Siemens A6X30138444 — Illuminated Pushbutton Body, 22 mm SIRIUS 3SU1 Series

Overview (Verification Gate)

⚠️ Critical fields absent from catalog data: rated voltage/current of the illumination circuit, lamp/base type, contact ratings of any associated contact block, IP degree of protection of the assembled unit, and max panel thickness. These parameters are not in the supplied fields and must be confirmed on the official Siemens datasheet before any selection decision.

The primary part, A6X30138444, is the red lens variant of a Siemens 22 mm round illuminated pushbutton operator body from the SIRIUS 3SU1 family. It is sold as a configurable body only—the catalog entry explicitly states it requires separate contact block(s) and an illumination source to form a functional switching device. The panel cutout is 22.3 mm round. RoHS3 compliance is marked. No electrical ratings for the lamp circuit or switching contacts appear in the supplied data.

Key Parameters (Catalog Fields Only)

Ordering-Code / Family Context (verify on datasheet)

The A6X prefix in Siemens SIRIUS 3SU1 ordering codes typically encodes the product type, color, and illumination variant. The suffix block 13844 distinguishes the red illuminated configuration within this modular system. Siemens SIRIUS 3SU1 is the current-generation 22 mm operator line replacing older 3SB2/3SB3 series. Do not assume drop-in compatibility with prior series without consulting the Siemens cross-reference.

What the Catalog Does Not Specify

The following information is absent from the supplied fields and must be obtained from the Siemens 3SU1 datasheet or product manual before specifying this part in a control circuit:

• Illumination source type (LED, incandescent, neon) and voltage/rating
• Lamp holder/base style (BA9s, W2x4.6d, etc.)
• Contact block voltage/current ratings (the body alone carries no switching specs)
• Degree of protection of the assembled device (IP rating varies with lens and contact block combination)
• Maximum panel thickness
• Operating temperature range
• Mechanical life (number of operations)
• Materials (lens polymer type, actuator material)

⚠️ Selection must not proceed on electrical ratings until the official datasheet is consulted.

Physical Integration Notes

The body is designed for a 22.3 mm round panel cutout and mounts in the standard 22 mm industrial operator hole pattern common to Siemens SIRIUS, Allen-Bradley 800T/800F, EAO, and other IEC/ISO 1629-compliant 22 mm devices. Since this is a configurable switch body, the engineer must:

1. Select a compatible contact block (e.g., Siemens 3SU11/3SU12 series) that snaps or screws onto the rear of the body.
2. Select a compatible illumination source (lamp module or LED element from the 3SU1 lamp portfolio).
3. Verify that the assembled stack (lens + body + contact block) meets the required IP rating for the enclosure.

Panel cutout, mounting depth, and gasket/seal compatibility all depend on which contact block and lamp module are chosen. These dimensions are not in the supplied fields.

Selection and Substitution Guidance

This body is distinguished by its color (red) and illuminated type. Substituting another color variant (amber, white, yellow, blue) or the non-illuminated variant changes the visual/functional identity of the HMI panel. If the application requires a red illuminated operator, only the red-illuminated variants in the allowlist should be considered. Substitution across color families is not a like-for-like swap in HMI design.

For any substitution, confirm:

• Same MPN prefix series (A6X30xxx)
• Same illumination status (Illuminated vs Non-Illuminated)
• Same panel cutout (22.3 mm round)
• Compatible contact block family

Similar Catalog Parts

All alternates listed below share the same Siemens 22 mm 3SU1 series, actuator type, encapsulation, panel cutout, and require a contact block. They differ in color and/or illumination status.

Why they are similar:

• A6X30138447 shares the identical red-illuminated configuration and all catalog spec values with A6X30138444; the only difference is not reflected in the visible fields and may relate to a manufacturing or revision code — the datasheet must confirm whether this is a true duplicate or a revision-specific variant.
• A6X30138441 / A6X30138443 are the amber-lens equivalents of the same illuminated pushbutton body; they share the same mechanical and assembly parameters and differ only in lens color.
• A6X30138484 is the non-illuminated (black, no lamp required) variant of the same round pushbutton body; it shares the same 3SU1 series, cutout, and contact-block interface but omits the illumination source requirement.

No other 22 mm Siemens illuminated pushbutton bodies appear in the supplied alternate list with higher similarity scores.

FAQ

Q: What contact blocks are compatible with A6X30138444? A: The catalog states "Requires: Contact Block(s)" and "Compatible Series: Siemens, 22mm." The specific 3SU1 contact block MPNs (e.g., 3SU11/3SU12 series NC/NO blocks) are not listed in the supplied fields. Consult the Siemens 3SU1 datasheet for the compatible contact block family.

Q: What illumination source does A6X30138444 use, and at what voltage? A: The catalog does not provide lamp type, base style, or voltage/current for the illumination circuit. The 3SU1 series supports LED and incandescent modules in various voltages. Verify voltage rating and lamp type on the Siemens datasheet before specifying a lamp module.

Q: Can A6X30138444 be used as a direct replacement for a non-illuminated pushbutton? A: No — A6X30138444 is an illuminated operator body requiring a separate illumination source. The non-illuminated variant A6X30138484 shares the same mechanical interface and panel cutout but does not require or accept a lamp module. Substitution decisions must consider whether the HMI design requires illumination.