Panels for Enclosures
Install components and make electrical connections on a panel, then mount the panel in your enclosure. Using a panel means you won’t need to make holes in the body of your enclosure, which could let in dust and water. Choose a panel made of the same material as your enclosure or a material that works for your environment.
White-painted steel panels work for most applications. The bright white color reflects light and makes it easier to see inside the enclosure.
Galvanized steel panels are good conductors of electricity. Connect the panel to your grounding path to prevent static sparks.
Aluminum panels conduct heat better than panels made from other materials, so they can help dissipate heat inside your enclosure. These panels offer corrosion resistance similar to stainless steel, but they weigh much less.
304 stainless steel panels are the best choice for 304 stainless steel enclosures. They won’t corrode in damp environments.
316 stainless steel panels are the best choice for 316 stainless steel enclosures. They resist corrosion from salt water and chemicals.
Polycarbonate plastic panels don't block wireless or radio signals, so they work well for wi-fi-enabled components. These panels are corrosion resistant and easier to machine than metal panels.
For technical drawings and 3-D models, click on a part number.
Mounting Hole Ctr.-to-Ctr. | ||||||
|---|---|---|---|---|---|---|
| Ht. | Wd. | Ht. | Wd. | No. of Mounting Holes | Each | |
White Painted Steel | ||||||
| 4 1/4" | 2 1/4" | 3 5/8" | 1 5/8" | 4 | 00000000 | 00000 |
| 4 1/4" | 4 1/4" | 3 5/8" | 3 5/8" | 4 | 00000000 | 0000 |
| 4 7/8" | 2 7/8" | 4 1/4" | 2 1/4" | 4 | 0000000 | 0000 |
| 4 7/8" | 4 7/8" | 4 1/4" | 4 1/4" | 4 | 0000000 | 0000 |
| 6 1/4" | 4 1/4" | 5 5/8" | 3 5/8" | 4 | 00000000 | 0000 |
| 6 1/4" | 6 1/4" | 5 5/8" | 5 5/8" | 4 | 00000000 | 0000 |
| 6 3/4" | 4 7/8" | 6 1/4" | 4 1/4" | 4 | 0000000 | 0000 |
| 6 3/4" | 6 7/8" | 6 1/4" | 6 1/4" | 4 | 0000000 | 0000 |
| 8 1/4" | 6 1/4" | 7 5/8" | 5 5/8" | 4 | 00000000 | 0000 |
| 8 1/4" | 8 1/4" | 7 5/8" | 7 5/8" | 4 | 00000000 | 00000 |
| 8 3/4" | 6 7/8" | 8 1/4" | 6 1/4" | 4 | 0000000 | 0000 |
| 8 3/4" | 8 7/8" | 8 1/4" | 8 1/4" | 4 | 0000000 | 00000 |
| 9" | 9" | 7 1/4" | 7 1/4" | 4 | 0000000 | 00000 |
| 10 1/4" | 8 1/4" | 9 5/8" | 7 5/8" | 4 | 00000000 | 00000 |
| 10 1/4" | 10 1/4" | 9 5/8" | 9 5/8" | 4 | 00000000 | 00000 |
| 10 3/4" | 4 7/8" | 10 1/4" | 4 1/4" | 4 | 0000000 | 0000 |
| 10 3/4" | 8 7/8" | 10 1/4" | 8 1/4" | 4 | 0000000 | 00000 |
| 10 3/4" | 10 7/8" | 10 1/4" | 10 1/4" | 4 | 0000000 | 00000 |
| 12 1/4" | 10 1/4" | 11 5/8" | 9 5/8" | 4 | 00000000 | 00000 |
| 12 3/4" | 6 7/8" | 12 1/4" | 6 1/4" | 4 | 0000000 | 00000 |
| 12 3/4" | 10 7/8" | 12 1/4" | 10 1/4" | 4 | 0000000 | 00000 |
| 13" | 9" | 11 1/4" | 7 1/4" | 4 | 0000000 | 00000 |
| 13" | 10 1/2" | 11 1/2" | 9" | 4 | 0000000 | 00000 |
| 13" | 13" | 11 1/4" | 11 1/4" | 4 | 0000000 | 00000 |
| 13" | 14 1/2" | 11 1/2" | 13" | 4 | 0000000 | 00000 |
