Siemens 6ES7407-0KR02-0AA0 PS 407 Power Supply | 10A, 120/230V AC, SIMATIC S7-400

Siemens 6ES7407-0KR02-0AA0 PS 407 Power Supply | 10A, 120/230V AC, SIMATIC S7-400

Siemens 6ES7407-0KR02-0AA0 power supply specifications. SIMATIC S7-400 PS 407, 10A, 120/230V AC input, 5V/12V/24V DC output.

Product Overview

The Siemens 6ES7407-0KR02-0AA0 is a PS 407 power supply module for the SIMATIC S7-400 programmable logic controller (PLC) system. It converts a wide-range AC input voltage (120/230 V AC) into the regulated DC voltages required by the S7-400 rack, backplane, and inserted modules. This unit provides a rated output current of 10A on the 5V DC bus and includes additional outputs for 24V DC and 12V DC auxiliary supplies.

Technical Specifications

Key Features

• Wide-Range AC Input:​ Automatic voltage selection (120/230 V AC) for global use

• High Output Capacity:​ 10A on 5V bus supports large S7-400 configurations

• Multiple Auxiliary Outputs:​ Provides 24V DC (1A) and 12V DC (1.5A) for external devices or interface modules

• Redundancy Capable:​ Can be used in redundant power supply configurations (requires additional hardware)

• Battery Backup Interface:​ Supports external battery unit for buffering the internal clock and retentive memory

• **​ Comprehensive Protection:​ Short-circuit and overvoltage protection

• **​ LED Status Indication:​ Visual confirmation of correct output voltage

• **​ Hot-Swap Capable:​ Can be replaced during operation (requires S7-400 rack with appropriate features)

Applications

• Primary power supply for SIMATIC S7-400 CPU racks (UR1/UR2/CR2 chassis)

• Powering expansion racks (ER1/ER2) via interface modules

• Supplying 24V DC auxiliaries for sensors or front connectors

• Industrial process control systems requiring high-availability power

• Critical infrastructure automation (power, water, transportation)

Important Notes

1. This power supply occupies two width slots (40 mm each) in a standard S7-400 rack.

2. For redundant power supply configurations, two PS 407 modules and a redundant coupling module (e.g., 6ES7407-0RA00-0AA0) are required.

3. A backup battery pack (e.g., 6ES7971-0BA00) must be ordered separately if memory buffering is required.

4. The auxiliary 24V DC output (1A) is isolated and can be used to power sensors or the S7-400 backplane in isolated mode.

5. Ensure total 5V current consumption of all modules in the rack does not exceed 10A.