Mitsubishi A3NCPUP21 — The A3NCPUP21 is a dedicated CPU module from Mitsubishi's A Series that facilitates efficient sequence control

Part number	A3NCPUP21
Brand	Mitsubishi
Category	PLC Processor
Description	The A3NCPUP21 is a dedicated CPU module from Mitsubishi's A Series that facilitates efficient sequence control
Manufacturer	Mitsubishi
Product Line	A Series
Part Number	A3NCPUP21
Weight	1.69 lbs (0.77 kg)
Module	CPU Module
Processing Speed (Sequence Instructions)	1.0-2.3 µs/step (direct mode), 1.0 µs/step (refresh mode)
5 VDC Internal Power Consumption	1.55A
Operating Temperature Range	0°C to 55°C
Control System	Sequence program method
Selectable I/O Control Mode	Refresh/direct method
Programming Language	Language dedicated for sequence control (Relay symbol, logic symbolic language)
I/O Points	2048 points
Allowable Momentary Power Interruption Time for the System	20 ms or less
Memory Capacity	Max. 448k bytes
Program Capacity for Main Sequence Program	Max. 30k steps
Program Capacity for Sub-sequence Program	Max. 30k steps

The A3NCPUP21 is a dedicated CPU module from Mitsubishi's A Series that facilitates efficient sequence control. It supports a processing speed of 1.0 to 2.3 microseconds per step in direct mode and has a refreshing capability of 1.0 microseconds per step.

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.