The 1556FBK is a square black flame retardant ABS enclosure from the 1556 Series with a 160 x 160 mm (6.30 x 6.30 in) footprint and a 45 mm (1.77 in) total height. The low-profile F size suits flat printed circuit board assemblies, IoT gateways and small controllers that need a compact housing for a desk, shelf or wall.
The box and lid are molded from flame retardant ABS plastic with a light satin texture, carrying a UL94 V-0 flammability rating. Rounded corners and face give a modern look, while lap joint construction protects against dust and splashing water; the enclosure is designed to meet IP54 and is for indoor use only.
The drawing shows inside dimensions of 153.21 x 153.21 mm (6.03 x 6.03 in) with 39.00 mm (1.54 in) of inside height. Maximum PC board size is 142 x 142 mm, and boards can be screwed to the mounting locations in the lid and base or fitted on the optional 1556FPL aluminum inner panel.
The purchased assembly includes the box, lid, 4 cover screws and 4 rubber feet, so it is ready for tabletop use out of the box. For walls, the 1556FOOTBK-4 black mounting foot kit (sold separately) supports a heavy duty wall flange mount or a flush keyhole-style mount. Recommended cover screw torque is 71-85 ozf-in (50-60 cN-m) and PCB screw torque is 42-56 ozf-in (30-40 cN-m). Pole mount kits PMB6687KIT3 (7 in max.) and PMB6687KIT4 (15 in max.) are listed for this size.
It is REACH and RoHS compliant, ships in shrink wrap, and can be factory modified with milling, drilling or printing. Some chemicals can damage or weaken ABS, so check compatibility before using solvents, thread lockers or cutting fluids.
| Mounting Options | Desktop/tabletop (rubber feet), heavy duty wall flange mount, flush wall mount (keyhole) |
| Pole Mount Screw Type | #8 x 3/8" |
| Pole Mount Kit (7" Max.) | PMB6687KIT3 |
| Pole Mount Kit (15" Max.) | PMB6687KIT4 |
| Wall Mount Foot Attachment | Accepts #8 self-tapping screw |
| Pole Mount Replacement Screw Pack | SCPMB5-20 |
| Wall Mount Foot Kit (Sold Separately) | 1556FOOTBK-4 (Black, pack of 4, #8 x 3/8" self-tapping screws included) |
| Color | Black |
| Series | 1556 Series Modern General Purpose Enclosures |
| Description | FRABS Desktop/Wall Mount/IoT Indoor Enclosure |
| Enclosure Size | 1556F |
| Short Description | FRABS Wall Mount/ IoT Encl |
| Width | 6.30 in (160 mm) |
| Length | 6.30 in (160 mm) |
| Inside Width | 153.21 mm [6.03 in] |
| Total Height | 1.77 in (45 mm) |
| Inside Height | 39.00 mm [1.54 in] |
| Inside Length | 153.21 mm [6.03 in] |
| Max. P.C. Board Width | 142 mm |
| Max. P.C. Board Length | 142 mm |
| Size (L X W X H, Part Page) | 6.3 in x 6.3 in x 1.77 in (160 mm x 160 mm x 45 mm) |
| Aluminum Inner Panel | 1556FPL |
| Color-Matched Enclosures | 1556FGY, 1556FWH |
| Clear Rubber Feet (Pkg 24) | 1421T6CL |
| Steel Cover Screws #6 X 1/2" Self Tapping (Pkg 50) | SC527-50 |
| Steel P.C. Board Screws #6 X 1/4" Self Tapping (Pkg 50) | SC526-50 |
| Stainless Steel Wall Mount Foot Screws #8 X 3/8" Self Tapping (Pkg 50) | SC556-50 |
| UPC | 623980667201 |
| UNSPSC | 39121301 |
| Part Number | 1556FBK |
| Drawing Revision | REV: 20.01.2023 |
| Included | Box, lid, 4 cover screws, 4 rubber feet |
| Packaging Type | Shrink wrap |
| Shipping Weight | 0.46 lbs (0.21 kg) |
| Texture | Light satin texture |
| Material | ABS Plastic (flame retardant ABS, FRABS) |
| CAD Models | Solid models available in .stp or .x_t |
| Construction | Lap joint lid; rounded corners and face |
| Lid Fastening | #6 x 1/2" self-tapping Plastite screws |
| PC Board Mounting | Multiple mounting locations inside lid and base; accepts #6 self-tapping screws |
| Factory Modification | Milling, drilling, printing available |
| Recommended PCB Screw Torque | 42-56 ozf-in (30-40 cN-m) |
| Recommended Cover Screw Torque | 71-85 ozf-in (50-60 cN-m) |
| Use | Indoor use only; not designed for outdoor use |
| IP Rating | IP54 (designed to meet) |
| Flame Rating | UL94 V-0 |
| Chemical Resistance | Avoid acetone, ketones, ethers, aromatic and chlorinated hydrocarbons, thread-locking compounds, cutting/tapping fluid, water detection paste, anti-seize paste, strong solvents, and incompatible greases/oils |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Outside it measures 160 x 160 x 45 mm (6.30 x 6.30 x 1.77 in) L x W x total height. The drawing gives inside dimensions of 153.21 mm [6.03 in] long, 153.21 mm [6.03 in] wide and 39.00 mm [1.54 in] high.
The part page lists a maximum P.C. board length of 142 mm and width of 142 mm. Boards mount to locations in the lid and base, or to the 1556FPL aluminum inner panel sold separately.
Yes. Using the 1556FOOTBK-4 wall mount foot kit (sold separately, pack of 4 with #8 x 3/8" self-tapping screws) it can be mounted with a heavy duty wall flange or flush keyhole-style. For desktop use, the 4 included rubber feet are used.
No. It is designed to meet IP54 against dust and splashing water, but the 1556 Series is for indoor use and not designed for outdoor use.
The purchased assembly includes the box, lid, 4 cover screws and 4 rubber feet. The lid is secured with #6 x 1/2" self-tapping Plastite screws.
It is molded from black flame retardant ABS plastic with a light satin texture, carrying a UL94 V-0 flammability rating. It is also RoHS and REACH compliant.
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