Allen-Bradley 1746-OW4 SLC 500 Relay Output Module

Availability: 4 left in stock

The Allen-Bradley 1746-OW4 is a specialized relay output module designed for use within the SLC 500 programmable controller system. This...

SKU: 1746-OW4

Manufacturer: Allen-Bradley
Product No.: 1746-OW4
Product Type: Relay Output Module
Product Origin: USA
Payment:T/T, Western Union
Weight: 300g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

The Allen-Bradley 1746-OW4 is a specialized relay output module designed for use within the SLC 500 programmable controller system. This module provides four independent output channels, utilizing normally open (N.O.) relay contacts to interface with a variety of industrial field devices. It is engineered to support a broad range of operating voltages, making it a versatile component for discrete control applications where electrical isolation between the controller and the load is required.

Features

Four independent relay output channels.
Normally Open (N.O.) contact configuration for reliable switching.
Wide operating voltage range supporting 5 to 265 VAC or 5 to 125 VDC.
Designed specifically for seamless integration into the Allen-Bradley SLC 500 chassis.
Robust construction suitable for standard industrial control environments.

Applications

This module is typically employed in automation systems requiring the switching of varied AC or DC loads. Common applications include driving motor starters, solenoid valves, indicator lamps, and interposing relays where galvanic isolation is necessary to protect the PLC backplane from field-side electrical disturbances.

Technical Specifications

Manufacturer	Allen-Bradley
Model Number	1746-OW4
Module Type	Relay Output Module
Number of Outputs	4
Output Type	N.O. Relay Contact
Operating Voltage Range	5-265 VAC / 5-125 VDC
Current Rating (120 VAC)	1.5 A per output

Installation Guidelines

Ensure the SLC 500 chassis power is disconnected before installing or removing the module to prevent damage to the backplane.
Verify that the module is fully seated in the intended slot and the retaining screws are tightened to ensure a secure connection.
Use appropriate wire gauges and ensure all field wiring is routed away from high-voltage AC lines or sources of significant electromagnetic interference (EMI) to prevent signal noise.
Always adhere to local electrical codes regarding relay contact protection (e.g., using suppression devices for inductive loads) to extend the service life of the relay contacts.
Handle the module using proper ESD-safe practices to prevent damage to internal electronic components.

FAQ

Is the 1746-OW4 compatible with all SLC 500 chassis?
Yes, this module is designed to fit into any standard I/O slot of an Allen-Bradley SLC 500 chassis.

Can I use this module for high-current loads?
The module is rated for 1.5 A at 120 VAC. For loads exceeding this rating, it is recommended to use the 1746-OW4 to drive an external interposing relay or contactor.

What does the 'discontinued' status mean for my spare parts strategy?
While the manufacturer has discontinued this part, it remains a critical component for maintaining legacy SLC 500 systems. We provide tested, reliable units to support the continued operation of your existing infrastructure.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.