Siemens A6X30138448 — 3SU1 Illuminated Pushbutton Operator
3SU1 Illuminated Pushbutton — Selection Trade-offs
- Illuminated vs. non-illuminated operator body: The seed body carries an illuminated lens carrier and requires a separate illumination source module. Alternates such as A6X30138458 and A6X30138407 omit the illumination requirement entirely — reducing module count but sacrificing pilot-light status indication.
- Color-coded lens and visibility: Yellow is specified for the seed; other illuminated variants (A6X30138430 clear, A6X30138426 white, A6X30138411 yellow) share the same illumination architecture. Color choice is driven by function coding (stop/start/acknowledge) per machine standards — not by switching performance.
- Contact block sourcing: All listed bodies require contact block(s). Block type (NO/NC/SPDT), rating, and switching logic must be selected separately; the operator body alone provides mechanical actuation.
- Panel cutout compatibility: All parts in this group share a 22.3 mm round panel cutout. Retrofit into existing 22 mm pilot device layouts is straightforward when the same cutout is present.
- ROHS3 compliance: All alternates list ROHS3 Compliant status; no difference in environmental compliance is a selection discriminator within this group.
Catalog Comparison — 3SU1 Operator Bodies (Illuminated vs. Non-Illuminated)
| Parameter | A6X30138448 | A6X30138430 | A6X30138458 | A6X30138538 |
|---|---|---|---|---|
| Illumination | Illuminated | Illuminated | Non-Illuminated | Non-Illuminated |
| Actuator Type | Pushbutton, Round | Pushbutton, Round | Pushbutton, Round | Pushbutton, Round |
| Panel Cutout | 22.3mm (Round) | 22.3mm (Round) | 22.3mm (Round) | 22.3mm (Round) |
| Series | 3SU1 | 3SU1 | 3SU1 | 3SU1 |
| Requires | Contact Block(s), Illumination Source | Contact Block(s), Illumination Source | Contact Block(s) | Contact Block(s) |
| Color | Yellow | Clear | Gray | Blue |
Why the Illuminated Variants Differ from Non-Illuminated Peers
A6X30138448 vs. A6X30138430: Both carry the illuminated attribute and share the same series, actuator type, panel cutout, and external requirements (contact blocks plus illumination source). The primary visible difference is lens color — yellow versus clear — which affects light transmission and color-coded status indication without altering the underlying switching mechanism.
A6X30138448 vs. A6X30138458: The seed is illuminated and requires an illumination source; A6X30138458 is a non-illuminated pushbutton that omits the light carrier and its associated source module. Both share the same 22.3mm round cutout, round pushbutton form factor, and contact block requirement. Switching performance is otherwise determined by the contact block chosen, not the operator body.
Key Specifications
| Specification | Value |
|---|---|
| Series | 3SU1 |
| Actuator | Pushbutton, Round |
| Illumination | Illuminated |
| Panel Cutout | 22.3mm (Round) |
| Compatible Series | Siemens, 22mm |
| Requires | Contact Block(s), Illumination Source |
| Encapsulation | Box |
| Package | Box |
| Product Status | Active |
| RoHS | ROHS3 Compliant |
Ordering Note — 3SU1 Modular System
Siemens 3SU1 is a modular 22mm operator line. The operator body (color/lens) is ordered separately from contact blocks and illumination modules. For a functional illuminated pushbutton, the complete bill of materials includes at minimum: operator body, contact block(s), and illumination source. Assembly follows Siemens' snap-fit mechanical engagement; no tools are required for block attachment on the operator body side.
FAQ
Does A6X30138448 include a contact block or illumination module? No. The body requires contact block(s) and an illumination source to function as a complete switching device.
What panel cutout does A6X30138448 require? 22.3 mm round cutout, consistent with the broader 3SU1 series and standard 22mm pilot device enclosures.
Can A6X30138458 be used in the same panel cutout as A6X30138448? Yes. Both have the same 22.3mm round panel cutout and 3SU1 form factor. A6X30138458 lacks the illuminated lens carrier and illumination source requirement, making it a non-illuminated pushbutton with a gray actuator.