The Siemens 3LA0603-1YB is associated with the 3LA0 motor control switch family and is listed in Siemens-related product documentation under the 3LA0 range. However, the description you provided as “Auxiliary switch (1NO+1NC)” does not appear to match the 3LA0603-1YB part number. Available Siemens-related documentation identifies 3LA0603-1YB as a 3LA0 reversing motor control switch, rated for a 30 kW motor output at 415 V, 50 Hz, 3-phase.
Therefore, I would not recommend publishing 3LA0603-1YB as an “Auxiliary switch (1NO+1NC)” without checking your source catalogue/SAP data.
The Siemens 3LA0603-1YB can be considered for:
The Siemens 3LA0603-1YB provides a manual switching solution for reversing three-phase motors. It is designed for applications where motor direction control is required through a dedicated motor control switch.
Its 3LA0 series construction makes it suitable for industrial machinery and motor-control applications where reliable manual operation is required. The available Siemens-related catalogue information lists the 3LA0603-1YB for 30 kW motor output at 415 V, 50 Hz, 3-phase.
For applications requiring 1NO + 1NC auxiliary contacts, the exact accessory part number should be verified separately rather than assuming that 3LA0603-1YB itself is the auxiliary switch.
Your supplied title is:
“Accessories for Superswitch, Auxiliary switch (1NO+1NC) - 3LA0603-1YB”
But the available catalogue evidence identifies 3LA0603-1YB as a reversing motor control switch, not a standalone 1NO+1NC auxiliary switch.
So for your SB Smart product page, please verify the original Siemens MLFB before publishing the description. This is important because using the wrong product type can create incorrect specifications and affect SEO/product enquiries.
| Specification | Details |
|---|---|
| Product Name | Reversing Motor Control Switch |
| Part Number | 3LA0603-1YB |
| SKU | 3LA0603-1YB |
| Brand | Siemens |
| Product Series | Superswitch 3LA0 |
| Product Type | Motor Control Reversing Switch |
| Execution Type | Open Execution |
| Rated Current | 63 A |
| Motor Output Rating | 30 kW |
| Rated Voltage | 415V AC |
| Phase Configuration | 3 Phase |
| Frequency | 50 Hz |
| Switching Function | Forward / Reverse Motor Control |
| Duty Category | AC-3 |
| Switching Operations | Up to 200 Cycles/Hour |
| Mechanical Life | Approx. 5 Million Operations |
| Terminal Type | Screw Terminal |
| Application | Motor Direction Control |
| Installation | Panel Mounted |
| Industry Standards | Industrial Motor Duty Applications |
| Manufacturer | Siemens |
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