Product Description
The Mitsubishi Electric Q312B-E is a 12-slot main base unit (rack/chassis) designed for the MELSEC-Q Series programmable logic controller platform. It serves as the foundational backplane for mounting CPU modules, power supply modules, and up to 12 I/O or special function modules in a single rack. The "-E" suffix designates the European/export market variant, and it supports DIN rail mounting via an optional Q6DIN1 adapter or direct panel screw mounting. Supports up to 4 CPUs on the same backplane, making it suitable for multi-CPU system configurations.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Mitsubishi Electric |
| Model / Part Number | Q312B-E |
| Series | MELSEC-Q |
| Controller Platform | MELSEC-Q |
| Type | Main Base Unit (PLC Chassis / Rack) |
| Number of Slots | 12 |
| Power Supply Slots | 1 |
| I/O Module Slots | Up to 12 (CPU + I/O + Special Function) |
| Internal Current Consumption | 0.13 A (5 V DC) |
| Compatible Modules | All Mitsubishi MELSEC-Q Series Modules (CPU, I/O, Analog, Communication, Special Function) |
| Applicable Power Supply Modules | Q61P-A1, Q61P-A2, Q63P |
| Mounting Type | DIN Rail (requires Q6DIN1 adapter) or Screw Mount |
| Mounting Hole Size | M4 screw hole or ø4.5 mm hole (for M4 screw) |
| DIN Rail Mounting Adapter | Q6DIN1 (sold separately) |
| Width | 439 mm |
| Height | 98 mm |
| Depth | 44.1 mm |
| Weight | 0.47 kg |
| Maximum Operating Temperature | 55 °C |
| Minimum Operating Temperature | 0 °C |
| Max CPUs Supported | Up to 4 CPUs on same backplane |
| Platform / Compatibility | MELSEC-Q Series (replaces Mitsubishi A Series PLCs) |
| Market Variant | European / Export (-E suffix) |
| RoHS Compliance | Non-Compliant (per Octopart listing) |
We warranty all items for 30 days from date of purchase.
Other Details
We warranty all items for 30 days from date of purchase. If you experience any issues with your item within this period, please contact us and we will work with you to resolve the problem. This warranty covers defects in functionality but does not cover damage caused by misuse, improper installation, or normal wear and tear.Product Videos
Custom Field
GTIN 679523686161
Country/Region of Manufacture Japan
Dimensions 439 mm (W) x 98 mm (H) x 44.1 mm (D)
Mount M4 screw hole or ø4.5 mm (for M4 screw)
Current 0.13 A at 5V DC
Manufacturer Mitsubishi
Cable Q61P-A1, Q61P-A2, Q63P
Empty Weight 0.47 kg
Part Number Q312B-E
Controller Platform MELSEC-Q
Series MELSEC-Q
Shelf E-7 TUB 9
Model Q312B-E
MPN Q312B-E
Type PLC Chassis
