Mitsubishi Q312B-E

Mitsubishi Q312B-E 12-Slot Base Unit

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Mitsubishi Q312B-E Q312B-E 12-Slot Base Unit — PLC Systems & Hardware
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Product Description

Lifecycle Status:

The Mitsubishi Q312B-E 12-Slot Base Unit is a versatile and robust component designed for the MELSEC-Q series. This base unit features 12 slots, providing ample space for various Q Series modules, making it ideal for complex automation systems. A power supply module is required to operate this unit, ensuring reliable and consistent performance.

Engineered to meet CE(EMC) standards, the Q312B-E ensures compliance with essential safety and electromagnetic compatibility requirements. Despite its discontinued status as of September 2010, this unit remains a reliable choice for existing systems requiring maintenance or expansion.

The Q312B-E is designed with practicality in mind, featuring M4 screw holes or ø4.5 holes for easy mounting. Its compact dimensions (98 mm height, 439 mm width, and 44.1 mm depth) and lightweight design (0.47 kg) make it suitable for various industrial environments. Additionally, the unit supports the Q6DIN1 DIN rail mounting adapter, which is sold separately.

This base unit is extendable, allowing for the addition of more I/O modules as needed, providing flexibility and scalability for your automation projects. It is compatible with MELSEC-Q series power supply modules and has an internal current consumption of 0.13 A at 5 V DC.

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Offer details

Best offer from:
Trusted supplier — Germany, member since 2024
Availability:
17 pcs.
In-Stock
Updated at: 04-09-2026
Warranty:
24 months
Condition:
Refurbished
Refurbished - A refurbished item inspected, cleaned, and repaired to full working order by either the manufacturer or a certified technician. The item is in excellent condition and fully operational.
The Seller is responsible for shipping the product and invoicing

Specifications

Model name
Q312B-E
Number of slots
12
Mounting hole size
M4 screw hole or ø4.5 hole (for M4 screw)
Internal current consumption (5 V DC)
0.13 A
Applicable module
MELSEC-Q series modules
Applicable power supply module
MELSEC-Q series power supply module

Available Offers

(9)
Q312B-E Mitsubishi Electric, PLC Systems & Hardware

Mitsubishi Electric

Available:
1 pc.
On Request
Updated at: 22-08-2026
Offer from:
Trusted supplier — Romania, member since 2023, 1–4 employees
Q312B-E Mitsubishi Electric, PLC Systems & Hardware

Mitsubishi Electric

Available:
1 pc.
In-Stock
Updated at: 04-09-2026
Offer from:
Trusted supplier — Germany, member since 2024
Warranty:
24 months
Q312B-E Mitsubishi Electric, PLC Systems & Hardware

Mitsubishi Electric

Available:
5 pcs.
In-Stock
Updated at: 06-09-2026
Offer from:
Trusted supplier — United Kingdom, member since 2023
Warranty:
12 months

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Documents

Data Sheet

Datasheet for Mitsubishi Electric Q312B-E, including specifications and features.

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CAD Models

3D CAD model and technical drawings, ready for your design software.

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