| 13" | 18 1/2" | 11 1/2" | 17" | 4 | 0000000 | 00000 |
| 14 1/4" | 10 1/4" | 13 5/8" | 9 5/8" | 4 | 00000000 | 00000 |
| 14 3/4" | 8 7/8" | 14 1/4" | 8 1/4" | 4 | 0000000 | 00000 |
| 14 3/4" | 12 7/8" | 14 1/4" | 12 1/4" | 4 | 0000000 | 00000 |
| 15" | 15" | 13 1/4" | 13 1/4" | 4 | 0000000 | 00000 |
| 17" | 9" | 15 1/4" | 7 1/4" | 4 | 0000000 | 00000 |
| 17" | 13" | 15 1/4" | 11 1/4" | 4 | 0000000 | 00000 |
| 17" | 14 1/2" | 15 1/2" | 13" | 4 | 0000000 | 00000 |
| 17" | 17" | 15 1/4" | 15 1/4" | 4 | 0000000 | 00000 |
| 17" | 18 1/2" | 15 1/2" | 17" | 4 | 0000000 | 00000 |
| 17" | 22 1/2" | 15 1/2" | 21" | 4 | 0000000 | 00000 |
| 18 1/4" | 10 1/4" | 17 5/8" | 9 5/8" | 4 | 00000000 | 00000 |
| 21" | 14 1/2" | 19 1/2" | 13" | 4 | 0000000 | 00000 |
| 21" | 18 1/2" | 19 1/2" | 17" | 4 | 0000000 | 00000 |
| 21" | 22 1/2" | 19 1/2" | 21" | 4 | 0000000 | 00000 |
| 26" | 18 1/2" | 12 1/4" | 17" | 6 | 0000000 | 00000 |
| 26" | 22 1/2" | 12 1/4" | 21" | 6 | 00000000 | 00000 |
| 26" | 28 1/2" | 12 1/4" | 13 1/2" | 8 | 00000000 | 00000 |
| 32" | 22 1/2" | 15 1/4" | 21" | 6 | 00000000 | 00000 |
| 32" | 28 1/2" | 15 1/4" | 13 1/2" | 8 | 00000000 | 000000 |
| 38" | 22 1/2" | 18 1/4" | 21" | 6 | 00000000 | 000000 |
| 38" | 28 1/2" | 18 1/4" | 13 1/2" | 8 | 00000000 | 000000 |
| 38" | 34 1/2" | 18 1/4" | 16 1/2" | 8 | 00000000 | 000000 |
| 44" | 34 1/2" | 21 1/4" | 16 1/2" | 8 | 00000000 | 000000 |
Galvanized Steel | ||||||
| 4 7/8" | 2 7/8" | 4 1/4" | 2 1/4" | 4 | 0000000 | 0000 |
| 4 7/8" | 4 7/8" | 4 1/4" | 4 1/4" | 4 | 0000000 | 0000 |
| 6 3/4" | 4 7/8" | 6 1/4" | 4 1/4" | 4 | 0000000 | 0000 |
| 6 3/4" | 6 7/8" | 6 1/4" | 6 1/4" | 4 | 0000000 | 0000 |
| 8 3/4" | 6 7/8" | 8 1/4" | 6 1/4" | 4 | 0000000 | 0000 |
| 8 3/4" | 8 7/8" | 8 1/4" | 8 1/4" | 4 | 0000000 | 00000 |
| 9" | 9" | 7 1/4" | 7 1/4" | 4 | 0000000 | 00000 |
| 10 3/4" | 4 7/8" | 10 1/4" | 4 1/4" | 4 | 0000000 | 0000 |
| 10 3/4" | 8 7/8" | 10 1/4" | 8 1/4" | 4 | 0000000 | 00000 |
| 10 3/4" | 10 7/8" | 10 1/4" | 10 1/4" | 4 | 0000000 | 00000 |
| 12 3/4" | 6 7/8" | 12 1/4" | 6 1/4" | 4 | 0000000 | 00000 |
| 12 3/4" | 10 7/8" | 12 1/4" | 10 1/4" | 4 | 0000000 | 00000 |
| 13" | 9" | 11 1/4" | 7 1/4" | 4 | 0000000 | 00000 |
| 13" | 13" | 11 1/4" | 11 1/4" | 4 | 0000000 | 00000 |
| 14 3/4" | 8 7/8" | 14 1/4" | 8 1/4" | 4 | 0000000 | 00000 |
| 14 3/4" | 12 7/8" | 14 1/4" | 12 1/4" | 4 | 0000000 | 00000 |
| 15" | 15" | 13 1/4" | 13 1/4" | 4 | 0000000 | 00000 |
| 17" | 9" | 15 1/4" | 7 1/4" | 4 | 0000000 | 00000 |
| 17" | 13" | 15 1/4" | 11 1/4" | 4 | 0000000 | 00000 |
| 17" | 17" | 15 1/4" | 15 1/4" | 4 | 0000000 | 00000 |
Aluminum  | ||||||
| 4 7/8" | 2 7/8" | 4 1/4" | 2 1/4" | 4 | 0000000 | 0000 |
| 4 7/8" | 4 7/8" | 4 1/4" | 4 1/4" | 4 | 0000000 | 0000 |
| 6 3/4" | 4 7/8" | 6 1/4" | 4 1/4" | 4 | 0000000 | 0000 |
| 6 3/4" | 6 7/8" | 6 1/4" | 6 1/4" | 4 | 0000000 | 00000 |
| 8 3/4" | 6 7/8" | 8 1/4" | 6 1/4" | 4 | 0000000 | 00000 |
| 8 3/4" | 8 7/8" | 8 1/4" | 8 1/4" | 4 | 0000000 | 00000 |
| 10 3/4" | 4 7/8" | 10 1/4" | 4 1/4" | 4 | 0000000 | 00000 |
