Mitsubishi A1S38B-E — Main Base Unit

Part numberA1S38B-E
BrandMitsubishi
DescriptionMain Base Unit
ManufacturerMitsubishi
Product TypeMain Base Unit
Product LineA Series
Part NumberA1S38B-E
Weight2.00 lbs (0.91 kg)
SeriesMelsec-A
I/O Module Capacity8 I/O Modules
Extension Connectors2 Connectors
Location of Extension Connectors1 on the left side, 1 on the right
StandardUL/cUL
Installation Hole Size0.24-inch slot
Installation ScrewsM5 Screws
External Dimensions16.93 x 5.12 x 1.1 inches
DIN Rail HookIncluded
Accessories4 Mounting Screws (M5 x 25 Screws)

Mitsubishi offers the A1S38B-E main base unit, an essential component in the Melsec-A series. This unit supports up to 8 I/O modules and features extension connectors located on both sides for ease of configuration.

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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