Omron 3G2A3-OC221 — Expansion I/O Unit

Part number	3G2A3-OC221
Brand	Omron
Description	Expansion I/O Unit
Manufacturer	Omron
Product Type	Expansion I/O unit
Product Line	3G2
Part Number	3G2A3-OC221
Weight	0.63 lbs (0.28 kg)
Module	Relay contact output
Number of output points	4
Number of circuits	4
Output switching capacity	250V AC/24V DC, 2 amps
Relay driving voltage	12V DC (internal power supply)
Rated current	2 amps
ON-delay time	15 milliseconds (max.)
OFF delay time	5 milliseconds (max.)
Internal current consumption	2.2 watts (max.)
Maximum switching frequency	1,800 operations/hr
Service life	100,000 operations
Connecting cable	13 cm long

Omron manufactured the 3G2A3-OC221, an expansion I/O unit with four output points, four circuits, and a relay contact output module. It may switch between 250VAC and 24VDC at 2 amps current. The module runs at a relay driving voltage of 12 volts DC with a maximum internal current consumption of 2.2 watts. It has a maximum ON-delay duration of 15 milliseconds (ms) and a maximum OFF-delay time...

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.