| 10 3/4" | 8 7/8" | 10 1/4" | 8 1/4" | 4 | 0000000 | 00000 |
| 10 3/4" | 10 7/8" | 10 1/4" | 10 1/4" | 4 | 0000000 | 00000 |
| 12 3/4" | 6 7/8" | 12 1/4" | 6 1/4" | 4 | 0000000 | 00000 |
| 12 3/4" | 10 7/8" | 12 1/4" | 10 1/4" | 4 | 0000000 | 00000 |
| 13" | 9" | 11 1/4" | 7 1/4" | 4 | 0000000 | 00000 |
| 13" | 13" | 11 1/4" | 11 1/4" | 4 | 0000000 | 00000 |
| 14 3/4" | 8 7/8" | 14 1/4" | 8 1/4" | 4 | 0000000 | 00000 |
| 14 3/4" | 12 7/8" | 14 1/4" | 12 1/4" | 4 | 0000000 | 00000 |
| 17" | 13" | 15 1/4" | 11 1/4" | 4 | 0000000 | 00000 |
| 17" | 17" | 15 1/4" | 15 1/4" | 4 | 0000000 | 00000 |
304 Stainless Steel | ||||||
| 4 7/8" | 2 7/8" | 4 1/4" | 2 1/4" | 4 | 0000000 | 00000 |
| 4 7/8" | 4 7/8" | 4 1/4" | 4 1/4" | 4 | 0000000 | 00000 |
| 6 3/4" | 4 7/8" | 6 1/4" | 4 1/4" | 4 | 0000000 | 00000 |
| 6 3/4" | 6 7/8" | 6 1/4" | 6 1/4" | 4 | 0000000 | 00000 |
| 8 3/4" | 6 7/8" | 8 1/4" | 6 1/4" | 4 | 0000000 | 00000 |
| 8 3/4" | 8 7/8" | 8 1/4" | 8 1/4" | 4 | 0000000 | 00000 |
| 10 3/4" | 8 7/8" | 10 1/4" | 8 1/4" | 4 | 0000000 | 00000 |
| 10 3/4" | 10 7/8" | 10 1/4" | 10 1/4" | 4 | 0000000 | 00000 |
| 12 3/4" | 10 7/8" | 12 1/4" | 10 1/4" | 4 | 0000000 | 00000 |
| 14 3/4" | 12 7/8" | 14 1/4" | 12 1/4" | 4 | 0000000 | 00000 |
316 Stainless Steel | ||||||
| 4 7/8" | 4 7/8" | 4 1/4" | 4 1/4" | 4 | 00000000 | 00000 |
| 6 7/8" | 4 7/8" | 6 1/4" | 4 1/4" | 4 | 00000000 | 00000 |
| 6 7/8" | 6 7/8" | 6 1/4" | 6 1/4" | 4 | 00000000 | 00000 |
| 8 7/8" | 6 7/8" | 8 1/4" | 6 1/4" | 4 | 00000000 | 00000 |
| 10 7/8" | 8 7/8" | 10 1/4" | 8 1/4" | 4 | 00000000 | 00000 |
| 10 7/8" | 10 7/8" | 10 1/4" | 10 1/4" | 4 | 00000000 | 00000 |
| 12 7/8" | 10 7/8" | 12 1/4" | 10 1/4" | 4 | 00000000 | 000000 |
| 13" | 9" | 11 1/4" | 7 1/4" | 4 | 0000000 | 00000 |
| 13" | 13" | 11 1/4" | 11 1/4" | 4 | 0000000 | 000000 |
| 14 7/8" | 12 7/8" | 14 1/4" | 12 1/4" | 4 | 00000000 | 000000 |
| 17" | 13" | 15 1/4" | 11 1/4" | 4 | 0000000 | 000000 |
| 17" | 17" | 15 1/4" | 15 1/4" | 4 | 0000000 | 000000 |
Gray Polycarbonate Plastic | ||||||
| 4 7/8" | 4 7/8" | 4 1/4" | 4 1/4" | 4 | 00000000 | 00000 |
| 6 7/8" | 4 7/8" | 6 1/4" | 4 1/4" | 4 | 00000000 | 00000 |
| 6 7/8" | 6 7/8" | 6 1/4" | 6 1/4" | 4 | 00000000 | 00000 |
| 8 7/8" | 6 7/8" | 8 1/4" | 6 1/4" | 4 | 00000000 | 00000 |
| 8 7/8" | 8 7/8" | 8 1/4" | 8 1/4" | 4 | 00000000 | 00000 |
| 10 7/8" | 8 7/8" | 10 1/4" | 8 1/4" | 4 | 00000000 | 00000 |
| 12 7/8" | 10 7/8" | 12 1/4" | 10 1/4" | 4 | 00000000 | 00000 |
| 14 7/8" | 12 7/8" | 14 1/4" | 12 1/4" | 4 | 00000000 | 00000 |
| 16 3/4" | 14 7/8" | 16 1/4" | 14 1/4" | 4 | 00000000 | 000000 |
| 18 7/8" | 14 7/8" | 18" | 14 1/4" | 4 | 00000000 | 000000 |
| 22 7/8" | 18 7/8" | 22" | 18" | 4 | 00000000 | 000000 |
| 23" | 23" | 22" | 22" | 4 | 00000000 | 000000 |
Perforated Panels for Enclosures
Unlike solid panels, these panels have a grid of holes sized to fit self-tapping screws, so there’s nothing to measure, mark, or cut. Mount components to the panel, then install it in your enclosure. Using a panel helps keep dust and water out because components mount on the panel and not through holes in the enclosure itself.
