Mitsubishi A55B-UL — Base Unit

Part numberA55B-UL
BrandMitsubishi
DescriptionBase Unit
ManufacturerMitsubishi
Product TypeBase unit
Product LineA Series
Part NumberA55B-UL
Weight3.06 lbs (1.39 kg)
SeriesMELSEC-A
I/O Modules5 slots
Input Power100-240V AC
Noise ImmunityHigh
Ambient Temperature14 to 131°F (-10 to 55°C)
BackplaneBuilt-in
CompatibilityMELSEC-A PLCs

The A55B-UL is a 5-slot base unit module by Mitsubishi, designed for use with MELSEC-A series PLCs. It enhances I/O capabilities, offering scalability and flexibility. With high noise immunity and acceptance of 100-240V AC input power, it is ideal for rugged industrial environments. Compact, lightweight (120 x 120 x 60 mm, 0.3 kg), and UL-listed, it ensures reliable and safe performance....

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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