Siemens 6ES59517LB14 Power Supply

Siemens 6ES59517LB14 is a SIMATIC S5 power supply that delivers 24 V DC at up to 2 A, providing the essential 24 V rail for older S5 controllers and their peripheral circuits. This replacement unit is designed for classic Siemens S5 installations and carries the 6ES59517LB14 designation, identifying it as a dedicated 24 VDC supply within the Siemens S5 ecosystem. The output is specified as 24 V DC with a maximum current of 2 A, equating to a theoretical maximum power of 48 W to feed the PLC logic and connected modules. Because SIMATIC S5 systems rely on a stable 24 V supply for both controller logic and I/O devices, this unit serves as a practical spare or replacement in repair or retrofit projects involving legacy Siemens equipment.