Mitsubishi A1S58B-S1 — Extension Base Unit

Part number	A1S58B-S1
Brand	Mitsubishi
Description	Extension Base Unit
Manufacturer	Mitsubishi
Product Type	Extension Base Unit
Product Line	A Series
Part Number	A1S58B-S1
Weight	4.31 lbs (1.96 kg)
Number of I/O Modules Loaded	8 modules
Installation Hole Size	6 mm
Terminal Screw Size	M4 (FG Terminal)
Applicable Wire Size	0.75 to 2 mm squared
Applicable Tightening Torque	118 N-cm
DIN Rail Hook	Included
Min. Operating Temperature	0°C
Max. Operating Temperature	55°C
Min. Storage Temperature	-20°C
Max. Storage Temperature	75°C
Operating Humidity	5 to 95% (Non-condensing)

The Mitsubishi A1S58B-S1 belongs to the A Series and functions as an extension base unit. Designed for modularity, it accommodates up to 8 I/O modules, making it suitable for various applications.

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.