The 6ES7153-2AA02-0XB0: The module occupies 40 mm width on the DIN rail, draws 550 mA from the 24 V DC interface supply, and presents a typical power loss of 5 W to the cabinet thermal budget. The 5 V backplane bus supplies up to 1 A to the downstream modules, so verify that total module draw stays under that limit before adding expansion.
Electrical characteristics and coordination
The I2t rating of 0.1 A²·s applies to the backplane power path – it defines the let-through energy for fuse or MCB selection upstream of the 24 V DC feed. In practice, the module itself draws a 2.5 A typical inrush and needs no external overvoltage protection on the supply lines, per Siemens recommendation. Isolation is tested at 500 V between the bus and the backplane. The RS-485 PROFIBUS connection uses a 9-pin sub-D socket with the bus termination typically done at the end device, not on the module itself.
Environmental limits and mounting
Operates over 0 to 60 °C ambient – sufficient for ventilated control cabinets but not for unheated enclosures. IP20 means no protection against water ingress; install inside a cabinet. Dimensions are 125 mm high by 40 mm wide by 117 mm deep; the 117 mm depth is the module body only – allow for connector protrusion by about 20 mm.