A: No. Must be installed in a Square D Homeline load center or CSED. QO panels require QO breakers — different mounting system entirely.
Q: Can I use aluminum wire with this breaker? A: Yes. Accepts 14-8 AWG copper/aluminum wire. Use proper anti-oxidant compound on aluminum connections.
Q: What’s the actual interrupt rating? A: 10 kA (10,000 AIR). Sufficient for residential applications but check your service entrance rating for coordination.
Q: Does it have GFCI or AFCI protection? A: No. This is a standard thermal-magnetic breaker. Order HOM120GFCI or HOM120AFCI models for those protections.
Q: How many wires can I land in the terminal? A: Accepts two wires in a single terminal — specifically 2x AWG 14-10 (Copper) or one larger wire up to 8 AWG.
Ready to Get Started?
Our building materials specialists can help you find the right Square D products for your project.
More from Square D
Explore All Square D Products
We carry Square D across all 11 Montana and Idaho stores.
