Siemens A6X30139428 Keylock Switch Body
Keylock Switch Integration in 3SU1 Series
The A6X30139428 is a Siemens keylock switch front element designed for the 3SU1 modular operator series. These front elements mount on 22mm operator panels within machine control cabinets, providing physical key-based position selection that requires separate contact blocks to complete switching circuits. The device is non-illuminated and ships as a box-encapsulated front element.
Catalog Parameters
| Parameter | Value |
|---|---|
| Series | 3SU1 |
| Actuator Type | Keylock |
| Illumination | Non-Illuminated |
| Panel Cutout | 22.3mm Round |
| Encapsulation | Box |
| Requires | Contact Block(s) |
| Compatible Series | Siemens, 22mm |
| RoHS Status | ROHS3 Compliant |
| Product Status | Active |
| Manufacturer | Siemens |
Catalog Comparison
The following parts share identical specs across all listed parameters; differentiation is limited to switch function designation.
| MPN | Switch Function | Similarity |
|---|---|---|
| A6X30139428 | CES. O<I | Seed |
| A6X30139491 | O.M.R. O<I | 0.96 |
| A6X30139490 | O.M.R. O<I | 0.96 |
| A6X30139464 | O.M.R. I-O | 0.96 |
All four catalog entries share: 3SU1 series, keylock actuator type, non-illuminated design, box encapsulation, 22.3mm round panel cutout, and requirement for contact blocks. The numerical prefix in each MPN encodes the specific throw configuration.
Why they are similar: Each alternates uses the same Siemens 3SU1 modular platform with identical physical mounting and interface specifications. The MPN differences reflect throw arrangement variants (CES and O.M.R. designations) rather than differing electrical or mechanical ratings.
Similar Siemens 3SU1 Catalog Parts
| MPN | Switch Function | Similarity |
|---|---|---|
| A6X30139278 | O.M.R. I>O< | 0.92 |
| A6X30139221 | O.M.R. I-O | 0.92 |
| A6X30139229 | O.M.R. O-I | 0.92 |
| A6X30139287 | O.M.R. O<I | 0.92 |
| A6X30139288 | O.M.R. O<I | 0.92 |
These parts share the same 3SU1 platform specifiers (keylock actuator, non-illuminated, box, 22.3mm round cutout, contact block requirement) with slightly shorter numeric prefixes indicating different throw variants.
FAQ
What switch function does the A6X30139428 provide? The catalog designation is "CES. O<I" indicating a center-off bidirectional throw configuration within the 3SU1 keylock platform.
Can this switch body operate without additional components? No. The A6X30139428 is a front element only; it requires separately ordered contact blocks to complete an electrical switching circuit.
What panel preparation is needed for installation? The listed panel cutout dimension is 22.3mm round, matching the standard 22mm operator series form factor.