Mitsubishi A178B-S1 — The A178B-S1 is a main base unit for Mitsubishi’s A Series motion control applications

Part number	A178B-S1
Brand	Mitsubishi
Description	The A178B-S1 is a main base unit for Mitsubishi’s A Series motion control applications
Manufacturer	Mitsubishi
Product Line	A Series
Part Number	A178B-S1
Weight	2.25 lbs (1.02 kg)
Device	Motion Controller Main Base Unit
Number of Motion Module Slots	2
Number of Sequence Module Slots	6
Axes Control Capability	Multiple Axes of Control
Mass	0.97 kg (2.14 lbs)
Supplied Accessories	4 M5 x 25 mm screws
Shock Resistance	Conforms to JIS B 3502, IEC 61131-2 (147m/s², 3 times each in XYZ direction)
Operating Temperature Range	0 to 55°C
Storage Temperature Range	-20 to 75°C
Operating Humidity Range	10 to 90 % RH, Non-condensing
Storage Humidity Range	10 to 90 % RH, Non-condensing
Overall Dimensions	430 x 130 x 28 mm (10.93 x 5.12 x 1.1 in)

The A178B-S1 is a main base unit for Mitsubishi’s A Series motion control applications. It is engineered for precise multi-axis control and is designed to accommodate two motion modules and six sequence modules.

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.