The 1557BBK is the low-profile, 80 mm square black member of the 1557 Series: a general purpose ABS enclosure measuring 3.15 in x 3.15 in x 1.77 in (80 mm x 80 mm x 45 mm). It is aimed at designers who need a compact, sealed housing for a small printed circuit board or wiring interface in an indoor setting.
Its rounded corners and face give a modern appearance, while the two piece tongue and groove lid and one piece high temperature UL listed silicone gasket protect against oil, dust and water; the ABS version is tested to and meets IP66. Four M4 stainless steel machine screws (M4-0.7 x 20 mm) thread into corrosion resistant bushings for repeated assembly, with a recommended torque of 71-85 ozf-in (50-60 cN-m).
The 1557BBK includes four rubber feet for tabletop use plus two wall mount feet and two #8 self-tapping foot screws, allowing a flush keyhole-style wall mount or a heavy duty wall flange mount. Install the feet at 80 - 90 cN-m (7 - 8 lbf-in) on ABS; #8 pan head wall screws are not included. The ABS version is not UL listed. It ships shrink wrapped at 0.25 lbs (0.11 kg).
| CAD Models | Solid models available in .stp or .x_t |
| Wall Fasteners | #8 pan head screws recommended (not included) |
| Wall Mount Feet | Accept #8 self-tapping screw |
| Factory Modification | Milling, drilling, printing etc. available from the factory ([email protected] for quotes) |
| Pole Mount Screw Type | #8 x 1/2" |
| Mounting Configurations | Desktop / tabletop (rubber feet), flush wall mount (mounting feet as keyhole slots), heavy duty wall flange mount (mounting feet outward) |
| Pole Mount Kit (7" Max) | PMB5057WKIT1 |
| Pole Mount Kit (15" Max) | PMB5057WKIT2 |
| Pole Mount Replacement Screw Pack | SCPMB4-20 |
| Wall Mount Foot Installation Torque | ABS 80 - 90 cN-m or 7 - 8 lbf-in |
| Type | Water-tight |
| Series | 1557 Series Type 4/4X, 6/6P Polycarbonate and ABS Plastic Enclosures |
| Long Description | BLACK GPABS plastic watertight enclosure |
| Enclosure Profile | 1557B |
| Short Description | ABS NEMA WALL MNT ENCL BK |
| Width | 3.15 in (80 mm) |
| Length | 3.15 in (80 mm) |
| Inside Width | 71.02 mm [2.80 in] |
| Total Height | 1.77 in (45 mm) |
| Inside Height | 38.80 mm [1.53 in] |
| Inside Length | 71.30 mm [2.81 in] |
| Size (L X W X H) | 3.15 in x 3.15 in x 1.77 in (80 mm x 80 mm x 45 mm) |
| Max. P.C. Board Width | 70.64 mm |
| Max. P.C. Board Length | 70.64 mm |
| UPC | 623980319155 |
| UNSPSC | 39121301 |
| Same-Size Variants | 1557BGY, 1557B2BK, 1557B2GY |
| Aluminum Inner Panel | 1557BPL |
| Replacement Gasket (2-Pack) | 1557BGASKET |
| Replacement Lid Screws (50-Pack) | SC576-50 |
| Wall Mount Foot Screws (50-Pack) | SC556-50 [#8 x 3/8" self tapping, stainless steel] |
| Replacement Rubber Feet (24-Pack) | 1421T6CL |
| PC Board Mounting Screws (50-Pack) | SC526-50 [#6 x 1/4" self tapping] |
| Replacement Wall Mount Foot Kit (24-Pack) | 1557FOOTBK-24 (black ABS), 1557FOOTGY-24 (gray ABS) |
| Included | Box, lid, 4 cover screws, preformed silicone gasket, 4 rubber feet, 2 wall mount foot screws and 2 wall mount feet |
| Packaging Type | shrink wrap |
| Shipping Weight | 0.25 lbs (0.11 kg) |
| Color | Black |
| Gasket | One piece, preformed, high temperature UL listed silicone |
| Material | ABS Plastic (general purpose) |
| Lid Screws | Included M4 stainless steel machine screws [M4-0.7 x 20 mm] threaded into corrosion resistant bushings |
| Lid Inserts | M4-0.7 |
| Corner Styling | Rounded corners and face |
| Lid Construction | Gasketed lid with two piece tongue and groove construction |
| PCB Mounting Bosses | Accept #6 self-tapping screw |
| Recommended Cover Screw Torque | 71-85 ozf-in (50-60 cN-m) |
| IP Rating | IP66 |
| Intended Use | Indoor use |
| Impact Rating | IK07 per IEC 62262:2021 |
| Chemical Caution | Avoid acetone, ketones, ethers, aromatic and chlorinated hydrocarbons, thread locking compounds, cutting/tapping fluid, water detection paste, anti-seize paste, strong solvents or cleaners, and some greases and oils |
| Recommended Operating Temperature | -20°C to +60°C (-4°F to +140°F) |
| UL File # | E65324 |
| UL Listing | General purpose ABS version is not UL listed / not UL approved (tested to and meets IP66) |
| Flame Rating | UL94 HB |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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It measures 3.15 in x 3.15 in x 1.77 in (80 mm x 80 mm x 45 mm) outside, with inside dimensions of 71.30 mm x 71.02 mm x 38.80 mm [2.81 x 2.80 x 1.53 in].
The maximum PC board is 70.64 mm long by 70.64 mm wide. The bosses accept #6 self-tapping screws (SC526-50, #6 x 1/4 in, 50-pack).
No. The general purpose ABS version is not UL listed; it is tested to and meets IP66 and uses UL94 HB material. The polycarbonate 1557B2BK is the UL listed alternative.
On a tabletop with the included rubber feet, or on a wall using the two included wall mount feet either as keyhole slots for a flush mount or turned outward for a heavy duty flange mount. Pole mount kits PMB5057WKIT1 and PMB5057WKIT2 are also listed for the 1557B profile.
The drawing recommends 71-85 ozf-in (50-60 cN-m) for the cover screws.
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