The 1557B2GY is a RAL7035 light gray polycarbonate enclosure in the smallest 1557 size, 80 x 80 x 45 mm. It serves OEM engineers, electricians and integrators who need a small water-tight housing for a circuit board or sensor electronics, indoors or outdoors.
The box measures 3.15 in (80 mm) square with a total height of 1.77 in (45 mm). Inside, the drawing gives 71.30 mm [2.81 in] of length, 71.02 mm [2.80 in] of width and 38.80 mm [1.53 in] of height, and the maximum P.C. board is 70.64 x 70.64 mm. Bosses accept #6 self-tapping screws such as SC526-50, and the 1557BPL aluminum inner panel is available as an accessory.
Its lid is gasketed with a one piece high temperature UL listed silicone gasket in a two piece tongue and groove joint that protects against oil, dust and water. M4 stainless steel machine screws thread into corrosion resistant inserts, so the lid can be removed and refitted repeatedly. The part is rated IP68 and NEMA 4, 4X, 6, 6P, 12 and 13, is cUL and UL 508A listed (file E65324), and polycarbonate versions are UV stabilized, IK08 impact rated per IEC 62262:2021 and recommended for -40°C to +110°C (-40°F to +230°F).
The 1557B2GY ships with box, lid, 4 cover screws, the preformed silicone gasket, 4 rubber feet, 2 wall mount feet and 2 wall mount foot screws. Mount it on a tabletop, as a heavy duty flange wall mount, or flush using the feet as keyhole slots; PMB5057WKIT1 and PMB5057WKIT2 pole mount kits are listed for poles up to 7" and 15".
| Mounting Options | Desktop/tabletop (rubber feet); heavy duty wall flange mount (mounting feet outward); flush wall mount (mounting feet as keyhole slots) |
| Wall Mounting Screws | #8 pan head screws (not included) |
| Pole Mount Screw Type | #8 x 1/2" |
| Pole Mount Kit (7" Max) | PMB5057WKIT1 |
| Pole Mount Kit (15" Max) | PMB5057WKIT2 |
| Pole Mount Replacement Screw Pack | SCPMB4-20 |
| Wall Mount Foot Installation Torque | Polycarbonate 100-110 cN-m or 8.8-9.7 lbf-in |
| Type | Water-tight |
| Color | Light Gray (RAL7035 grey) |
| Series | 1557 Series Type 4/4X, 6/6P Polycarbonate and ABS Plastic Enclosures (Water-Tight, Multiple Mounting Features) |
| Description | RAL7035 grey PC plastic watertight enclosure |
| Part Number | 1557B2GY |
| Enclosure Profile | 1557B |
| Short Description | PC NEMA WALL MNT ENCL GY |
| 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 |
| Same-Size Variants | 1557BBK (Black ABS), 1557BGY (Light Gray ABS), 1557B2BK (Black Polycarbonate), 1557B2GY (Light Gray Polycarbonate) |
| Aluminum Inner Panel | 1557BPL |
| Replacement Lid Screws | SC576-50 stainless steel, M4-0.7 x 20mm (Pkg 50) |
| Wall Mount Foot Screws | SC556-50 stainless steel, #8 x 3/8" self tapping (Pkg 50) |
| Replacement Rubber Feet | 1421T6CL (clear, Pkg 24) |
| P.C. Board Mounting Screws | SC526-50 steel, #6 x 1/4" self tapping (Pkg 50) |
| Replacement Gasket (2-Pack) | 1557BGASKET (silicone pre-formed, black) |
| Replacement Wall Mount Foot Kits (24-Pack) | 1557FOOT2BK-24 (Black Polycarbonate), 1557FOOT2GY-24 (Gray Polycarbonate) |
| UPC | 623980987491 |
| UNSPSC | 39121301 |
| Drawing Revision | REV: 13.02.2020 |
| Solid Models | .stp or .x_t |
| Factory Modification | Milling, drilling, printing etc. available from the factory |
| 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 | 0.28 lbs (0.13 kg) |
| Gasket | One piece preformed gasket of high temperature UL listed silicone |
| Styling | Rounded corners and face |
| Material | Polycarbonate (UL listed) |
| Lid Screws | M4 stainless steel machine screws threaded into corrosion resistant M4-0.7 inserts/bushings |
| Lid Construction | Gasketed lid with two piece tongue and groove construction (protection against oil, dust and water) |
| PC Board Mounting | Bosses accept #6 self-tapping screws |
| Outer Wall Mount Option | Accepts #8 self-tapping screw |
| Recommended Cover Screw Torque | 71-85 ozf-in (50-60 cN-m) |
| IP Rating | IP68 (series: independently tested to meet IP66, IP67 and IP68) |
| NEMA Rating | 4, 4X, 6, 6P, 12 & 13 |
| Flame Rating | UL94 V-0 |
| Impact Rating | IK08 per IEC 62262:2021 |
| UV Resistance | UV stabilized for outdoor use |
| Chemical Resistance | 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 | -40°C to +110°C (-40°F to +230°F) |
| Material Flammability (Spec Sheet/Drawing) | UL94-5VA (drawing: UL94 - 5VA @ 3mm) |
| UL File # | E65324 |
| UL Listing | cUL and UL 508A listed (cULus Listed, Type 4, 4X, 6, 6P marking on drawing) |
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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It is light gray, described by the manufacturer as RAL7035 grey polycarbonate.
IP68 and NEMA 4, 4X, 6, 6P, 12 and 13. Polycarbonate versions are cUL and UL 508A listed under file E65324 and carry an IK08 impact rating per IEC 62262:2021.
The drawing shows 71.30 mm [2.81 in] long, 71.02 mm [2.80 in] wide and 38.80 mm [1.53 in] high inside.
Yes. The replacement silicone pre-formed gasket for the 1557B size is 1557BGASKET, sold as a 2-pack.
For the 1557B profile the series lists PMB5057WKIT1 (7" max) and PMB5057WKIT2 (15" max), using #8 x 1/2" screws (replacement pack SCPMB4-20).
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