UR2 Rack — 9 Slots for S7-400 Chassis
The 6ES7400-1JA11-0AA0 is the SIMATIC S7-400 UR2 rack — an aluminum backplane with 9 slots for central or distributed I/O configurations. It accepts two redundant power supplies (PS) in the leftmost slots, leaving seven slots for CPU, CP, and I/O modules. Rated for 0 °C to 70 °C ambient, this rack handles the heat inside a crowded enclosure without forced cooling.
Carries CE, UKCA, UL, FM, KC, EAC, RCM, and CCC approvals — covers installations in Europe, North America, South Korea, Russia, Australia, and China without additional certification paperwork.