The Siemens 6ES7407-0KA02-0AA0 is a mid-range PS 407 universal-input power supply for the SIMATIC S7-400 PLC platform. Accepting both 120/230 V AC and DC input, it delivers 10 A at 5 V DC and 1 A at 24 V DC to the backplane bus for medium to large configurations of CPU, communication, and I/O modules.

Key Features

• Universal input: 120/230 V AC (85–264 V, 47–63 Hz) or 120/230 V DC (88–300 V) — one supply for global mains standards
• Delivers 10 A at 5 V DC for backplane bus and 1 A at 24 V DC for auxiliary circuits
• Occupies two slots at 50 mm wide — balances power capacity with rack density
• 20 ms mains buffering bridges short power interruptions without CPU reset
• Galvanic isolation between primary and secondary sides for signal integrity
• Short-circuit-proof and idling-proof 24 V output
• Supports optional backup battery (1× or 2× lithium AA, 3.6 V) for CPU data retention
• ATEX, IECEx, CE, UL, and UKCA certified for global deployment

Technical Data

Applications

The PS 407 10 A variant powers medium to large S7-400 configurations in standard factory automation environments where 120/230 V mains is available. Typical installations include production line controllers with multiple I/O racks, process skids, and machine control systems. For redundant operation requirements, the 6ES7407-0KR02 provides the same 10 A rating with dual-redundant fail-safe support.