The 1550WCBK is a black watertight diecast aluminum enclosure from the 1550 Series, measuring 4.53 in (115 mm) x 3.54 in (90 mm) x 2.17 in (55 mm) including the lid. It is supplied with an IP66 EVA foam gasket and is rated IP66, making it a practical housing for electronics builders, OEM engineers and integrators whose circuits face dust and water.

The 1550C size gives a wider 115 x 90 mm footprint with 55 mm of overall height, leaving room for connectors on the walls and a board stacked above the floor. Per the drawing, the inside box measures 108.85 mm [4.29 in] long by 83.85 mm [3.30 in] wide with 51.80 mm [2.04 in] of inside height, and the box stands 51.00 mm [2.01 in] tall without the 4 mm lid.

The rugged die-cast alloy is tough yet easy to machine. It is finished in tough satin black polyester powder paint that lasts even after machining, and black lid screws are included for a matched assembled appearance. Walls have no internal ribs, so connectors fit without interference or extra milling, and the low side wall draft angle (2° less) makes PC board mounting easier. The lid is secured by M3.5 x 0.6 x 12 mm stainless steel Phillips head screws into factory tapped holes.

The EVA foam gasket ships loose inside the enclosure and is rated up to 65°C (149°F); installed properly with the lid screws torqued at 55 cN.m the 1550WCBK is designed to meet IP66. Spares are 1550CEGASKET (IP66) and the silicone IP67 upgrade is 1550CSGASKET. The same size without a gasket is 1550C (natural) or 1550CBK (black).

RoHS and REACH compliant, shipped in shrink wrap at 0.49 lbs (0.22 kg). UPC 623980057569, UNSPSC 39121301. Solid models are available in .stp or .x_t, and the enclosure can be factory modified (milling, drilling, printing).