SIEMENS SPARE PARTS · PRODUCT & BUYING GUIDE
Siemens 6SL3915-0LX20-0AA0 is listed in the PLC Supply Hub catalog as a pressure switch with a 0–10 mbar range for an air-cooled SINAMICS GM150 (IGBT) drive. For a maintenance or purchasing team, the key question is whether this exact order number matches the component specified for the installed converter.
This guide explains the listed product identity, the cooling-monitoring context and the information to collect before ordering a replacement.
Start with the exact part number. Match 6SL3915-0LX20-0AA0 against the original label and equipment documentation. A similar appearance or pressure range alone does not establish interchangeability.
6SL3915-0LX20-0AA0 at a glance
| Manufacturer | Siemens |
|---|---|
| Order number / MLFB | 6SL3915-0LX20-0AA0 |
| Listed component | Pressure switch |
| Listed pressure range | 0–10 mbar |
| Listed drive application | Air-cooled SINAMICS GM150, IGBT version |
These listing details identify the spare part; they are not a complete manufacturer datasheet. Confirm switching settings, electrical ratings, connections and mounting requirements from the original component and the applicable Siemens documentation.
Why pressure monitoring matters in an air-cooled GM150
Siemens Catalog D 12 describes differential-pressure monitoring of filter contamination in air-cooled GM150 configurations fitted with filter mats. This provides the system context for a cooling-related pressure-monitoring component. The catalog is a historical system reference, not a model-specific datasheet for this switch. See the Siemens SINAMICS GM150 / SM150 catalog, 2018, section 2.4.
For a replacement request, identify the switch’s actual location and reference designation in the cabinet drawings. Record the converter order number and serial number as well as the switch label. This helps distinguish the installed arrangement from another converter in the same product family.
Check compatibility before ordering
- Read the complete MLFB. Use a clear label photograph to check every character in 6SL3915-0LX20-0AA0. Keep the original formatting in the purchase request.
- Identify the installed converter. Include its complete nameplate details and confirm the air-cooled GM150 IGBT configuration against the equipment records.
- Document the existing installation. Supply photographs of the switch, mounting arrangement, pressure connections and terminal markings, taken under the site’s approved access procedure.
- Confirm the required switching behavior. Ask the responsible engineer to verify the specified setting, contact arrangement and electrical ratings against the circuit documentation. The listed pressure range does not define all of these details.
- Define the delivery scope. Ask whether fittings, mounting hardware, tubing, connectors or other accessories are included. Request written confirmation rather than assuming that every item shown in a photograph is supplied.
If a supplier proposes another order number, request a documented compatibility assessment for the installed equipment before accepting the substitution. For help reading labels, see our Siemens MLFB identification guide.
Information to include in a quotation request
A useful inquiry combines the part identity with the commercial requirements:
- Exact order number: 6SL3915-0LX20-0AA0, plus the required quantity.
- Original label photographs and the GM150 converter nameplate.
- Required condition, packaging and any documentation or traceability requirements.
- Destination country and the date the part is needed on site.
- Any requirement for a specific revision or included accessories.
Request a written quotation stating availability, price, currency, lead time, condition, warranty terms and shipping scope. Confirm current lifecycle information separately when it affects your maintenance plan; a catalog listing alone does not establish current production status.
Frequently asked questions
What is Siemens 6SL3915-0LX20-0AA0?
The PLC Supply Hub product listing identifies it as a 0–10 mbar pressure switch for an air-cooled SINAMICS GM150 (IGBT). Use the original equipment documentation to confirm its suitability for a particular installation.
Does 0–10 mbar specify the setting to use?
No. The listed range is not an instruction to set the switch to a particular value. The required switching point and verification procedure must come from the applicable equipment documentation.
Can a generic pressure switch replace it?
Do not approve a substitute from pressure range alone. Have the responsible engineer verify the proposed component’s switching behavior, ratings, mechanical interfaces and suitability for the converter.
Is it currently in stock?
Availability and delivery timing must be confirmed for your requested quantity and condition. This article does not provide a live stock or delivery commitment.
Request 6SL3915-0LX20-0AA0
Send the full order number, quantity, nameplate photographs and delivery destination to PLC Supply Hub for a quotation.
Sources and verification scope
- PLC Supply Hub product listing: current listed model, component description, pressure range and drive application, checked October 26, 2026.
- Siemens Catalog D 12: SINAMICS GM150 / SINAMICS SM150, 2018: historical system-level cooling and differential-pressure monitoring context, section 2.4. This reference does not establish the switch’s full technical specifications or current lifecycle status.
This buying guide does not replace the applicable Siemens operating instructions or the site’s maintenance procedures. Installation, settings and functional checks should be handled by qualified personnel. PLC Supply Hub is an independent supplier and is not affiliated with or endorsed by Siemens AG.