Keylock Body for Siemens 3SU1 Momentary Circuits
The A6X30136885 is a keylock momentary switch body from the Siemens 3SU1 series. It ships bare—no contact block included—meaning every quote needs that accessory line item verified before the PO goes out. The 22.3mm round panel cutout is standard across the 3SU1 family, so replacement of existing O.M.R.-branded bodies is usually a bolt-in affair if the operator type is correct.
On-page parameter snapshot
- Series: 3SU1 | Type: Momentary | Actuator: Keylock
- Illumination: Non-Illuminated | Requires: Contact Block(s)
- Panel Cutout: 22.3mm (Round) | Package: Box
- RoHS: ROHS3 Compliant | Status: Active
- Manufacturer lead time: 2 weeks (back-order allowed)
Quote Scope for Stockists
Integrator Ines, controls engineer needing drop-in compatibility: the A6X30136885 uses the same 22.3mm round cutout and 3SU1 mounting geometry as every other body in this series. Keylock orientation and momentary vs. maintained action are the only functional differentiators—and this one is definitely momentary. Confirm your safety circuit logic requires a spring-return key position before committing.
Selection Logic and Safety Circuit Fit
The A6X30136885 is ROHS3 compliant with EAR99 export classification (HTSUS 8538.90.8180). It carries Active status, which means Siemens is still producing it—no obsolescence risk flagged on this run. The non-illuminated keylock actuator is suitable for panels where key-operated access control is required—machine guard overrides, service modes, or any circuit that demands deliberate human action to activate.
Night-Shift Neil, maintenance tech who has seen fried boards: remember—contact blocks are sold separately. A dead front panel with no output often means nobody checked whether the block was rated for the load, not that the switch body failed. Make sure your contact block selection matches the voltage and current of the controlled circuit.
Procurement Checks Before You Book
- Confirm contact block compatibility — this body requires Contact Block(s); the evidence does not specify the exact block series. Verify MPN for the block matches your panel's existing installation before quoting.
Known Cross-Reference in the 3SU1 Family
The body is also cross-listed under alternate manufacturer aliasing: 3SU1000-4GC01-0AA0-Z and 3SU10004GC010AA0-Z appear in sourcing databases. If your procurement system flags those strings, the part you're looking at is still the A6X30136885.
Design engineer's notes (limits and rails)
Use siemens A6X30136885 (KEY-OPERATED SWITCH O.M.R. O<I); category path: Switches > Configurable Switch Components > Configurable Switch Bodies; confirmed specs: series: 3SU1; Type: Momentary; Package: Box; Product Status: Active only after you have mapped its headline specs to the machine safety concept: supply rails, fault behavior, and any mandatory approvals implied by the raw fields—not generic catalog guesses.
Commissioning field notes
Installation teams should capture photos/part markings for traceability and compare them to the MPN string above before closing the work order.
Selection notes: wiring footprint and series
Selection should explicitly record why this SKU beat adjacent catalog lines: which numeric limits or certifications in the raw row drove the pick.