PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1771-OX is an isolated power contact output module for PLC-5 systems. It provides 4 isolated contact output points with selectable normal states. Operating voltage ranges from 0 to 250V AC RMS and 0 to 175V DC. The module handles up to 2 A continuous current with a maximum capacity of 200 VA. Overload protection is provided by internal fuses that open during fault events. Four front status indicators show relay coil energization status directly.
This rack-mounted assembly draws 550 mA of backplane current during normal operation. Total power dissipation ranges from 2.6 W to 2.9 W across operational cycles. Thermal dissipation reaches between 8.9 BTU/hr and 9.9 BTU/hr. Contact isolation voltage is rated at 2500V AC RMS to prevent system noise interference. Surge handling supports 5.5 A AC peak for 5 seconds and 15 A DC for 500 ms. Surge events can safely repeat every 10 seconds without damaging the module.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Category | PLCs |
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| Product Line | PLC 5 |
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| Weight | 2.31 lbs (1.05 kg) |
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| Module Type | Digital Contact Output Module |
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| Number of Outputs | 4 Ouputs (isolated) |
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| AC Operating Voltage | 0-250 Volts |
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| DC Operating Voltage | 0-175 Volts |
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| Backplane Current | 550 Miliamperes |
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| Wiring Arm | 1771-WH |
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| Typical AC Signal Delay (Off) | 45 (+/- 15) ms |
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| Typical DC Signal Delay (Off) | 50 ms |
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| Mounting | Rack Mountable |
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TECHNICAL INFORMATION
Features
- Four isolated output circuits with user-selectable contact configurations.
- Operating voltage capacity covering 0 to 250V AC RMS and 0 to 175V DC.
- Continuous current rating of 2 A per output up to 200 VA maximum.
- Integrated overload fuse protection opens circuits during severe fault conditions.
- Individual front-panel status indicators show energization states for each relay coil.
- Isolation barrier rated at 2500V AC RMS between contacts and backplane logic.
- Surge current capability up to 5.5 A AC peak repeatable every 10 seconds.
TECHNICAL INFORMATION
Connections / Interfaces
- Installs into standard 1771 I/O rack slots.
- Compatible with Allen-Bradley 1771-WH field wiring arms.
- Compatible with Allen-Bradley 1771-WN field wiring arms.
TECHNICAL INFORMATION
Installation Guidelines
- Mount the module directly into a compatible 1771 I/O chassis slot.
- Ensure system power is disconnected prior to inserting or removing the assembly.
- Verify that external load currents remain within the 2 A and 200 VA maximum limits.
TECHNICAL INFORMATION
Configuration Guidelines
- Configure output points as normally open or normally closed before placing the module in service.
TECHNICAL INFORMATION
Compatibility
- Allen-Bradley PLC-5 1771 I/O chassis.
- Allen-Bradley 1771-WH wiring arm.
- Allen-Bradley 1771-WN wiring arm.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSAllen-Bradley PLC-5 1771 I/O chassis. Allen-Bradley 1771-WH wiring arm. Allen-Bradley 1771-WN wiring arm.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What is the function of the Allen-Bradley 1771-OX module?
The 1771-OX provides four isolated contact outputs for switching AC and DC field circuits in PLC-5 racks.
Which wiring arms connect to the 1771-OX?
The module connects to field wiring using either the 1771-WH or 1771-WN wiring arm.
What are the voltage and current ratings for the 1771-OX?
The module supports 0 to 250V AC, 0 to 175V DC, and up to 2 A continuous current.
What is the reference market price for the 1771-OX?
Observed market reference pricing is around $159.00 USD. This is an indicative market reference only, not a final quotation.
