1794-OA8I Allen-Bradley FLEX I/O 8-Point Isolated AC Output Module

1794-OA8I — Allen-Bradley FLEX I/O 8-Point Isolated AC Digital Output Module (Original Spare Parts)

The 1794-OA8I is a factory-sealed, 100% Brand New and Factory Sealed AC digital output module designed for the Allen-Bradley FLEX I/O distributed control platform. Engineered for demanding Industrial Automation environments, this Original New module delivers eight individually isolated relay-based output channels capable of switching AC loads from 85 to 264V AC — making it a universal solution for global PLC System deployments. As a genuine Allen-Bradley Original New Spare Part, the 1794-OA8I is the preferred choice for procurement teams and site engineers who cannot afford downtime caused by counterfeit or refurbished components.

Across Oil & Gas facilities, Power Plants, water treatment stations, and discrete manufacturing lines, the Control Module must perform without compromise. The 1794-OA8I addresses the persistent challenge of ground loops and high-voltage transient damage by providing 4,000V AC galvanic isolation between each output channel and the backplane — a specification that sets it apart from non-isolated alternatives in the FLEX I/O family. Whether you are a Procurement Manager sourcing EOL replacement parts or a Senior Engineer commissioning a new distributed I/O rack, this module integrates directly into existing FLEX I/O architectures without hardware modification.

With certified compliance to UL 508, CSA, CE, and Class I Division 2 hazardous location standards, the 1794-OA8I delivers the reliability, traceability, and regulatory confidence that Industrial Automation projects demand. Contact our team today for pricing, lead time, and datasheet access.

Technical Specifications & Selection Guide

Selection Tip: Choose the 1794-OA8I when your application requires individual channel isolation, universal AC voltage compatibility (85-264V), or compliance with Class I Division 2 hazardous area classifications. For non-isolated, higher-density applications, consider the 1794-OA16.

Core Features & Technical Advantages

• True Galvanic Isolation per Channel: 4,000V AC barrier eliminates ground loops and protects the PLC System backplane from field-side faults — a Robust design standard for heavy-duty industrial sites.
• Universal AC Voltage Range (85-264V): A single Control Module SKU covers 120V and 230V installations worldwide, reducing spare parts inventory complexity.
• Precision Relay Switching: Electromechanical relays with silver-cadmium oxide contacts deliver zero leakage in the OFF state and <0.1Ω resistance when closed — critical for sensitive load circuits.
• 100% Original and Brand New: Every 1794-OA8I unit is sourced as an Original New component with full Allen-Bradley traceability, supporting E-E-A-T compliance for regulated industries.
• Hot-Swap Capable: Replace the module during operation in redundant FLEX I/O configurations — minimizing unplanned downtime in continuous-process environments.
• Studio 5000 / RSLogix 5000 Compatible: Tag-based addressing and electronic keying integrate seamlessly into existing PLC System architectures without reprogramming.
• Arc Suppression Built-In: Integrated RC snubber networks across relay contacts extend contact life when switching inductive loads such as solenoid valves and motor contactors.

Typical Application Scenarios

Experienced site specialists consistently deploy the 1794-OA8I in environments where isolation and reliability are non-negotiable:

• Oil & Gas Processing: Control AC-powered solenoid valves and shutdown actuators in Class I Division 2 classified areas where galvanic isolation is a safety requirement, not an option.
• Power Generation & Utilities: Switch contactor coils and indicator panels in substations and turbine control rooms where high-voltage transients are a constant threat to unprotected I/O modules.
• Automotive & Discrete Manufacturing: Drive motor starter coils, pilot lights, and conveyor contactors across multi-voltage production lines — the universal 85-264V range eliminates the need for separate module variants.
• Water & Wastewater Treatment: Operate pump contactors and valve actuators in wet, corrosive environments where robust isolation prevents ground fault propagation through the control network.
• Building Automation & HVAC: Manage lighting contactors, damper actuators, and access control locks in commercial facilities requiring reliable, low-maintenance relay outputs.

Logistics & Professional Service

• ✅ 2-Day Express Shipping Available: Urgent replacement orders for critical Industrial Automation systems are prioritized with DHL, FedEx, and UPS express options to over 150 countries.
• ✅ 1-Year Warranty: All Original New Spare Parts are covered by a 12-month warranty against manufacturing defects, backed by our quality assurance documentation.
• ✅ EOL & Legacy System Support: We maintain stock of discontinued and hard-to-find Allen-Bradley FLEX I/O modules, including the 1794-OA8I, to support legacy PLC System installations that cannot be easily upgraded.
• ✅ Full Documentation Package: Datasheets, certificates of conformance, and country-of-origin documentation are available upon request for procurement and compliance teams.
• ✅ Global Export Compliance: All shipments are accompanied by proper commercial invoices, packing lists, and HS code documentation (HS 8537.10) to facilitate smooth customs clearance.

FAQ — Frequently Asked Questions

Q1: What is the price of the 1794-OA8I, and do you offer volume discounts?
The listed price reflects single-unit retail. For orders of 5 units or more, volume pricing is available — contact sale@ninermas.com with your required quantity and delivery timeline for a formal quotation. Pricing is firm and based on 100% Original and Brand New stock, not refurbished or pulled units.

Q2: What is the lead time for the 1794-OA8I?
In-stock units ship within 1-2 business days. For large-volume orders or specific date requirements, our team will confirm availability and provide a binding delivery schedule. Emergency same-day dispatch is available for critical plant shutdowns.

Q3: Can you provide a datasheet and certificate of conformance for the 1794-OA8I?
Yes. The official Allen-Bradley publication 1794-TD003 covers the 1794-OA8I technical specifications. Certificates of conformance, country-of-origin documentation, and test reports are available upon request for quality and compliance audits.

Q4: Is this module compatible with all FLEX I/O adapters?
The 1794-OA8I is compatible with all standard FLEX I/O communication adapters including DeviceNet (1794-ADN), ControlNet (1794-ACN15), and EtherNet/IP (1794-AENT). It requires a 1794-TB3 or 1794-TBN terminal base and occupies one slot on the adapter (up to 8 modules per adapter).

Q5: How do I verify the module is genuine Allen-Bradley and not counterfeit?
All units supplied by NINERMAS COMPANY LIMITED are sourced through authorized distribution channels. Each module includes original Allen-Bradley labeling, holographic authenticity markings, and a factory-sealed package. We provide full traceability documentation upon request.

Q6: What is the difference between the 1794-OA8I and the 1794-OA8?
The key distinction is isolation: the 1794-OA8I provides individual channel isolation (4,000V AC per channel), while the 1794-OA8 uses a common output group without per-channel isolation. The 1794-OA8I is the correct choice for applications requiring channel-to-channel isolation or hazardous location compliance.

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