Siemens A6X30138406 — 3SU1 Series Green Pushbutton Operator
1. Selection Trade-offs
When specifying this 22mm pushbutton operator, the following dimensions determine fit within a control circuit layout:
- Illumination type: Non-illuminated operators (A6X30138406, A6X30138405, A6X30138476, A6X30138485) require only contact blocks. Illuminated variants (A6X30138496, A6X30138441, A6X30138465) additionally require an illumination source — this is an upstream sourcing step the panel builder must account for.
- Color coding: The MPN suffix distinguishes color within the series (green = 406 / 405, yellow = 400 / 401, gray = 476, black = 485). Color does not affect mechanical or electrical parameters; it affects operator identification in the installed state.
- Contact block procurement: All listed pushbutton operators require contact block(s) as a separate line item. The catalog lists "Requires: Contact Block(s)" — the panel builder must source and mount compatible 3SU1 contact blocks.
- Panel cutout: All variants share the same 22.3mm round cutout — no difference in mounting footprint across illuminated and non-illuminated types.
- Series consistency: All listed parts belong to the Siemens 3SU1 family and are ROHS3 Compliant — suitable for standard industrial enclosure environments.
2. Overview
The A6X30138406 is a round, non-illuminated pushbutton operator from Siemens' 3SU1 series, delivered as a box-packaged component intended for 22mm panel mounting. It is classified as a Configurable Switch Body, meaning the operator head is ordered separately from the contact block — the two snap together during assembly. The actuator is designed for use with Siemens 22mm modular contact blocks and requires at least one contact block to form a functional switch element. All 3SU1 series bodies carry ROHS3 Compliant status and are currently marked Active.
3. Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Siemens |
| Series | 3SU1 |
| MPN | A6X30138406 |
| Actuator Type | Pushbutton, Round |
| Illumination | Non-Illuminated |
| Panel Cutout | 22.3mm (Round) |
| Encapsulation | Box |
| Compatible Series | Siemens, 22mm |
| Requires | Contact Block(s) |
| ROHS | ROHS3 Compliant |
| Product Status | Active |
4. Similar Catalog Parts
The table below compares A6X30138406 against in-catalog peers from the 3SU1 series. These parts require the reader's own qualification — similarity reflects parametric overlap, not interchange approval.
| Parameter | A6X30138406 | A6X30138405 | A6X30138400 | A6X30138496 |
|---|---|---|---|---|
| Title | PUSHBUTTON, GREEN | PUSHBUTTON, GREEN | PUSHBUTTON, YELLOW | CONFIG SW BODY PUSHBUTTON ILLUM |
| Actuator Type | Pushbutton, Round | Pushbutton, Round | Pushbutton, Round | Pushbutton, Round |
| Illumination | Non-Illuminated | Non-Illuminated | Non-Illuminated | Illuminated |
| Panel Cutout | 22.3mm (Round) | 22.3mm (Round) | 22.3mm (Round) | 22.3mm (Round) |
| Series | 3SU1 | 3SU1 | 3SU1 | 3SU1 |
| Requires | Contact Block(s) | Contact Block(s) | Contact Block(s) | Contact Block(s), Illumination Source |
| Similarity | — | 1.00 | 1.00 | 0.96 |
Why the catalog peers are similar
- A6X30138405 — same green color, identical non-illuminated specs, same 22.3mm round cutout and contact block requirement. Part-for-part functionally equivalent.
- A6X30138400 — same actuation type and illumination class; differs only in button color (yellow). Mechanical and electrical parameters are identical.
- A6X30138496 — same 3SU1 series, same round pushbutton form factor, same panel cutout. The distinction is that A6X30138496 is an illuminated variant requiring an illumination source in addition to contact blocks.
FAQ
What differentiates illuminated variants such as A6X30138496 from A6X30138406?
The illuminated variants require a separately sourced illumination source in addition to contact blocks. A6X30138406 is a non-illuminated operator requiring only contact block(s).
Are A6X30138400, A6X30138401, and A6X30138405 drop-in replacements for A6X30138406?
These parts share identical mechanical and electrical specifications (round pushbutton, non-illuminated, 22.3mm cutout, 3SU1 series) and differ only in button color (yellow vs. green). They function equivalently in the switch assembly but require independent qualification by the specifying engineer.
What panel cutout is specified for the 3SU1 series operator bodies?
All listed variants specify a 22.3mm round panel cutout. This is consistent across both illuminated and non-illuminated variants in this catalog group.