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          Apter Power provides 6ES7407-0KR02-0AA0 quotations, manuals, load review, and exact-supply matching.

        6ES7407-0KR02-0AA0

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        The Siemens 6ES7407-0KR02-0AA0 PS407 is a redundant SIMATIC S7-400 rack power supply that converts AC or DC input into the 5 V and 24 V power used by rack modules.
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        Ships by Wednesday, October 28
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
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        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
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        Technical specifications for 6ES7407-0KR02-0AA0

        • Manufacturer:
          Siemens
        • Part Number:
          6ES7407-0KR02-0AA0
        • Product Family:
          Siemens Simatic S7-400
        • Product Type:
          PS407 Redundant Rack Power Supply
        • Stock:
          1
        • DC Input Range:
          88 to 300 V DC
        • AC Input Range:
          85 to 264 V AC
        • Input Frequency:
          47 to 63 Hz
        • Mains Buffering Time:
          20 ms
        • 5 V Output Current:
          10 A
        • 24 V Output Current:
          1 A
        • Rated Input Power:
          95 W
        • Power Loss:
          20 W
        • Maximum Inrush Current:
          63 A
        • Input Current at 120 V DC:
          1 A
        • Input Current at 230 V DC:
          0.5 A
        • Input Current at 120 V AC:
          0.9 A
        • Input Current at 230 V AC:
          0.5 A
        • Output Short-Circuit Protection:
          Yes
        • Rack Width:
          2 slots
        • Primary-to-Secondary Isolation:
          Yes
        • Protection Class:
          Class I with protective conductor
        • Supply Cable:
          3 x 1.5 mm²
        • Weight:
          2.8748 lbs (1.304 kg)
        • Estimated shipping dimensions:
          23.3x29.5x6.3cm
        • Tariff Code:
          85044095
        • Country of origin:
          Germany
        • Place of shipment:
          Xiamen,Fujian,China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Input Conversion Rack Outputs Redundant Supply Backup and Status

        Features:

        • Wide-range AC or DC input feeds an S7-400 rack through the PS407 conversion stage.
        • Separate 5 V and 24 V rails serve controller electronics and assigned rack functions.
        • Redundant operation and backup batteries address different continuity requirements.
        Input conversion supplies both rack rails from one isolated mains connection.

        A redundant companion supply maintains the rack power path when one input side is unavailable.

        Battery, load, output protection, and LED status are checked as separate conditions.

        The Siemens 6ES7407-0KR02-0AA0 S7-400 PS407 Redundant Power Supply may remain available for quotation and support beyond End-Of-Life (EOL) by the manufacturer (OEM).
        Siemens 6ES7407-0KR02-0AA0 S7-400 PS407 Redundant Power Supply Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

        Converting the external supply for the rack

        • AC range: The mains circuit can enter through the documented wide AC range.
        • DC range: A suitable high-voltage DC source can feed the same input stage.
        • Protective earth: The class-I connection bonds the supply chassis to the protective conductor.
        • Isolation: The conversion stage separates incoming mains from the rack output rails.

        Allocating current between the two supply rails

        • 5 V rail: Processor and rack electronics draw from the 10 A output budget.
        • 24 V rail: Assigned rack functions draw from the separate 1 A output.
        • Load calculation: Every installed module contributes to the applicable rail total.
        • Short circuit: Output protection responds when a connected rail exceeds its allowed condition.

        Maintaining power through two coordinated sources

        • Parallel path: Two compatible supplies feed the redundant rack arrangement.
        • Input independence: Each unit requires its own correctly protected incoming circuit.
        • Failure response: The remaining source carries the permitted rack load after one supply drops out.
        • Capacity check: Redundancy is valid only when either supply can support the required load.

        Separating short interruptions from retained-memory support

        • Mains buffer: Stored energy bridges a documented 20 ms input interruption.
        • Battery function: Installed lithium cells support the assigned S7-400 backup circuit.
        • Front LEDs: Input, output, battery, and fault indications narrow the affected section.
        • Service check: Battery condition, rail voltage, and rack diagnostics are confirmed independently.
        Description
        Siemens 6ES7407-0KR02-0AA0 is the redundant PS407 power supply for a SIMATIC S7-400 rack. It accepts a wide AC or DC input range and supplies the 5 V and 24 V rails used by the rack modules.

        Inside the S7-400 rack, 6ES7407-0KR02-0AA0 converts the incoming mains circuit into up to 10 A on the 5 V rail and 1 A on the 24 V rail. These outputs feed different rack loads, so the complete module current demand must be checked against both rails rather than against one combined wattage.

        A 20 ms mains buffer allows 6ES7407-0KR02-0AA0 to ride through a short input interruption, while the redundant arrangement permits a second supply to share the rack power path. Correct protective-earth wiring and primary-to-secondary isolation keep the mains side separate from the controller electronics.

        Two lithium backup batteries can be fitted to 6ES7407-0KR02-0AA0 for the S7-400 backup functions assigned to the supply. Front indication, output protection, and the rack diagnostic path should be checked together so an input failure is not mistaken for an overloaded or shorted output.
        Alternative Names
        6ES74070KR020AA0 6ES7 407-0KR02-0AA0 6ES7407 0KR02 0AA0 Siemens 6ES7407-0KR02-0AA0 6ES7407-0KR02-0AA0 PS407 PS407 6ES7407-0KR02-0AA0 6ES 7407 0KR02 0AA0 6ES7407/0KR02/0AA0
        Technical notes
        Match the mains selector, protective conductor, rack redundancy arrangement, backup batteries, and load budget before energizing Siemens 6ES7407-0KR02-0AA0.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        What should be calculated before adding modules behind Siemens 6ES7407-0KR02-0AA0?
        Add the 5 V and 24 V demands separately for every S7-400 module, then confirm Siemens 6ES7407-0KR02-0AA0 stays within both output-current limits.
        Can 6ES7407-0KR02-0AA0 use either AC or DC at its input?
        Yes. 6ES7407-0KR02-0AA0 accepts the documented wide AC or DC range, but the wiring, upstream protection, and protective conductor must match the chosen source.
        Why does Siemens 6ES7407-0KR02-0AA0 still report a battery fault after mains power returns?
        The batteries on Siemens 6ES7407-0KR02-0AA0 serve the backup circuit separately from the mains input, so inspect cell type, polarity, voltage, holder contacts, and battery monitoring.
        Does a redundant pair of 6ES7407-0KR02-0AA0 double the usable rack load?
        No. A redundant 6ES7407-0KR02-0AA0 arrangement must allow one supply to carry the required rack load after the other source fails.
        How can an input problem be separated from an output overload on Siemens 6ES7407-0KR02-0AA0?
        Compare Siemens 6ES7407-0KR02-0AA0 input voltage, front LEDs, 5 V and 24 V rail measurements, rack diagnostics, and module current totals before replacing the supply.

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