For technical drawings and 3-D models, click on a part number.
Mounting Hole Ctr.-to-Ctr. | Hole | |||||||
|---|---|---|---|---|---|---|---|---|
| Ht. | Wd. | Ht. | Wd. | Dia. | Ctr.-to-Ctr. | No. of Mounting Holes | Each | |
Gray Powder-Coated Steel | ||||||||
| 4 1/4" | 4 1/4" | 3 5/8" | 3 5/8" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 6 1/4" | 4 1/4" | 5 5/8" | 3 5/8" | 1/8" | 0.25" | 4 | 0000000 | 0000 |
| 6 1/4" | 6 1/4" | 5 5/8" | 5 5/8" | 1/8" | 0.25" | 4 | 0000000 | 0000 |
| 8 1/4" | 6 1/4" | 7 5/8" | 5 5/8" | 1/8" | 0.25" | 4 | 0000000 | 0000 |
| 8 1/4" | 8 1/4" | 7 5/8" | 7 5/8" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 10 1/4" | 8 1/4" | 9 5/8" | 7 5/8" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 10 1/4" | 10 1/4" | 9 5/8" | 9 5/8" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 12 1/4" | 10 1/4" | 11 5/8" | 9 5/8" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 13" | 9" | 11 1/4" | 7 1/4" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 13" | 10 1/2" | 11 1/2" | 9" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 13" | 13" | 11 1/4" | 11 1/4" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 13" | 14 1/2" | 11 1/2" | 13" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 13" | 18 1/2" | 11 1/2" | 17" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 14 1/4" | 10 1/4" | 13 5/8" | 9 5/8" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 15" | 15" | 13 1/4" | 13 1/4" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 17" | 13" | 15 1/4" | 11 1/4" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 17" | 14 1/2" | 15 1/2" | 13" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 17" | 17" | 15 1/4" | 15 1/4" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 17" | 18 1/2" | 15 1/2" | 17" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 17" | 22 1/2" | 15 1/2" | 21" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 18 1/4" | 10 1/4" | 17 5/8" | 9 5/8" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 21" | 14 1/2" | 19 1/2" | 13" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 21" | 18 1/2" | 19 1/2" | 17" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 21" | 22 1/2" | 19 1/2" | 21" | 1/8" | 0.25" | 4 | 0000000 | 00000 |
| 26" | 18 1/2" | 12 1/4" | 17" | 1/8" | 0.25" | 6 | 0000000 | 00000 |
| 26" | 22 1/2" | 12 1/4" | 21" | 1/8" | 0.25" | 6 | 0000000 | 00000 |
| 26" | 28 1/2" | 12 1/4" | 13 1/2" | 1/8" | 0.25" | 8 | 0000000 | 000000 |
| 32" | 22 1/2" | 15 1/4" | 21" | 1/8" | 0.25" | 6 | 0000000 | 000000 |
| 32" | 28 1/2" | 15 1/4" | 13 1/2" | 1/8" | 0.25" | 8 | 0000000 | 000000 |
| 38" | 22 1/2" | 18 1/4" | 21" | 1/8" | 0.25" | 6 | 0000000 | 000000 |
Square D Secondary Circuit Breaker Boxes
Connect these boxes to a main box—they do not have a main circuit breaker switch. They are single-phase, 3-wire, and can be mounted for top or bottom feed conduit connections. Also known as load centers.
