6ES7307-1KA02-0AA0

Product information

The 6ES7307-1KA02-0AA0 is a Siemens SIMATIC S7-300 regulated load power supply, PS307, with 120/230 V AC input and a controlled, isolated 24 V / 10 A DC output. Input ranges are selected automatically: 85–132 V and 170–264 V.

A regulated supply of this class is what feeds the 24 V DC load circuits of an S7-300 installation — sensors, valve islands, interface relays and the modules themselves — from a mains input. Its output is controlled and isolated, with 20 ms of buffering at rated output current on mains failure.

Technical specifications

Manufacturer / family	Siemens · SIMATIC S7-300
Product type	PS307, 24 V / 10 A
Input	1-phase AC, automatic range selection
Input voltage 1	85 … 132 V AC
Input voltage 2	170 … 264 V AC
Line frequency	50 / 60 Hz (47 … 63 Hz)
Output	Controlled, isolated DC voltage, 24 V / 10 A
Input current	4.2 A at 120 V · 1.9 A at 230 V
Buffering time at rated output current	Minimum 20 ms on power failure
Overvoltage capability	2.3 × rated input voltage, 1.3 ms
Inrush current limitation	Max. 55 A at 25 °C, limited for max. 3 ms
Net weight	0.8 kg

Specifications as published in Siemens product data for this article number. Verify against the nameplate of the unit offered to you.

Where a load power supply fits

In an S7-300 installation this supply provides the 24 V DC load and module voltage. It is a different function from the S7-1500 system power supply (PS 25W, 6ES7505-0KA00-0AB0), which feeds a backplane bus rather than a field load circuit — the two are not interchangeable.

Typical applications

• Supplying 24 V DC load circuits in S7-300 control cabinets
• Feeding sensors, valve islands and interface relays from a regulated, isolated output
• Installations where a 10 A supply is required from a 120 V or 230 V AC single-phase input
• Replacement of a failed supply of the same type and rating

Application examples describe typical uses of this product type. Suitability for your own installation must be confirmed against your engineering documentation. Adequate external fuse protection and protective measures must be verified by the installer.

Related references

• 6ES7505-0KA00-0AB0 — S7-1500 system power supply PS 25W 24 V DC
• 6ES7315-2AH14-0AB0 — S7-300 CPU 315-2 DP with integrated 24 V DC supply
• 6ES7317-2EK14-0AB0 — S7-300 CPU 317-2 PN/DP

Before you order

To confirm a specific unit, please provide the complete ordering code, a nameplate photograph, the quantity required and the delivery destination. Availability, condition, quantity, lead time and commercial terms are confirmed individually after inquiry.

Frequently asked questions

Does it switch input voltage automatically?
Yes. Siemens lists automatic range selection, with input ranges of 85–132 V and 170–264 V AC.

What is the output rating?
A controlled, isolated 24 V DC output at 10 A.

How long does it hold up on mains failure?
Minimum 20 ms at rated output current.

Is this the same as the S7-1500 system power supply?
No. This is an S7-300 load power supply. The S7-1500 PS 25W feeds a backplane bus and has a different function and ordering code.

What is the price and lead time?
Confirmed individually against current availability for the specific revision and quantity.