Thomas & Betts CIFDC FS Device Connection Box

No. The CIFDC is the box body only, and it ships without screws as well. You order the FS cover separately to suit the device going in it, a single receptacle plate, duplex plate, toggle switch plate, or a blank. Budget for the cover and its screws on the same order so the opening is not left open on the job.

The CIFDC has 22.5 cubic inches of volume, so box fill is calculated against that figure rather than a fixed conductor count. Deduct for the device, clamps if present, and grounds the usual way, then divide the remainder by the volume allowance for your wire size. 22.5 cubic inches is generous for a single gang FS box, which is why these get used where a switch or receptacle plus a couple of splices has to share the enclosure.

The Kraloy FSED050710 is a PVC 1-gang deep FSE gang box, so it is the nonmetallic option when the run is PVC conduit solvent-welded throughout. The Thomas & Betts CIFDC is a rectangular device connection box with two threaded inlets, offered in 1/2 inch and 3/4 inch hub sizes, and it is the choice where the feed is threaded conduit. Pick by what the conduit system is: threaded hubs on the CIFDC, solvent-weld PVC on the Kraloy FSE.

Yes, it is a device connection box, and switching equipment mounts by screwing into the box bosses. That is the difference between an FS box like this and a plain junction box: the device lands in the box and the cover plate closes over it, so no separate device ring or plaster ring is needed.

Feed comes in through the two hubs, not the back. The box has no rear inlet, so plan the conduit run to approach from the sides. If your layout requires a back feed you need a different box style.

It is classified under weatherproof boxes and the FS form factor is the standard choice for exposed exterior and damp industrial work. The weather integrity depends on the cover you pair with it: the box itself is not sealable and has no gasket arrangement of its own, so for a wet location you need a gasketed weatherproof FS cover rather than a plain flat plate.

Both are single gang FS style device boxes, but they belong to different raceway systems. The CIFDC is a threaded hub box sized for 1/2 or 3/4 inch conduit and takes the device by screwing it in. The Kraloy FSED050710 is a PVC 1-gang deep box from the FSE series, which is what you use when the run is PVC and the joints are solvent welded. Do not mix the two systems at a single box without the right transition fitting.

They are related but not interchangeable. The Thomas & Betts CIFDC is an FS/FD type device connection box, rectangular, with two inlets and 22.5 cubic inches of capacity, and devices mount to it by screwing. The Kraloy FSED050710 is an FSE series box, the PVC deep gang body. If a drawing calls out FS specifically for a threaded conduit system, the CIFDC is the match; an FSE body belongs to the PVC family and should not be substituted into a threaded run.

Yes, it is classified as a box for built-in mounting in a wall or ceiling, though FS boxes are most often run surface mounted on masonry, strut, or structure with the conduit exposed. Either way, allow for the 66.675 mm depth in the cavity or standoff.

Plan on ordering the cover and hardware as separate line items with the Thomas & Betts CIFDC - it ships without screws, and cover attachment hardware is not part of the box itself, though FS covers are the matching family. The Kraloy FSED050710 is likewise supplied as the FSE box body. For either one, add the device or blank cover and its gasket to the same order so the opening gets closed out on the first trip.