NEMA 1 rated boxes are for indoor use.
NEMA 3R rated boxes are for outdoor use.
Circuit breakers meet UL 489 requirements for branch circuit protection, so they protect downstream equipment and wiring from overloads and short circuits. Circuit breakers with ground fault sensitivity will trip if they detect a current leak above 6mA. This minimizes the risk of electric shock to workers and equipment.
Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
Cover | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Spaces | Current, A | Voltage | Frequency, Hz | Breakthrough Current | Mounting Style | Bus Bar Material | Attachment Style | Closure Method | Ht. | Wd. | Dp. | Specifications Met | Each | |
NEMA 1 Rated | ||||||||||||||
| 2 | 70 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Surface | Tin-Plated Copper | Lift Off | Screws | 9 1/4" | 4 7/8" | 3 1/4" | UL Listed | 0000000 | 000000 |
| 8 | 100 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Surface | Tin-Plated Copper | Lift Off | Screws | 12 5/8" | 8 7/8" | 3 3/4" | UL Listed | 0000000 | 000000 |
| 12 | 125 | 120V AC/240V AC | 50/60 | 65,000 A @ 120 V AC 65,000 A @ 240 V AC | Surface | Tin-Plated Copper | Lift Off | Screws | 17 7/8" | 14 1/4" | 3 3/4" | UL Listed | 0000000 | 000000 |
NEMA 3R Rated | ||||||||||||||
| 6 | 100 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Surface | Tin-Plated Copper | Hinged | Latch | 12 5/8" | 8 7/8" | 4 1/4" | UL Listed | 0000000 | 000000 |
| 12 | 125 | 120V AC/240V AC | 50/60 | 65,000 A @ 120 V AC 65,000 A @ 240 V AC | Surface | Tin-Plated Copper | Hinged | Latch | 18 7/8" | 14 3/4" | 4 1/2" | UL Listed | 0000000 | 000000 |
| 24 | 125 | 120V AC/240V AC | 50/60 | 65,000 A @ 120 V AC 65,000 A @ 240 V AC | Surface | Tin-Plated Copper | Hinged | Latch | 22" | 14 3/4" | 4 1/2" | UL Listed | 0000000 | 000000 |
| Current, A | Voltage | Frequency, Hz | Breakthrough Current | Mounting Location | Wire Connection Type | Wd. | Specifications Met | Each | |
QO Series | |||||||||
|---|---|---|---|---|---|---|---|---|---|
1 Pole—Toggle Style | |||||||||
| 15 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 3/4" | UL 489, UL Listed | 00000000 | 000000 |
| 20 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 3/4" | UL 489, UL Listed | 00000000 | 00000 |
| 30 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 3/4" | UL 489, UL Listed | 0000000 | 00000 |
| 40 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 3/4" | UL 489, UL Listed | 00000000 | 00000 |
2 Pole—Toggle Style | |||||||||
| 15 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 00000000 | 00000 |
| 20 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 00000000 | 00000 |
| 30 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 00000000 | 00000 |
| 40 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 00000000 | 00000 |
| 50 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 00000000 | 00000 |
| 60 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 00000000 | 00000 |
| 70 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 0000000 | 000000 |
3 Pole—Toggle Style | |||||||||
| 15 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 2 1/4" | UL 489, UL Listed | 00000000 | 000000 |
| 15, 20, 30, 40 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 2 1/4" | UL 489, UL Listed | 000000 | 000000 |
| 20 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 2 1/4" | UL 489, UL Listed | 00000000 | 000000 |
| 30 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 2 1/4" | UL 489, UL Listed | 00000000 | 000000 |
| 40 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 2 1/4" | UL 489, UL Listed | 00000000 | 000000 |
QO Series with 6mA Ground Fault Sensitivity | |||||||||
1 Pole—Toggle Style | |||||||||
| 20 | 120V AC | 50/60 | 10,000 A @ 120 V AC | Breaker Box | Snap On | 3/4" | UL 489, UL Listed | 00000000 | 000000 |
| 20, 30 | 120V AC | 50/60 | 10,000 A @ 120 V AC | Breaker Box | Snap On | 3/4" | UL 489, UL Listed | 0000000 | 000000 |
| 30 | 120V AC | 50/60 | 10,000 A @ 120 V AC | Breaker Box | Snap On | 3/4" | UL 489, UL Listed | 00000000 | 000000 |
2 Pole—Toggle Style | |||||||||
| 20 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 00000000 | 000000 |
| 20, 30 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 0000000 | 000000 |
| 30 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 00000000 | 000000 |
