UsedAutomations — TESTED SURPLUS & OBSOLETE CONTROLS

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Mitsubishi

A1S68B-S1

Programmable Controller Extension Base Unit, 8 I/O slots

Mitsubishi

From $251.28In stockDiscontinued

Product Description

The A1S68B-S1 is an extension base unit for Mitsubishi PLC systems designed to expand I/O capacity with reliable backplane connectivity. It supports installation of up to eight I/O modules on the base, providing a scalable path for distributed control in industrial automation applications. The unit includes an expansion base plate capable of mounting a power supply, enabling flexible system architectures and simplified panel layouts. Built for continuous operation, it maintains signal integrity across installed modules and is suited for machine control, process automation, and retrofit projects. Typical integration involves pairing with compatible Mitsubishi power supplies and CPUs, then populating the eight available slots with required I/O types. The compact, rugged construction helps minimize enclosure footprint while maintaining serviceability for maintenance teams. This listing includes the extension base unit only; I/O modules, CPU, and power supply are sold separately. Verify compatibility with your existing Mitsubishi PLC platform before installation, and follow standard grounding and wiring practices for reliable operation.

Key Features

  • Supports up to 8 I O modules

Buy Options

Condition, indicative price, stock, and lead time. Confirm current availability via RFQ.

New

Price: $381.33
Availability: 7 in stock
Lead time: ~2 day lead

Never Used

Price: $331.73
Availability: 1 in stock
Lead time: ~2 day lead

Used

Price: $251.28
Availability: 54 in stock
Lead time: ~2 day lead

FNFP

Price: RFQ
Availability: 1 in stock
Lead time: Quoted after RFQ

Specifications

Model
A1S68B-S1
Product type
Extension base unit
I O capacity
8 module slots
Weight
0.95 kg
Shipping weight
2 kg
Warranty
12 months
Part #
A1S68B-S1
Category
PLCs/Machine Control
Category
PLC Module/Rack
Weight
2.40 lbs

Before we quote this part

Actual photos when available

Nameplate, condition, and visible wear can be shared before quote when stock photos are not enough.

Test notes for used units

Power-on or function test status is stated when available, with clear condition grading.

Trackable global shipping

DHL, FedEx, UPS, or forwarder options can be quoted with packing photos and tracking details.

Clear DOA boundary

For tested units, quote terms can include 7-day DOA support unless otherwise stated.

Independent sourcing disclaimer

We are not an authorized distributor, reseller, or representative of Siemens, Mitsubishi, Omron, or other manufacturers listed on this site. All product names, trademarks, brands, and logos are the property of their respective owners. Products may be used, refurbished, surplus, or sourced from the secondary market unless otherwise stated.

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FAQ

Q

Is this base compatible with my Mitsubishi PLC?

A

It is an extension base for Mitsubishi systems; confirm compatibility with your specific CPU and power supply model before purchase.

Q

How many I O modules can be installed?

A

Up to eight modules can be installed on this base.

Q

Does it include a power supply?

A

No. It supports mounting a power supply, but the power supply is sold separately.

Q

What is the unit’s weight?

A

Approximately 0.95 kg, with a shipping weight of about 2 kg.

Q

What warranty is provided?

A

12 months, subject to seller terms.