Breakthrough Current Breakthrough Current |
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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. Use with Square D QO circuit breakers. Also known as load centers.
Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
NEMA 1 rated boxes are for indoor use.
NEMA 3R rated boxes are for outdoor use.
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of Spaces | Current, A | Voltage | Frequency, Hz | Breakthrough Current | Mounting Style | Bus Bar Material | Attachment Style | Closure Method | Ht. | Wd. | Dp. | Each | |
NEMA 1 Rated Boxes | |||||||||||||
| 2 | 70 | 120V AC/240V AC | 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" | 0000000 | 000000 |
| 12 | 125 | 120V AC/240V AC | 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" | 0000000 | 000000 |
NEMA 3R Rated Boxes | |||||||||||||
| 6 | 100 | 120V AC/240V AC | 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" | 0000000 | 00000 |
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.
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. | Each | |
NEMA 1 Rated Boxes | |||||||||||||
| 12 | 100 | 120V AC/240V AC | 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" | 0000000 | 0000000 |
| 20 | 100 | 120V AC/240V AC | 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" | 0000000 | 000000 |
Square D Homeline Circuit Breaker Boxes
Use these boxes with Homeline series circuit breakers and connect them 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.
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. | Each | |
NEMA 1 Rated Boxes | |||||||||||||
| 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" | 0000000 | 000000 |