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Allen-Bradley 1794-OA8 Flex I/O Digital AC Output Module

Allen-Bradley 1794-OA8 Flex I/O Digital AC Output Module

Series#: AllenBradley

Product Details

1794-OA8 Allen-Bradley FLEX I/O Digital AC Output Module – reliable and robust industrial control solution.
8-point digital AC output interface designed for seamless integration with 120/240VAC loads.
Compact modular design for space-saving installation in distributed I/O systems.
High surge current handling and built-in isolation for enhanced system protection.
Compatible with all FLEX I/O communication adapters and backplanes.
Guaranteed 100% Original factory condition, offering fast and secure worldwide delivery.

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Specification

Datasheet (PDF)

The Allen-Bradley 1794-OA8 is a high-performance FLEX I/O digital AC output module engineered for demanding industrial automation environments. Designed to deliver reliable switching of AC loads, this module features 8 individually isolated output channels capable of handling 120/240VAC at up to 2 amps per point. The 1794-OA8 is a cornerstone component for distributed control systems requiring robust output expansion, offering seamless connectivity with 1794 series backplanes and communication adapters. Its compact form factor reduces panel space while maintaining superior thermal performance and electrical isolation, ensuring long-term operational stability in harsh factory floor conditions.

Parameter	Specification
Product Type	FLEX I/O Digital AC Output Module
Model Number	1794-OA8
Number of Outputs	8 (individually isolated)
Output Voltage Range	85-265VAC (nominal 120/240VAC)
Output Current per Point	2A continuous Standard Models 60°C ambient
Output Current per Module	8A total (derated based on ambient temperature)
Surge Current Rating	10A for 10ms per point
Off-State Leakage Current	Max 2.0mA Standard Models 265VAC
On-State Voltage Drop	Max 1.5V Standard Models 2A
Isolation Voltage	1500VAC between outputs and backplane; 500VAC between channels
Response Time (Off to On)	Typical 1ms (half-cycle)
Response Time (On to Off)	Typical 1ms (half-cycle)
Recommended Fuse	External 2.5A fast-acting fuse per point
Power Supply Requirement	5VDC from backplane (40mA typical)
Operating Temperature	0°C to 60°C (32°F to 140°F)
Storage Temperature	-40°C to 85°C (-40°F to 185°F)
Relative Humidity	5% to 95% non-condensing
Dimensions (H x W x D)	94mm x 48mm x 70mm (3.7 in x 1.89 in x 2.76 in)
Weight	Approximately 0.18 kg (0.4 lbs)
Enclosure Rating	Open-style (suitable for panel mounting)
Compatible Backplane	1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB6 (terminal base units)
Communication Adapters	1794-ACN, 1794-ACNR, 1794-ASB, 1794-CE3, 1794-CE4 (any FLEX I/O adapter)
Certifications	UL 508, CSA C22.2 No. 142, CE Mark, ATEX (Zone 2, II 3G)
Wiring	Removable terminal block (screw-type, 14-22 AWG)
LED Indicators	Green for output ON status per channel; Power OK LED
Protection Features	Short-circuit protection via external fusing; thermal shutdown protection
Applications	Motor starters, solenoid valves, contactors, lighting controls, AC relays