Mitsubishi A1S58B — Slot Extension Base Unit

Part number	A1S58B
Brand	Mitsubishi
Description	Slot Extension Base Unit
Manufacturer	Mitsubishi
Product Type	Slot Extension Base Unit
Product Line	A Series
Part Number	A1S58B
Weight	1.06 lbs (0.48 kg)
Number of I/O Slots	8 Slots
Compatibility	MELSEC AnS and QnAS series modules
Mounting Type	Screws or DIN Rail Mounting
Installation Hole Size	6 mm
Terminal Screw Size	M4 x 6
Min. Operating Temperature	0 °C
Max. Operating Temperature	55 °C
Min. Storage Temperature	-20 °C
Max. Storage Temperature	75 °C
Installation Altitude	1000 m
Relative Humidity	5 to 95% (Non-Condensing)

The Mitsubishi A1S58B is a versatile slot extension base unit. This unit accommodates 8 I/O slots and is compatible with MELSEC AnS and QnAS series modules, allowing seamless integration into existing systems.

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.