The 6ES7972-0CA00-0XA0 is a Siemens SIMATIC S7 connector power supply unit set, designed to provide external 24V DC power to the PC adapter USB from a 100-240V AC mains source. It's a spare part for S7 systems where the programming adapter needs a dedicated, isolated supply rather than drawing from the PLC backplane or a shared bus.
6ES7972-0CA00-0XA0 SIMATIC S7 Connector Power Supply, Mature
MPN6ES7972-0CA00-0XA0
Siemens SIMATIC S7, Connector power supply unit set for external power supply of the PC adapter USB, 100V-240V AC/24V DC, spare part, mature lifecycle.
$66.19Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Product details
Frequently asked questions
What does the 6ES7972-0CA00-0XA0 do?
It's a spare part connector power supply unit set for the SIMATIC S7 PC adapter USB. It takes 100-240V AC input and provides 24V DC output to power the adapter externally, keeping the programming connection isolated from the PLC's internal supply.
What is the input voltage range for this power supply?
It accepts 100V to 240V AC, which covers standard mains voltages worldwide without needing a voltage selector switch.
MPN
6ES7972-0CA00-0XA0