SIPLUS S7-400 UR2-H rack, 18 slots, conformal coated
This is the 6AG1400-2JA10-4AA0, a SIPLUS S7-400 UR2-H Alu rack that accepts 18 single-width modules across two 9-slot segments. It is a spare part for medial-exposure environments, built with conformal coating on the base assembly 6ES7400-2JA10-0AA0. The rack carries the P bus and communication bus across all slots, so you can populate it with any mix of S7-400 power supplies, CPUs, and I/O modules that use the backplane buses.
Width is 482.5 mm (19-inch rack compatible), height 290 mm, depth only 27.5 mm — it slides into a standard 19-inch cabinet opening and leaves the rest of the enclosure depth for module wiring and airflow. Rated for 0 °C to 60 °C ambient at sea level, with derated ceilings at altitude: above 2 000 m the max allowable temperature drops 10 K per atmospheric pressure step, down to 40 °C at 5 000 m. The barometric pressure-altitude table in the spec covers the full range from -1 000 m to +5 000 m.
The conformal coating on this variant is the key differentiator from the standard 6ES7400-2JA10-0AA0 — it protects the PCB against condensation, corrosive gases, and particulate ingress in medial or harsh-environment installations.