Siemens | Simatic S5 6ES5420-4UA12

Siemens Simatic S5 Digital Input Module (6ES5420-4UA12).

Stock Status
Available Now

Warranty

DCS Center Warranty Included

Shipping

Worldwide shipping via DHL, UPS, and Fedex

Repair Time

3-5 weeks. Rush Repair options are available.

Product Details

  • Part Number 1 6ES5420-4UA12

Product Description

Siemens 6ES5420-4UA12 is a Digital Input Module for the Simatic S5 product family.

From a maintenance perspective, digital input hardware creates the path from field-level status signals to control logic, allowing the system to evaluate operating conditions and respond through configured sequences or protective actions. Maintenance planning should reference the installed hardware configuration.

In a SIMATIC S5 system, module selection is governed by the controller family, rack arrangement, electrical interface, and configured program. The exact article number should be matched before installation. Its role should remain distinct from that of similarly named assemblies.

In the signal path, this approach helps preserve the intended system function while keeping selection aligned with the documented ratings, capacity, and compatibility requirements. The surrounding rack and module arrangement should be reviewed before installation.

Product Documentation

  • Common Part Typos 6ES5420-4UAI2, 6ES5420-4UAl2, 6ES54204UA12, 6ES54204UAI2, 6ES54204UAl2, 6ES542O-4UA12, 6ES542O4UA12

Reviews

5.0 Rating

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- Serge, United States

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- Patrick O., United States

"We received the cables Frank. They are in great shape, including the connectors. Thanks for the good service."

- Larry A., United States

"Dear Frank and James, This morning we tested the "new" IEPAF01 cards. Everything is fine!!! I want to express my thanks and my personal acknowledgement on how you..."

- Carmelo I., Italy

"Frank, you're a Rock Star! Thank you for the quick response, and great customer service, very refreshing these days! Great pricing"

- Charles, Ontario, Canada

"DCS CENTER Really saved the day! I had the parts I needed in my hands the day after ordering ( I'm in Toronto Canada ). I highly recommend..."

- Steven T., United States

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Siemens 6ES54204UA12 Simatic S5 PLCs PLC Modules
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