Mitsubishi A1S65B-S1 Base Unit for MELSEC-A Series PLC Systems
The Mitsubishi A1S65B-S1 is a robust 5-slot base unit designed for industrial automation systems requiring reliable backplane connectivity. As a core component of the MELSEC-A series PLC platforms, it provides stable module integration and expandability for demanding control applications including precision positioning, process monitoring, and high-speed machinery operations.
| Specification | Detail |
|---|---|
| Manufacturer | Mitsubishi Electric |
| Model | A1S65B-S1 |
| Type | Backplane Base Unit |
| Slot Configuration | 5 Slots |
| Dimensions (W×H×D) | 230 × 110 × 63.5 mm |
| Weight | 0.7 kg |


Industrial Applications & Compatibility
This base unit is engineered for factory automation systems requiring modular PLC configurations. Compatible with MELSEC-A series CPU modules, I/O units, and communication cards including A1SJCPU, A1SCPUC24, and A1SJ71UC24. Ideal for applications in:
- CNC machine control systems
- Material handling conveyors
- Packaging line automation
- Robotic cell integration
About Vertex Industrial
Vertex Industrial sources premium industrial automation hardware from global suppliers, including liquidated new surplus and professionally refurbished units. We specialize in Mitsubishi, Rockwell, Siemens, and 20+ leading brands. All products include:
- 1-year performance warranty
- Pre-sale technical verification
- Global logistics support
Contact us for best pricing on this unit or to source hard-to-find models via WhatsApp. Our team provides same-day response for urgent requirements.
Can’t find your needed part? Email technical specs to anikaqx@gmail.com for custom sourcing solutions.

















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