Mitsubishi A3NCPUR21 — CPU Module

Part number	A3NCPUR21
Brand	Mitsubishi
Category	PLC Processor
Description	CPU Module
Manufacturer	Mitsubishi
Product Line	A Series
Part Number	A3NCPUR21
Weight	0.75 lbs (0.34 kg)
Product	CPU Module
Program Capacity for Sub-sequence Program	Max. 30k steps
External Dimensions (HxWxD)	250 x 79.5 x 121 mm
Processing Speed (Sequence Instructions)	1.0-2.3 µs/step (Direct Mode), 1.0 µs/step (Refresh Mode)
5 VDC Internal Power Consumption	1.95A
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

The Mitsubishi A3NCPUR21 is a central processing unit module designed for versatile control applications. This unit caters to demanding operational requirements with program capacities of up to 30k steps for both main and sub-sequence programs, enabling sophisticated data handling and execution.

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.