The 1590B3 is a 116 x 77 x 38 mm diecast aluminum enclosure in natural finish with no mounting flanges. Wider than the 1590B2, it gives OEM engineers, technicians and integrators more board area in a rugged, easily machined instrument housing.

Box and lid are made from diecast aluminum alloy, tough yet easy to machine. The unpainted version is vibra finished for a smooth surface with no sharp edges, and lap joint construction where lid and box meet protects against access of dust and splashing water. The standard 1590B3 is designed to meet IP54.

The part page lists 4.57 in x 3.03 in x 1.48 in (116 mm x 77 mm x 38 mm), and the series table gives a nominal height of 1.50 in (38 mm). The drawing shows 116.00 x 77.00 x 37.50 mm [4.567 x 3.031 x 1.476 in] outside and 110.67 x 71.67 x 33.50 mm [4.357 x 2.822 x 1.319 in] inside. Maximum PC board values are listed as 69.67 mm and 108.67 mm, and the side wall draft angle of 2° or less makes board mounting easier.

The assembly includes box, lid and 4 cover screws in factory-tapped 6-32 UNC holes, with a recommended torque of 50-55 cN.m [71-78 ozf.in]. For a water-tight build choose 1590WB3, or add the 1590B3GASKET kit. Factory modification (milling, drilling, printing) and STEP or IGES solid models are available.