Home / Mitsubishi Electric (Factory Automation) / Mitsubishi MELSEC-Q Series – Base / QA1S51B Mitsubishi MELSEC-Q Series Extension base

Available on request

QA1S51B Mitsubishi MELSEC-Q Series Extension base

MPN: QA1S51B · Brand: Mitsubishi Electric (Factory Automation)

Price on request

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12-month warranty (new) · 3-month (used/refurbished)

30-day returns, no restocking fee on unused parts

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Quick facts

Availability	Confirmed on request
Category	Mitsubishi MELSEC-Q Series – Base
Lifecycle	Active mature
Warranty	12-month (new) · 3-month (used/refurbished)

Shipping & availability

When can QA1S51B be shipped?

QA1S51B is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up QA1S51B in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for QA1S51B and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for QA1S51B, subject to availability and destination.

The Mitsubishi Electric QA1S51B is a extension base in the MELSEC-Q Series. 1 slot, power supply module not required, for AnS Series modules. Mitsubishi Electric has announced its discontinuation (2029/09 To be end of order) — plan spares now; PartnerPLC also sources it on the surplus market after the end of order. Specifications and manuals below are Mitsubishi Electric's own data.

Specifications

Product

Series	MELSEC-Q Series
Category	Extension base
Type	QA1S type
Sales status	2029/09 To be end of order (Mitsubishi Electric)
Outline	1 slot, power supply module not required, for AnS Series modules

Specifications

Number of mountable I/O modules	1
Possibility of extension	Not extendable
Applicable module	MELSEC-AnS series modules
Applicable power supply module	None
Internal current consumption (5 V DC)	0.12 A
Mounting hole size	M5 screw hole or ø5.5 hole (for M5 screw)
External dimensions: Height	130 mm
External dimensions: Width	100 mm
External dimensions: Depth	50.7 mm
Weight	0.23 kg
DIN rail mounting adapter type	―

Specifications

General specifications

Refer to the general specifications of the CPU module.

Downloads & documentation

Official documents from Mitsubishi Electric (Factory Automation), downloaded directly from the manufacturer.

Data sheets & manuals

Supplementary Description for QA1S51B Extension Base Unit (BCN-P5920)	PDF · 0.17MB
QCPU User's Manual (Hardware Design, Maintenance and Inspection) (SH-080483ENG-BC)	PDF · 11.02MB
QCPU-A (A Mode) User's Manual (SH-080065-N)	PDF · 4.36MB
QCPU(A mode) CPU Module User's Manual (Hardware) (IB-0800084-P)	PDF · 2.87MB

12-month warrantyon all new stock

3-month warrantyon used & refurbished parts

30-day returnsno restocking fee on unused parts

Global shippingFast, tracked delivery worldwide