Square D Main Circuit Breaker Boxes
These boxes have a main circuit breaker switch and main service knockouts in the corners. They are single-phase, 3-wire, and can be mounted for top or bottom feed conduit connections. Use with Square D QO circuit breakers. Boxes are rated NEMA 1 for indoor use. Also known as load centers.
Circuit breakers meet UL 489 requirements for branch circuit protection, so they protect downstream equipment and wiring from overloads and short circuits. Circuit breakers with ground fault sensitivity will trip if they detect a current leak above 6mA. This minimizes the risk of electric shock to workers and equipment.
Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
Cover | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Spaces | Current, A | Voltage | Frequency, Hz | Breakthrough Current | Mounting Style | Bus Bar Material | Attachment Style | Closure Method | Ht. | Wd. | Dp. | Specifications Met | Each | |
NEMA 1 Rated | ||||||||||||||
| 12 | 100 | 120V AC/240V AC | 50/60 | 22,000 A @ 120 V AC 22,000 A @ 240 V AC | Recessed, Surface | Tin-Plated Copper | Lift Off | Screws | 14 7/8" | 14 1/4" | 3 3/4" | UL Listed | 0000000 | 0000000 |
| 20 | 100 | 120V AC/240V AC | 50/60 | 22,000 A @ 120 V AC 22,000 A @ 240 V AC | Recessed, Surface | Tin-Plated Copper | Lift Off | Screws | 17 7/8" | 14 1/4" | 3 3/4" | UL Listed | 0000000 | 000000 |
| 30 | 200 | 120V AC/240V AC | 50/60 | 22,000 A @ 120 V AC 22,000 A @ 240 V AC | Recessed, Surface | Tin-Plated Copper | Lift Off | Screws | 29 7/8" | 14 1/4" | 3 3/4" | UL Listed | 0000000 | 00000000 |
| 40 | 200 | 120V AC/240V AC | 50/60 | 22,000 A @ 120 V AC 22,000 A @ 240 V AC | Recessed, Surface | Tin-Plated Copper | Lift Off | Screws | 33 3/4" | 14 1/4" | 3 3/4" | UL Listed | 0000000 | 00000000 |
| Current, A | Voltage | Frequency, Hz | Breakthrough Current | Mounting Location | Wire Connection Type | Wd. | Specifications Met | Each | |
QO Series | |||||||||
|---|---|---|---|---|---|---|---|---|---|
1 Pole—Toggle Style | |||||||||
| 15 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 3/4" | UL 489, UL Listed | 00000000 | 000000 |
| 20 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 3/4" | UL 489, UL Listed | 00000000 | 00000 |
| 30 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 3/4" | UL 489, UL Listed | 0000000 | 00000 |
| 40 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 3/4" | UL 489, UL Listed | 00000000 | 00000 |
2 Pole—Toggle Style | |||||||||
| 15 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 00000000 | 00000 |
| 20 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 00000000 | 00000 |
| 30 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 00000000 | 00000 |
| 40 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 00000000 | 00000 |
| 50 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 00000000 | 00000 |
| 60 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 00000000 | 00000 |
| 70 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 0000000 | 000000 |
3 Pole—Toggle Style | |||||||||
| 15 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 2 1/4" | UL 489, UL Listed | 00000000 | 000000 |
| 20 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 2 1/4" | UL 489, UL Listed | 00000000 | 000000 |
| 30 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 2 1/4" | UL 489, UL Listed | 00000000 | 000000 |
| 40 | 120V AC/240V AC/48V DC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC 5,000 A @ 48 V DC | Breaker Box | Snap On | 2 1/4" | UL 489, UL Listed | 00000000 | 000000 |
QO Series with 6mA Ground Fault Sensitivity | |||||||||
1 Pole—Toggle Style | |||||||||
| 20 | 120V AC | 50/60 | 10,000 A @ 120 V AC | Breaker Box | Snap On | 3/4" | UL 489, UL Listed | 00000000 | 000000 |
| 30 | 120V AC | 50/60 | 10,000 A @ 120 V AC | Breaker Box | Snap On | 3/4" | UL 489, UL Listed | 00000000 | 000000 |
2 Pole—Toggle Style | |||||||||
| 20 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 00000000 | 000000 |
| 30 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 1 1/2" | UL 489, UL Listed | 00000000 | 000000 |
Square D Homeline Secondary Circuit Breaker Boxes
Connect these boxes to a main box—they do not have a main circuit breaker switch. They are single-phase, 3-wire, and can be mounted for top or bottom feed conduit connections. Boxes are rated NEMA 1 for indoor use. Also known as load centers.
