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| Stock Code | Length | Width | Height | Weight |
|---|---|---|---|---|
| PSB344 | 2.5 Inches | 3.7 Inches | 7.6 Inches | 0.433 Pounds |
| PSB368 | 4 Inches | 3.75 Inches | 4 Inches | 0.315 Pounds |
| PSB455 | 5.875 Inches | 3.75 Inches | 4 Inches | 0.384 Pounds |
| PSB487 | — | 9.75 Inches | 4 Inches | 0.467 Pounds |
PSB344
Product Specs
- Box Type:
- Switch Box
- Cubic Capacity:
- 44, 55, 68, 87 cu in
- Gang Options:
- 3-Gang, 4-Gang
- Mounting Feature:
- Nail-On
- Product Type:
- Non-metallic outlet boxes
- Product Group:
- Electrical Boxes
- Product Subgroup:
- Junction Boxes
- Product Material:
- Plastic
- Product Width:
- 9.75 inches (4-gang PSB487)
- Department:
- Electrical
Centaur PSB344 – Frequently Asked Questions
1) How many devices will a Centaur 3-gang or 4-gang nail-on plastic switch box hold?
Gang count is what sets device count here: the Centaur plastic switch boxes come 3-gang or 4-gang, so three or four switches, receptacles, or dimmers side by side behind a matching 3- or 4-gang plate. Cubic capacity runs 44, 55, 68, and 87 cu in across the range, with 44 and 68 cu in on the 3-gang and 55 and 87 cu in on the 4-gang. Pick the larger capacity in the same gang count when you are landing a lot of conductors, pigtails, and grounds in one box, which is normally where a device box gets tight.
2) Can nail-on plastic switch boxes be used in an existing finished wall, or is it new construction only?
Nail-on is a new-construction mount. The Centaur plastic switch boxes fasten through integral nail tabs directly into the face or side of a stud, which means the stud has to be exposed, so they go in before drywall on a new build, a gut, or an opened-up wall. If the wall is already closed and you are cutting into finished drywall, a nail-on box is the wrong choice; you want an old-work or remount box that clamps to the drywall itself. On a rough-in, the nail-on is the fast option, no brackets or screws.
3) What is the width of a Centaur 4-gang switch box, and will it fit between studs at 16 inches on center?
The 4-gang PSB487 measures 9.75 inches wide. Studs framed at 16 inches on center leave roughly 14-1/2 inches of clear bay, so a 9.75 inch box lands in a single bay with room to spare when it is nailed to one stud face. It is worth checking the bay before you commit a 4-gang on a wall with blocking, a corner post, or a doubled stud near the box location, because that is where the clear opening actually narrows.
4) Are Centaur nail-on switch boxes metal or plastic, and does that change how I ground the devices?
These are non-metallic boxes, plastic bodied. A plastic box is not a grounding path, so the equipment grounding conductors have to be joined in the box and pigtailed to each device's ground screw rather than relying on the box itself the way you would with a metal box and a grounding screw. That is the practical difference for an electrician on the rough-in: no bonding of the enclosure, but every device still needs its ground landed.
5) What are the box dimensions on the Centaur 3-gang and 4-gang plastic switch boxes?
Dimensions run per stock code. The 3-gang PSB344 measures 2.5 x 3.7 x 7.6 inches; the 3-gang PSB368 measures 4 x 3.75 x 4 inches; the 4-gang PSB455 measures 5.875 x 3.75 x 4 inches; and the 4-gang PSB487 is 9.75 inches wide by 4 inches. The number that usually decides the install is the 4 inch depth on the PSB368, PSB455, and PSB487, since that depth is what buys you the wire room behind a stack of devices in a 2x4 wall.
6) Is a plastic nail-on switch box acceptable for a commercial job, or do I need metal?
Centaur plastic nail-on switch boxes are built for both residential and commercial new-construction work where the wall is wood or metal-free stud framing and the wiring method suits a non-metallic enclosure. Where a commercial spec calls for conduit and metallic raceway, the raceway needs a metal box to maintain the metallic path, and a plastic box will not satisfy that. Read the drawing: NM cable to a stud wall is where these boxes belong; EMT to a device box is not.
7) Do Centaur nail-on switch boxes need a bracket or mounting screws?
No extra hardware. The nail tabs are integral to the box, so it drives straight onto the stud with nails and nothing else, which is the reason nail-on is the standard rough-in choice on a production framing job. Set the box face out past the stud by the thickness of your finished drywall so the device and plate sit flush when the wall goes up.
8) What is the difference between the Centaur PSB344 and PSB368 3-gang boxes?
Both are 3-gang plastic nail-on boxes, and the difference is volume and shape. The PSB344 is the 44 cu in version at 2.5 x 3.7 x 7.6 inches; the PSB368 is the 68 cu in version at 4 x 3.75 x 4 inches. Same gang count, same plate, so if a 3-gang switch leg is carrying several cable runs through it, the 68 cu in PSB368 is the one to order.
9) How many Centaur plastic switch boxes come in a case?
Centaur plastic nail-on switch boxes are packed 30 to a carton, and the 3-gang and 4-gang capacities are sold as separate items, so a multi-unit job orders by gang and cubic capacity, not by mixed case. Thirty boxes covers a floor of switch legs on most residential rough-ins, so estimate your switch locations by gang count before you commit to how many cartons you need.
How fast can I get the Centaur PSB344 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Centaur PSB344 come with a warranty?
Absolutely. The Centaur PSB344 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Centaur PSB344?
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