Siemens A6X30136885 Key-Operated Switch (3SU1, 22mm Round)

Key Specifications

The A6X30136885 is a key-operated switch body from Siemens' 3SU1 platform, part of the 22mm industrial operator device family. The device is packaged individually in box format and requires separate contact block(s) to form a complete switch assembly. The panel cutout dimension of 22.3mm round aligns with the 22mm device standard for industrial control panels.

3SU1 Keylock Integration

Modular Architecture

The 3SU1 series employs a modular concept: actuator heads and switch bodies are ordered separately and combined in the field. The A6X30136885 provides the keylock mechanism and mounting interface; users select compatible contact blocks (sold separately) to achieve the desired pole configuration and switching logic. This separation allows tailoring the assembly to specific circuit requirements without committing to a fixed contact arrangement at the order stage.

Panel Mounting Context

The 22.3mm round cutout is consistent with the 22mm device standard across the 3SU1 platform. Keylock actuators in this series typically support multiple throw positions (such as maintained, spring-return, or two-position configurations). The title "O.M.R. O<I" indicates a specific position schema—consult the product datasheet for the exact throw sequence and key withdrawal conditions tied to this particular ordering code.

Switching Configuration Notes

Contact Block Selection

The "Requires Contact Block(s)" designation means the A6X30136885 does not include pre-installed contacts. Engineers select from the compatible contact block range for the 3SU1 series to achieve normally open (NO), normally closed (NC), or changeover (CO) switching elements. The appropriate contact block type depends on the safety circuit design and whether the keylock function needs to signal, interlock, or integrate into a larger control architecture.

Non-Illuminated Operation

This unit lacks integral illumination, making it suitable for environments where illuminated operator devices are not required or where ambient lighting conditions do not demand status indication at the operator level. Applications requiring illuminated feedback would need a different actuator or a separate pilot light device mounted adjacent to the keylock.

Similar Catalog Parts

The following Siemens parts share the 3SU1 series, 22mm form factor, and box encapsulation with matching keylock actuator type and contact block requirement. All require user qualification before design adoption.

The six alternate parts differ in key position labeling and throw schema encoded in their ordering codes. A6X30136807 and A6X30136813 share the same "O.M.R. O-I" position designation as the primary part. A6X30136846 specifies "CES. O-I" which indicates a different key withdrawal condition. A6X30136841 carries "CES. I>O-II" suggesting a three-position function. Engineers comparing these alternatives should map the position schema to their specific interlock or access control requirements.

A6X30136385, A6X30136083, and A6X30136635 share the series, cutout, and form factor but employ different actuator types (Selector, Pushbutton-Mushroom, and Joystick respectively) and are grouped here based on catalog parameter overlap rather than functional interchangeability with the keylock device.

FAQ

What contact block types are compatible with the A6X30136885? The records specify that the A6X30136885 requires Contact Block(s) but do not list specific part numbers or configurations; compatible 3SU1 series contact blocks are ordered separately based on switching logic needs (NO, NC, or CO).

Does the A6X30136885 support multiple throw positions? The title "O.M.R. O<I" indicates a specific position schema. The records do not detail the full throw sequence; consult the product datasheet for the position count and key withdrawal conditions associated with this ordering code.

What is the panel cutout dimension for the A6X30136885? The specified panel cutout is 22.3mm round, consistent with the 22mm device standard for the Siemens 3SU1 platform.