A1SD51S Mitsubishi MELSEC-AnS Module

MPN: A1SD51S · Brand: Mitsubishi Electric (Factory Automation)

Price on request

Discontinued by Mitsubishi Electric (Factory Automation) — we can still source the original A1SD51S (new, used or refurbished, subject to availability). Request a quote below.

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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-AnS / QnAS Series (small type, discontinued)
Lifecycle	Discontinued
Warranty	12-month (new) · 3-month (used/refurbished)
Recommended replacement	QD51, QD51-R24

Shipping & availability

Can I still buy the A1SD51S now that it is discontinued?

Yes. Mitsubishi Electric (Factory Automation) has discontinued the A1SD51S, but sourcing discontinued parts is what PartnerPLC specialises in — new old stock, used and refurbished units. Request a quote and we'll confirm availability, condition and lead time. If you are planning an upgrade instead, Mitsubishi Electric (Factory Automation) names the QD51 as its successor — we can quote both.

When can A1SD51S be shipped?

A1SD51S 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 A1SD51S 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 A1SD51S 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 A1SD51S, subject to availability and destination.

Mitsubishi Electric A1SD51S — Module, MELSEC-AnS/QnAS Series (small type). Discontinued by Mitsubishi Electric (final production September 2014, technical bulletin FA-A-0142-C). Mitsubishi names QD51, QD51-R24 as alternative. PartnerPLC sources discontinued and surplus Mitsubishi MELSEC parts — request a quote for price, condition and lead time.

Specifications

Product

Lifecycle	Discontinued by Mitsubishi Electric
Series	MELSEC-AnS/QnAS Series (small type)
Product type	Module
Final production	September 2014
Mitsubishi technical bulletin	FA-A-0142-C
Mitsubishi alternative model(s)	QD51, QD51-R24

Transition notes to QD51 (Mitsubishi)

Note 1	The QD51(R24) has different specifications from those of the
Note 2	A1SD51S as follows:
Note 3	• Fewer total number of channels
Note 4	• General-purpose input: 27 points 26 points
Note 5	• RS232I/F: 2 2
Note 6	• RS422/485I/F: 1 0
Note 7	• Backup power function: SupportedNot supported
Note 8	• Program ROM: Built-in EEP-ROM Built-in flash ROM
Note 9	The QD51(R24) has different specifications from those of the
Note 10	A1SD51S as follows:
Note 11	• Fewer total number of channels
Note 12	• General-purpose input: 27 points 26 points
Note 13	• RS232I/F: 2 1
Note 14	• RS422/485I/F: 1 1