The 6SL3520-1XC03-0AB0 is the Standard I/O variant of 1XC03 — 3 kW FSB fanless C-connector SINAMICS G115D for SIMATIC control systems. It delivers 7.7 A HO (15.4 A LO) in the fanless FSB enclosure (425 × 180 × 134 mm, 7.12 kg) with natural convection cooling. AB0 provides terminal-based Standard I/O control, joining AF0 (PROFINET) as the second confirmed communication variant at 1XC03. 3 kW FSB fanless is the highest G115D rating without a cooling fan — important for noise-sensitive and low-maintenance installations. Operates at 380–480 V three-phase, compatible with IE2/IE3/IE4 motors across 0–550 Hz, IP65 sealed.

1XC03: three communication interfaces at the highest fanless G115D

1XC03 is now confirmed with all three G115D communication variants — AA0 (I/O Control), AF0 (PROFINET with PROFIsafe), and AB0 (Standard I/O). All three share the same 7.7 A HO 3 kW FSB fanless hardware with C-connector. For a SIMATIC-controlled machine where every drive node is networked, AF0 provides coordinated multi-drive control and safety over PROFINET. For retrofit or standalone applications, AA0 and AB0 offer terminal-based alternatives — same C-connector, same fanless FSB enclosure, different control wiring.