Circuit breakers meet UL 489 requirements for branch circuit protection, so they protect downstream equipment and wiring from overloads and short circuits. Circuit breakers with ground fault sensitivity will trip if they detect a current leak above 6mA. This minimizes the risk of electric shock to workers and equipment.
Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
For technical drawings and 3-D models, click on a part number.
Cover | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Spaces | Current, A | Voltage | Frequency, Hz | Breakthrough Current | Mounting Style | Bus Bar Material | Attachment Style | Closure Method | Ht. | Wd. | Dp. | Specifications Met | Each | |
NEMA 1 Rated | ||||||||||||||
| 6 | 100 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Surface | Tin-Plated Aluminum | Lift Off | Screws | 12 5/8" | 8 7/8" | 3 7/8" | UL Listed | 0000000 | 000000 |
| 12 | 125 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Recessed, Surface | Tin-Plated Aluminum | Lift Off | Screws | 17 7/8" | 14 1/4" | 3 3/4" | UL Listed | 0000000 | 00000 |
| 20 | 125 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Recessed, Surface | Tin-Plated Aluminum | Lift Off | Screws | 26" | 14 1/4" | 3 3/4" | UL Listed | 0000000 | 00000 |
Series, 1
Tandem Pole
| Current, A | Voltage | Frequency, Hz | Breakthrough Current | Mounting Location | Wire Connection Type | Wd. | Specifications Met | Each | |
Homeline Series | |||||||||
|---|---|---|---|---|---|---|---|---|---|
1 Pole—Toggle Style | |||||||||
| 15 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 1" | UL 489, UL Listed | 00000000 | 000000 |
| 20 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 1" | UL 489, UL Listed | 00000000 | 00000 |
| 30 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 1" | UL 489, UL Listed | 00000000 | 00000 |
| 40 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 1" | UL 489, UL Listed | 00000000 | 00000 |
| 50 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 1" | UL 489, UL Listed | 000000000 | 00000 |
1 Pole with Tandem Circuit—Toggle Style | |||||||||
| 20 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 1" | UL 489, UL Listed | 00000000 | 00000 |
2 Pole—Toggle Style | |||||||||
| 15 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 2" | UL 489, UL Listed | 00000000 | 00000 |
| 20 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 2" | UL 489, UL Listed | 00000000 | 00000 |
| 30 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 2" | UL 489, UL Listed | 00000000 | 00000 |
| 40 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 2" | UL 489, UL Listed | 00000000 | 00000 |
| 50 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 2" | UL 489, UL Listed | 000000000 | 00000 |
| 60 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 2" | UL 489, UL Listed | 000000000 | 00000 |
Homeline Series with 6mA Ground Fault Sensitivity | |||||||||
1 Pole—Toggle Style | |||||||||
| 20 | 120V AC | 50/60 | 10,000 A @ 120 V AC | Breaker Box | Snap On | 1" | UL 489, UL Listed | 00000000 | 000000 |
2 Pole—Toggle Style | |||||||||
| 20 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 2" | UL 489, UL Listed | 000000000 | 000000 |
| 30 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 2" | UL 489, UL Listed | 000000000 | 000000 |
Square D Homeline Main Circuit Breaker Boxes
With a main breaker installed and main service knockouts, these boxes are the entry point for electricity into your facility and the first step in protecting your electrical systems. They are single-phase, 3-wire, and can be mounted for top or bottom feed conduit connections. These boxes are rated NEMA 1 for indoor use. Also known as load centers.
