Overview
The Square D QON312L125 is a QO Plug-On OEM mounting base designed for QO, QO-GFI, QO-AFI, and QO-EPD circuit breakers. This 3-phase, 3-wire mounting base supports up to 12 spaces with a 125A main lug rating at 240VAC maximum. Ideal for OEM panel builders and load center replacement applications.
Features
- Compatible with QO, QO-GFI, QO-AFI, and QO-EPD circuit breakers
- Plug-on breaker connection for fast, tool-free installation
- 12 space capacity
- 125A main lug rating
- 3-phase, 3-wire, 240VAC maximum
- OEM-grade construction for load center interior use
Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Square D (Schneider Electric) |
| Model | QON312L125 |
| UPC | 78590186824 |
| Type | Mounting Base |
| Phase Configuration | 3-Phase, 3-Wire |
| Voltage Rating | 240VAC Max. |
| Spaces | 12 |
| Main Lug Rating | 125A |
| Breaker Compatibility | QO/QO-GFI/QO-AFI/QO-EPD |







