Home / Mitsubishi Electric (Factory Automation) / Mitsubishi MELSEC-L Series – I/O / LY28S1A Mitsubishi MELSEC-L Series Output

Available on request

LY28S1A Mitsubishi MELSEC-L Series Output

MPN: LY28S1A · Brand: Mitsubishi Electric (Factory Automation)

Price on request

Discontinued by Mitsubishi Electric (Factory Automation) — we can still source the original LY28S1A (new, used or refurbished, subject to availability). Request a quote below.

Request a Quote

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

30-day returns, no restocking fee on unused parts

Ships via

Quick facts

Availability	Confirmed on request
Category	Mitsubishi MELSEC-L Series – I/O
Lifecycle	Discontinued
Warranty	12-month (new) · 3-month (used/refurbished)

Shipping & availability

Can I still buy the LY28S1A now that it is discontinued?

Yes. Mitsubishi Electric (Factory Automation) has discontinued the LY28S1A, 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.

When can LY28S1A be shipped?

LY28S1A 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 LY28S1A 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 LY28S1A 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 LY28S1A, subject to availability and destination.

The Mitsubishi Electric LY28S1A is a output in the MELSEC-L Series. Triac output: 8 points, 100...240 V AC, 1 A/point, 8 A/module, response time: 1 ms + 0.5 cycles, all points independent common, 18-point terminal block. Mitsubishi Electric has discontinued it (2024/09 Discontinued); PartnerPLC sources discontinued Mitsubishi parts on the surplus market for maintenance of existing machines. Specifications and manuals below are Mitsubishi Electric's own data.

Specifications

Product

Series	MELSEC-L Series
Category	Output
Type	Triac output
Sales status	2024/09 Discontinued (Mitsubishi Electric)
Outline	Triac output: 8 points, 100...240 V AC, 1 A/point, 8 A/module, response time: 1 ms + 0.5 cycles, all points independent common, 18-point terminal block

Output specifications

Output type	TRIAC output
Number of output points	8 points
Rated load voltage, frequency	100...240 V AC (+10/-15 %), 50/60 Hz (±3 Hz)
Maximum load current	1 A/point, 8 A/common, refer to the derating chart.
Load voltage distortion rate	Within 5 %
Maximum load voltage	264 V AC
Minimum load voltage/current	24 V AC 100 mA, 100 V AC 25 mA, 240 V AC 25 mA
Maximum inrush current	20 A/cycle or less
Leakage current at OFF	3 mA or less (at 240 V AC, 60 Hz), 1.5 mA or less (at 120 V AC, 60 Hz)
Maximum voltage drop at ON	1.5 V or less (at 0.6 A)
Output response time: OFF to ON	1 ms + 0.5 cycles or less
Output response time: ON to OFF	1 ms + 0.5 cycles or less (rated load, resistive load)
Surge suppressor	CR absorber
Fuse	None
Output common terminal arrangement	All points independent

Common specifications

Isolation method	Photocoupler
Dielectric withstand voltage	2300 V AC/minute (altitude 2000 m)
Insulation resistance	10 MΩ or higher by insulation resistance tester
Protection degree	IP1X
External interface	18-point terminal block (M3 screw)
Number of occupied I/O points	16 points (I/O assignment: Output 16 points)
Internal current consumption (5 V DC)	200 mA (TYP. all points ON)
External dimensions: Height	90 mm
External dimensions: Width	28.5 mm
External dimensions: Depth	117 mm
Weight	0.19 kg