Mitsubishi A1S55B — The Mitsubishi A1S55B is a base unit within the A Series that seamlessly integrates with the MELSEC and MELSEC-A Series

Part numberA1S55B
BrandMitsubishi
DescriptionThe Mitsubishi A1S55B is a base unit within the A Series that seamlessly integrates with the MELSEC and MELSEC-A Series
ManufacturerMitsubishi
Product LineA Series
Part NumberA1S55B
Weight1.88 lbs (0.85 kg)
TypeBase Unit
Slot Count5 Slots
CompatibilityMitsubishi MELSEC, Mitsubishi MELSEC-A Series
Mounting StyleRack-Mountable
Power Supply24 VDC
Ambient Operating Temperature0 to 55°C
Ambient Storage Temperature-20 to 75°C
Special FeatureDesigned for Compact Rack Systems

The Mitsubishi A1S55B is a base unit within the A Series that seamlessly integrates with the MELSEC and MELSEC-A Series. It features five slots for modular configurations, catering to various application needs.

Compatibility data for this part number is being verified. Send an RFQ with your equipment model and serial — our suppliers confirm fitment before quoting.

Data compiled from 1 verified source. Last reviewed 2026-08-16.

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