Mitsubishi QA1S51B - PLC Base Unit
The Mitsubishi QA1S51B Programmable Logic Controller is an extension base unit with one slot for compact PLC expansion systems. Part of the Mitsubishi automation lineup, this Mitsubishi PLC base unit belongs to the MELSEC-Q SERIES and features 100 mm width, 130 mm height, 50.7 mm depth, and 0.23 kg weight.

| Brand | Mitsubishi Electric |
| Product Type | PLC(Programmable Logic Controller) |
| Product | QA1S51B |
Mitsubishi PLC Base Unit QA1S51B Technical Specifications
| Specification | Value |
|---|---|
| Series | MELSEC-Q SERIES |
| Type | EXTENSION BASE UNIT |
| Slots | 1 |
| Depth (mm) | 50,7 |
| Weight (kg) | 0,23 |
| Width (mm) | 100 |
| Height (mm) | 130 |
The QA1S51B Programmable Logic Controller from Mitsubishi is a single-slot extension base unit designed for compact PLC configurations in industrial automation. This QA1S51B Programmable Logic Controller operates within the MELSEC-Q SERIES and supports one slot, making it suitable for space-restricted control panels requiring structured expansion.
In automation systems, the QA1S51B Programmable Logic Controller is used in conveyors, packaging machines, assembly lines, and auxiliary control cabinets. Its defined physical dimensions support orderly module placement, consistent wiring layouts, and predictable cabinet sizing, which helps engineers maintain stable and organized PLC installations.
The Mitsubishi QA1S51B PLC extension base unit supports reliable system construction through fixed mechanical dimensions and series compatibility. As part of the MELSEC-Q SERIES, it aligns with Mitsubishi PLC architectures used across industrial environments. The QA1S51B Programmable Logic Controller is suitable for applications requiring compact extension capability with consistent physical integration.




