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        • Lifecycle status

          Discontinued / Obsolete by OEM
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        6ES5435-4UA12

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        Siemens 6ES5435-4UA12 is a 435-4 SIMATIC S5 input module with sixteen floating channels for 24–60 V AC field signals. It is intended for legacy discrete sensing.
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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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        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.
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        Technical specifications for 6ES5435-4UA12

        • Manufacturer:
          Siemens
        • Part Number:
          6ES5435-4UA12
        • Product Family:
          Siemens Simatic S5
        • Product Type:
          SIMATIC S5 435-4 digital input module
        • Stock:
          1
        • Rated supply voltage:
          24 to 60 V AC
        • Supply frequency:
          47 to 63 Hz
        • Number of inputs:
          16
        • Isolation:
          Yes, 2 groups of 8 inputs
        • Logic 0 input level:
          0 to 15 V AC
        • Logic 1 input level:
          20 to 72 V AC
        • Rated input current at 48 V AC:
          15 mA typical
        • Rated input current at 60 V AC:
          20 mA typical
        • 2-wire BERO logic 0:
          5 mA max.
        • 2-wire BERO logic 1:
          10 mA min.
        • Input frequency:
          20 Hz max.
        • Positive delay:
          5 ms typical (2 to 15 ms)
        • Negative delay:
          20 ms typical (10 to 25 ms)
        • Input resistance:
          3 kohm
        • Coincidence factor:
          100% ventilated; 75% non-ventilated at 60 V
        • Max line length, unshielded:
          600 m
        • Max line length, shielded:
          1000 m
        • Digital section supply:
          5 V, 100 mA typical
        • Power dissipation at 24 V AC:
          3.5 W
        • Power dissipation at 60 V AC:
          18 W
        • Weight:
          1.21 lbs (0.55 kg)
        • Estimated shipping dimensions:
          40 mm x 255 mm x 195 mm
        • Tariff Code:
          85389091
        • 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 Applications Interoperability Monitoring & Control Firmware & Updates

        Features:

        • Sixteen floating inputs cover the 24 to 60 V AC field range.
        • The input stage is arranged as two groups of eight channels.
        • A compact 435-4 card brings discrete feedback into S5 logic.
        The 435-4 input configuration is offered after a traceable order-code and procurement check.

        It collects limit, switch, and permissive signals used by sequence logic in legacy machinery.

        Measure the installed AC source and retain the two-group wiring order when matching a replacement module.

        Apter Power checks the 435-4 point grouping before releasing a quotation.
        Product resources for Siemens 6ES5435-4UA12:
        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.
        • Senses AC switches, limits, and permissive circuits.
        • Feeds machine-status feedback into sequence logic on legacy S5 systems.
        • Preserves the 435-4 channel order during service replacement.
        • The 435-4 interface accepts AC field signals across the legacy S5 voltage class used by the module.
        • Two isolated input groups allow separate machine sections to share one rack position.
        • A two-wire BERO sensor can be connected when its switching current matches the documented threshold.
        • The input path is intended for discrete AC status sensing rather than analog measurement.
        • Positive and negative transitions use separate delay behavior in the S5 input image.
        • The pulse-response limit supports slow machine contacts, limit switches, and comparable AC signals.
        • No field firmware loading is needed for this 435-4 hardware input function.
        • The controller program reads the channels through the established SIMATIC S5 process image.
        • Replacement work should preserve the existing STEP 5 address assignment and input-delay selection.
        Description
        Siemens 6ES5435-4UA12 is a 16-input 435-4 module for 24–60 V AC field sensing, arranged as two groups of eight. It is designed for discrete status acquisition rather than output actuation.

        Limit switches, contact feedback, permissive circuits, and other AC states can be brought into sequence logic through the established S5 input address. The input stage supports the signal window used by the 435-4 family. A 3 kohm input resistance and the documented 20 Hz operating rate define the signal conditions for connected AC contacts.

        Match the source voltage, two-group wiring, input delay, and connector assignment before a swap. Its 40 mm × 255 mm × 195 mm body should be checked against the available rack clearance. The two eight-point groups should remain identifiable at the terminal level so maintenance teams can trace each field circuit correctly.
        Alternative Names
        6ES5435-4UA12 6ES54354UA12 SIMATIC S5 435-4 Siemens 435-4 digital module S5 435-4 I/O module 435-4 compact module Siemens 6ES5435-4UA12
        Technical notes
        Before commissioning Siemens 6ES5435-4UA12, measure the installed 24–60 V AC source and compare each input conductor with the 435-4 address map.
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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 AC input window belongs to Siemens 6ES5435-4UA12?
        The module provides 16 floating ac inputs for 24–60 v ac field range.
        What source wiring is required by Siemens 6ES5435-4UA12?
        It is matched to 435-4 compact input group and the established SIMATIC S5 backplane.
        Which legacy cabinet function fits Siemens 6ES5435-4UA12?
        Senses AC switches, limits, and permissive circuits.
        What availability note belongs to Siemens 6ES5435-4UA12?
        Siemens treats the legacy order as discontinued; Apter Power can support documentation and sourcing checks.
        Can the field wiring be reused with Siemens 6ES5435-4UA12?
        Compare slot, connector, signal class, address map, and load protection before any exchange.
        How should a Siemens 6ES5435-4UA12 spare be specified?
        Send the full order code, quantity, destination, label details, and manual requirement for a matched response.

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