1746-OW4 Allen-Bradley Relay Output

Allen-Bradley

1746-OW4 Allen-Bradley SLC 500 Series Relay Output Module

SKU: 1746-OW4

In Stock

Dimensions: 12.7 x 5.1 x 15.2 cm
Country of origin: USA
Payment: T/T, Western Union
Shipping port: Xiamen

Categories : All Products, Allen-Bradley, Allen-Bradley PLC-5 & SLC 500 Legacy, I/O Modules & Signal Splitters

Tags : Allen-Bradley SLC 500, Digital Output Cards, Industrial Automation Controllers, Programmable Logic Controllers

1 years warranty

Delivery time: 3-7 business days

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The Allen-Bradley 1746-OW4, also cataloged as the 1746-OW4 Relay Output Module, operates as a dedicated hardware component for electromechanical load switching within SLC 500 rack chassis environments.

Channel Configuration & Part Cross-Reference

Primary Part Number: 1746-OW4
Alternate Catalog Designations: 1746-0W4, 1746-OW4/A
System Platform: SLC 500
Output Channel Count: 4 Points
Contact Configuration: Normally Open (N.O.) Relay Contacts
Operating Signal Voltage: 5-265 VAC or 5-125 VDC

Electrical Ratings & Physical Specifications

Parameter	Specification
Model	1746-OW4
Brand	Allen-Bradley
Origin	USA
Weight	0.3 kg
Shipping Dimensions	12.7 x 5.1 x 15.2 cm
Module Type	Relay Output Module
Operating Voltage	5-265 VAC / 5-125 VDC
Continuous Current / Output	1.5 A at 120 VAC
Operating Temp	0 to 60 deg C
Power Consumption	Determined by Backplane Current Draw & Relay Coil Energization
Tariff Code	8537101190

Deterministic Network Sync & Backplane Velocity

The 1746-OW4 receives binary discrete outputs from the SLC 500 processor across the chassis backplane bus, driving isolated mechanical relay contact sets. High backplane bus communication velocity preserves time-critical task execution across EtherNet/IP deterministic networks, supporting optimized I/O density scaling and maintaining firmware flash compatibility across legacy and current control platforms.

Shipment Package Inventory

1 x Allen-Bradley 1746-OW4 Electromechanical Output Module
1 x Terminal Block & Hardware Wiring Sheet

Cabinet Installation & Terminal Wiring Procedures

Chassis Slot Insertion: Align the circuit board module with upper and lower card guides of the SLC 500 chassis, sliding inward until side latches firmly click.
Terminal Connector Termination: Wire field power and load lines to designated screw terminals, ensuring proper insulation strip length.
Inductive Load Suppression: Install MOV or RC surge suppressors across external inductive AC loads to prevent contact arcing and back-EMF noise.

Frequently Asked Questions

Q: What voltage range is supported by the 1746-OW4 contact outputs?

The relay contacts handle operating voltages from 5 to 265 VAC and 5 to 125 VDC.
Q: What is the maximum continuous current rating per point at 120 VAC?

Each normally open relay output channel is rated for up to 1.5 A continuous current at 120 VAC.
Q: How many output points are available on the 1746-OW4 module?

The hardware provides 4 individually wired, normally open electromechanical relay outputs.
Q: What alternate catalog numbers refer to the 1746-OW4 hardware?

Cross-reference part numbers include 1746-0W4 and revision series 1746-OW4/A.
Q: Can AC and DC loads be switched simultaneously on different channels?

Yes, channels with isolated common terminals can control distinct AC or DC voltage loops.
Q: Does the module require external surge suppression for inductive loads?

External suppression networks (RC snubbers or suppression diodes) are recommended to extend contact life.
Q: Is module insertion allowed while the SLC 500 chassis is powered?

Power down the SLC 500 chassis backplane power supply before removing or inserting I/O modules.
Q: What is the physical shipping weight of the 1746-OW4 unit?

The net shipping weight of the packaged 1746-OW4 relay output module is 0.3 kg.

Shipping

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Industrial Packaging: Professional ESD protection and reinforced shock-absorbent packaging.

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Condition: Items must be in their original, factory-sealed condition with all tags.
Hassle-Free Process: Contact sales@maxwellplc.com for a return label and instructions.
Fast Refunds: Approved refunds are processed to your original payment method within 10 days.

Warranty

12-Month Guarantee: A comprehensive one-year warranty covers all functional defects.
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