Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 3RK1922-2BA00 |
| Manufacturer | Siemens AG |
| Product Type | Backplane Bus Module (for ET 200pro motor starter system) |
| Product Family | Accessories for ET 200pro motor starters |
| Length | 110 mm (wide motor-starter form factor) |
| Net Weight | 0.242 kg |
| Voltage Rating | 400 V AC (50/60 Hz) |
| Compatible Modules | ET 200pro Motor Starter (MS), Maintenance Switch (MSS), ASm disconnection module |
| Protection Class (Front) | IP00 per IEC 60529, finger-safe |
| Operating Temperature | –25 °C to +55 °C |
| Storage Temperature | –40 °C to +70 °C |
| Humidity | 5–95 % RH, non-condensing (industrial site class) |
| Mounting | Into ET 200pro motor-starter row (snap / guide-rail behind module row) |
| Packaging Dimensions | 140 × 148 × 33 mm |
| Packaging Qty | 1 pc |
| EAN | 4011209645295 |
| UPC | 662643240818 |
| HS / Commodity Code | 85366990 |
| RoHS Compliant | Yes, since 2012-05-01 |
| WEEE | Compliant (2012/19/EU) |
| Origin | Romania (RO) |
| PLM Status | PM300 – Active Product |
Main Features and Advantages
Dual-Role Backbone: Power + Data. The Siemens 3RK1922-2BA00 is not a “dumb bus bar” — it is the engineered 110 mm carrier that routes 400 V L1/L2/L3 and PE laterally behind each MS/MSS/ASm module, and simultaneously carries the ET 200pro internal communication bus (Profinet IRT + Profisafe) that links every motor-starter head to the IM. This dual-role design is what lets an ET 200pro motor-starter station with 12 motors need only one 400 V infeed and one IM cable back to the controller, instead of 12×3 power wires + 12×control wires. For panel builders, the 3RK1922-2BA00 cuts cabinet wiring time by roughly 60 % on motor-starter rows — fewer terminals, fewer crimp errors, fewer hot-spots.
110 mm = Wide Motor-Starter Envelope. ET 200pro uses three widths: 30 mm (electronic modules, I/O), 60 mm (compact MS small-frame), and 110 mm (full MS with power terminals, MSS, ASm). The 3RK1922-2BA00 is the 110 mm variant, meaning it is the backplane you reach for when the row includes motor starters with power-wiring (contactor + overload + disconnect in one 110 mm head). If your row mixes 60 mm and 110 mm, Siemens uses different backplane codes for the 60 mm segments — do not try to force a 3RK1922-2BA00 behind a 60 mm MS; the guide pins and power-bar spacing won’t mate.
Finger-Safe IP00 with Insulating Channels. The front face of the Siemens 3RK1922-2BA00 is IP00 per IEC 60529 but “finger-safe” — the 400 V copper bars run inside molded insulating channels, and the module sits behind the ET 200pro module row’s own protective front (the MS/MSS/ASm heads snap onto the front of the backplane, and those heads carry their own IP65/67 rating when the station is closed). During commissioning, a technician probing the MS terminal block cannot reach the backplane 400 V bars; during operation, the 3RK1922-2BA00 lives enclosed. This is deliberate — the backplane is not a user-accessible part, it is a cabinet-internal backbone.
400 V / 50-60 Hz Universal. The 3RK1922-2BA00 is rated 400 V AC and works on both 50 Hz (EU/Asia) and 60 Hz (North America/mining) supplies without derating. For global OEMs building conveyor skids in one region and shipping to another, the same Siemens 3RK1922-2BA00 BOM line works both sides of the Atlantic — one spare SKU, no regional split.
Plug-and-Play Row Expansion. Adding a new motor starter to an existing ET 200pro row: power down the 400 V infeed, slide the last MS off the row end, insert a new 3RK1922-2BA00 segment (they daisy-chain), snap the new MS + the old MS back on, re-power, and the IM auto-enumerates the new station. No re-termination of 400 V L1/L2/L3 at the terminal block, no new control wire. For flexible lines where conveyor zones get added mid-season (parcel hubs before peak, brewery filler additions), this expandability is the 3RK1922-2BA00‘s quiet superpower.
Romania Production, PM300 Active. The Siemens 3RK1922-2BA00 is built in Siemens’s Romanian facility (part of the broader Siemens Low-Voltage & Controls European footprint), and sits in PM300 “active product” PLM status with ~3-day factory lead via Industry Mall. This means no end-of-life surprise for the next 5–7 years at least — important for plants standardising ET 200pro motor-starter stations across a site and wanting spare continuity.