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Siemens

6AV2123-2DB03-0AX0

Siemens 6AV2123-2DB03-0AX0 KTP400 Basic key and touch HMI

Siemens

Details updated 9/20/2026
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Product Description

The Siemens 6AV2123-2DB03-0AX0 KTP400 Basic is a second-generation SIMATIC HMI Basic Panel with a 4.3-inch, 480 x 272 display, resistive touch operation and four function keys. It uses a 24 V DC supply and has one Industrial Ethernet interface. For a replacement quote, include the full order number, panel revision and engineering-project version, together with your preferred condition, quantity and destination.

Specifications

Category
HMI and Operator Panels
Product family
SIMATIC HMI Basic Panels, second generationSource
Product type
KTP400 Basic key and touch HMISource
Panel designation
KTP400 BasicSource
Display construction
TFT widescreen display, LED backlightingSource
Screen diagonal
4.3 inSource
Display colors
65 536Source
Horizontal resolution
480 pixelSource
Vertical resolution
272 pixelSource
Touch operation
Yes; Analog-resistiveSource
Function keys
4Source
Function keys with LEDs
0Source
Nominal DC supply
24 VSource
Minimum DC supply
19.2 VSource
Maximum DC supply
28.8 VSource
Rated current
125 mASource
Typical input power
3 WSource
User data memory
10 MbyteSource
Industrial Ethernet arrangement
1Source
USB connections
1; Up to 16 GBSource
SD card slots
0Source
PROFINET capability
YesSource
PROFINET IO capability
NoSource
PROFIBUS capability
NoSource
MPI capability
NoSource
EtherNet/IP capability
YesSource
Front protection rating
IP65Source
Rear protection rating
IP20Source
Front housing width
140 mmSource
Front housing height
116 mmSource
Mounting cutout width
124 mmSource
Mounting cutout height
100 mmSource
Mounting depth
34.9 mmSource
Operation (vertical installation) temperature
0 °C to 50 °CSource
Operation (max. tilt angle) temperature
0 °C to 40 °CSource
Operation (vertical installation, portrait format) temperature
0 °C to 40 °CSource
Operation (max. tilt angle, portrait format) temperature
0 °C to 35 °CSource
Engineering software requirement
WinCC Basic V13 / STEP 7 Basic V13 or later, according to the exact article descriptionSource

Before ordering 6AV2123-2DB03-0AX0

  • Match the complete 6AV2123-2DB03-0AX0 order number and hardware revision. Provide the installed controller, communication protocol and WinCC or STEP 7 project version; confirm project compatibility for the offered panel.
  • Check the 124 x 100 mm mounting cutout, 34.9 mm mounting depth, 24 V DC supply and connector arrangement against the installation.
  • The reviewed article lists PROFINET capability but not PROFINET IO, PROFIBUS or MPI. State the protocol required by the application before selecting a replacement.
  • Specify condition, quantity and destination. Request photos and the required checks of the display, touch surface, four function keys and communication port; confirm mounting parts, connectors, price and dispatch timing in the quote.

For photos, test scope and quote checks, see the used HMI panels buying guide.

Condition requirements: New, Never Used, Refurbished, Used, For Parts / Repair. Select your preferred condition in the quote form; current supply is confirmed separately. Condition guide

Current supply
Confirm on quote
Offered condition
Specify your requirement
Hardware / firmware
Confirm the offered unit on quote
Testing
Include your testing requirements in the RFQ
Lead time
Confirm with quantity and destination

Technical references

These references support the product specifications. Check the label and required series when selecting a replacement.

  • Siemens — 6AV2123-2DB03-0AX0

    Exact Article number 6AV2123-2DB03-0AX0; reviewed description and selected technical table rows; source last modified 7/2/2025. · Checked

    Exact article specifications and documented configuration only. Hardware status, installed software, accessories, operating conditions and actual-unit test results require confirmation. Manufacturer delivery and service terms are excluded.

Before we quote this part

Actual photos when available

Nameplate, condition, and visible wear can be shared before quote when stock photos are not enough.

Test notes for used units

Power-on or function test status is stated when available, with clear condition grading.

Trackable global shipping

DHL, FedEx, UPS, or forwarder options can be quoted with packing photos and tracking details.

Clear DOA boundary

For tested units, quote terms can include 7-day DOA support unless otherwise stated.

Independent sourcing disclaimer

We are not an authorized distributor, reseller, or representative of Siemens, Mitsubishi, Omron, or other manufacturers listed on this site. All product names, trademarks, brands, and logos are the property of their respective owners. Products may be used, refurbished, surplus, or sourced from the secondary market unless otherwise stated.

Need 6AV2123-2DB03-0AX0 availability?

Prices and stock can change. Submit quantity, required condition, and destination for a current quote.

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FAQ

How do I confirm availability for 6AV2123-2DB03-0AX0?

Send the complete part number, required quantity, condition and any hardware or firmware requirement. We check current supply and confirm the offered unit and lead time on your quote.

How do I buy 6AV2123-2DB03-0AX0?

Submit a Request for Quote on this page with quantity, required condition, and ship-to country. We respond by email with pricing and delivery options.

What condition options are available for 6AV2123-2DB03-0AX0?

You can request New, Never Used, Refurbished, Used, and For Parts / Repair for 6AV2123-2DB03-0AX0. We confirm the offered condition and current supply on your quote. See our condition guide at https://www.usedautomations.com/condition-codes.