What it is
The 6ES7400-1JA01-0AA0: This is the SIMATIC S7-400 UR2 rack — a 9-slot passive backplane for central or distributed I/O configurations, with dual slots for redundant power supplies. Measures 257.5 mm wide by 290 mm tall by 27.5 mm deep, so it fits in shallow cabinets. P bus and communication bus are integrated; no separate backplane module needed. Temperature range is 0 to 70 °C.
Approvals and compliance
Holds UL, CE, UKCA, FM, KC, EAC, RCM, and CCC marks — covers North America, Europe, South Korea, Russia, Australia, and China. No additional certification project needed for those regions.
Mounting and layout
Measures 257.5 mm wide by 290 mm tall by 27.5 mm deep. 9 slots; two power-supply slots available.