Circuit breakers meet UL 489 requirements for branch circuit protection, so they protect downstream equipment and wiring from overloads and short circuits. Circuit breakers with ground fault sensitivity will trip if they detect a current leak above 6mA. This minimizes the risk of electric shock to workers and equipment.
Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
For technical drawings and 3-D models, click on a part number.
Cover | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Spaces | Current, A | Voltage | Frequency, Hz | Breakthrough Current | Mounting Style | Bus Bar Material | Attachment Style | Closure Method | Ht. | Wd. | Dp. | Specifications Met | Each | |
NEMA 1 Rated | ||||||||||||||
| 12 | 100 | 120V AC/240V AC | 50/60 | 22,000 A @ 120 V AC 22,000 A @ 240 V AC | Recessed, Surface | Tin-Plated Aluminum | Lift Off | Screws | 17 7/8" | 14 1/4" | 3 3/4" | UL Listed | 0000000 | 0000000 |
| 24 | 125 | 120V AC/240V AC | 50/60 | 22,000 A @ 120 V AC 22,000 A @ 240 V AC | Recessed, Surface | Tin-Plated Aluminum | Lift Off | Screws | 26" | 14 1/4" | 3 3/4" | UL Listed | 0000000 | 000000 |
Series, 1
Tandem Pole
| Current, A | Voltage | Frequency, Hz | Breakthrough Current | Mounting Location | Wire Connection Type | Wd. | Specifications Met | Each | |
Homeline Series | |||||||||
|---|---|---|---|---|---|---|---|---|---|
1 Pole—Toggle Style | |||||||||
| 15 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 1" | UL 489, UL Listed | 00000000 | 000000 |
| 20 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 1" | UL 489, UL Listed | 00000000 | 00000 |
| 30 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 1" | UL 489, UL Listed | 00000000 | 00000 |
| 40 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 1" | UL 489, UL Listed | 00000000 | 00000 |
| 50 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 1" | UL 489, UL Listed | 000000000 | 00000 |
1 Pole with Tandem Circuit—Toggle Style | |||||||||
| 20 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 1" | UL 489, UL Listed | 00000000 | 00000 |
2 Pole—Toggle Style | |||||||||
| 15 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 2" | UL 489, UL Listed | 00000000 | 00000 |
| 20 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 2" | UL 489, UL Listed | 00000000 | 00000 |
| 30 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 2" | UL 489, UL Listed | 00000000 | 00000 |
| 40 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 2" | UL 489, UL Listed | 00000000 | 00000 |
| 50 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 2" | UL 489, UL Listed | 000000000 | 00000 |
| 60 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 2" | UL 489, UL Listed | 000000000 | 00000 |
Homeline Series with 6mA Ground Fault Sensitivity | |||||||||
1 Pole—Toggle Style | |||||||||
| 20 | 120V AC | 50/60 | 10,000 A @ 120 V AC | Breaker Box | Snap On | 1" | UL 489, UL Listed | 00000000 | 000000 |
2 Pole—Toggle Style | |||||||||
| 20 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 2" | UL 489, UL Listed | 000000000 | 000000 |
| 30 | 120V AC/240V AC | 50/60 | 10,000 A @ 120 V AC 10,000 A @ 240 V AC | Breaker Box | Snap On | 2" | UL 489, UL Listed | 000000000 | 000000 |
Filler Plates for Circuit Breaker Boxes
Conceal live electrical components in circuit breaker boxes to prevent injury and damage. These filler plates snap into panel openings. They also have an adhesive strip, so they don’t move when you take the panel cover off.
For technical drawings and 3-D models, click on a part number.
| For Panel Cutout Wd. | For Manufacturer (Series) | Mount Type | Ht. | Wd. | Dp. | Material | Specifications Met | Each | |
| 3/4" | Square D (QO) Square D (QOB) | Snap In, Adhesive | 3/8" | 11/16" | 2 9/16" | Plastic | UL 94 V-2 | 0000000 | 00000 |
| 1" | Bryant Challenger Crouse-Hinds Cutler-Hammer (BR) General Electric Murray Siemens Square D (Homeline) Thomas & Betts Westinghouse | Snap In, Adhesive | 3/8" | 1" | 2 9/16" | Plastic | UL 94 V-2 | 0000000 | 0000 |