The 1556EBK is a black flame-retardant ABS enclosure from the Hammond 1556 Series of modern general purpose enclosures, built in the 160 x 120 mm rectangular 1556 Series footprint in the 45 mm low-profile height. It is designed for mounting printed circuit boards, IoT equipment and other small electronics, and can sit on a desk or tabletop or be mounted on a wall, making it a practical choice for OEM engineers, integrators and electronics designers housing a small indoor device.
It measures 160 x 120 x 45 mm outside, with an inside length of 153.21 mm, inside width of 113.21 mm and inside height of 39.00 mm. It accepts a PC board up to 145 x 102 mm, giving the longest board area in this group while keeping a slim profile on a desk or wall.
The box and lid are molded from flame-retardant ABS (FRABS) rated UL94 V-0, finished in black with a light satin texture and shaped with rounded corners and face. Lap joint construction between lid and base protects against dust and splashing water, and the enclosure is designed to meet IP54. It is intended for indoor use; the series is not designed for outdoor use. Multiple mounting locations inside the lid and base accept #6 self-tapping PCB screws or an optional aluminum inner panel (1556EPL, sold separately).
Each 1556EBK ships with the box, lid, 4 cover screws and 4 rubber feet for tabletop use. The lid is secured with high strength #6 x 1/2" self-tapping Plastite screws; recommended cover screw torque is 71-85 ozf-in (50-60 cN-m) and PCB screw torque 42-56 ozf-in (30-40 cN-m). For wall installation, the black wall mount foot kit 1556FOOTBK-4 (pack of 4, sold separately) supports either a heavy duty wall flange mount or a flush keyhole-style wall mount, and the feet accept #8 self-tapping screws. Pole mount kits PMB6687KIT3 (7" max.) and PMB6687KIT4 (15" max.) are listed for this size. The part is RoHS and REACH compliant.
| Series | 1556 Series - Modern General Purpose Enclosures (Dual Wall-Mount or Desktop) |
| Description | FRABS DESKTOP/WALL MOUNT/IOT INDOOR ENCLOSURE |
| Part Number | 1556EBK |
| Mounting Options | Desktop/tabletop (rubber feet), heavy duty wall flange mount, or flush wall mount (keyhole) with wall mount foot kit |
| Short Description | FRABS WALL MOUNT/ IOT ENCL |
| Color Variants In This Size | 1556EGY, 1556EWH |
| Width | 4.72 in (120 mm) |
| Length | 6.30 in (160 mm) |
| Inside Width | 113.21 mm [4.46 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 | 102 mm |
| Max. P.C. Board Length | 145 mm |
| Size L X W X H (Part Page) | 4.72 in x 6.3 in x 1.77 in (120 mm x 160 mm x 45 mm) |
| Wall Mount Foot Kit | 1556FOOTBK-4 (FR ABS Black, pack of 4, with #8 x 3/8" self-tapping screws) |
| Aluminum Inner Panel | 1556EPL (sold separately) |
| Pole Mount Screw Type | #8 x 3/8" |
| Replacement Rubber Feet | 1421T6CL (clear, pack of 24) |
| Pole Mount Kit (7" Max.) | PMB6687KIT3 |
| Replacement Cover Screws | SC527-50 (steel, #6 x 1/2" self-tapping) |
| Pole Mount Kit (15" Max.) | PMB6687KIT4 |
| Replacement P.C. Board Screws | SC526-50 (steel, #6 x 1/4" self-tapping) |
| Pole Mount Replacement Screw Pack | SCPMB5-20 |
| Replacement Wall Mount Foot Screws | SC556-50 (stainless steel, #8 x 3/8" self-tapping) |
| UPC | 623980667140 |
| UNSPSC | 39121301 |
| CAD Models | Solid models available in .stp or .x_t |
| Drawing Revision | REV: 20.01.2023 |
| Factory Modification | Available (milling, drilling, printing); contact factory for quotes |
| In The Box | Box, lid, 4 cover screws and 4 rubber feet |
| Packaging Type | Shrink wrap |
| Shipping Weight | 0.36 lbs (0.16 kg) |
| Color | Black |
| Styling | Rounded corners and face |
| Texture | Light satin texture |
| Material | ABS Plastic (flame retardant ABS, FRABS) |
| Construction | Lap joint (protection against access of dust and splashing water) |
| PCB Mounting | Multiple mounting locations inside lid and base; accept #6 self-tapping screws |
| Lid Fastening | High strength #6 x 1/2" self-tapping Plastite screws |
| Wall Mount Foot Screw | Accepts #8 self-tapping screw |
| Recommended PCB Screw Torque | 42-56 ozf-in (30-40 cN-m) |
| Recommended Cover Screw Torque | 71-85 ozf-in (50-60 cN-m) |
| IP Rating | IP54 (designed to meet) |
| Environment | Indoor use; not designed for outdoor use |
| Flame Rating | UL94 V-0 |
| Chemical Resistance | Avoid acetone, ketones, ethers, aromatic and chlorinated hydrocarbons, thread locking compounds, cutting/tapping fluid, water detection and anti-seize paste, strong solvents or cleaners, and some greases and oils |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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The 1556EBK accepts a printed circuit board up to 145 mm long and 102 mm wide. Inside dimensions are 153.21 mm [6.03 in] long, 113.21 mm [4.46 in] wide and 39.00 mm [1.54 in] high.
It is designed to meet IP54, with lap joint construction that protects against dust and splashing water. It is for indoor use; the 1556 Series is 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.
Use the wall mount foot kit 1556FOOTBK-4 (black, pack of 4, sold separately). The feet support a heavy duty wall flange mount or a flush wall mount with keyhole slots, and accept #8 self-tapping screws.
The matching aluminum inner panel is 1556EPL, sold separately. It fits both the 45 mm and taller versions of this 160 x 120 mm footprint.
Flame-retardant ABS plastic rated UL94 V-0, in black with a light satin texture. It is RoHS and REACH compliant.
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