The Allen-Bradley 1746-OW4 is a 4-point relay output module designed for the SLC 500 programmable controller family. This module provides versatile switching capabilities for industrial automation applications, supporting a wide range of voltage levels for both AC and DC loads. As a relay-based output unit, it offers mechanical isolation between the controller logic and the field devices, making it suitable for various control signals.
Features
Four independent relay output channels for flexible load control.
Supports a broad operating voltage range: 5 to 265 VAC or 5 to 125 VDC.
Uses normally open (N.O.) relay contacts for reliable circuit switching.
Compatible with the standard Allen-Bradley SLC 500 I/O chassis architecture.
Compact design optimized for space-efficient control cabinet installation.
Applications
This module is typically utilized in manufacturing and process control environments where discrete output signals are required to drive actuators, pilot lights, interposing relays, or small contactors. Its ability to switch both AC and DC voltages makes it a flexible solution for mixed-signal control panels.
Technical Specifications
Model
1746-OW4
Output Points
4
Output Type
N.O. Relay Contact
AC Operating Voltage
5-265 VAC
DC Operating Voltage
5-125 VDC
Current Rating (120 VAC)
1.5 A per output
Manufacturer
Allen-Bradley
Installation Guidelines
Ensure the SLC 500 chassis power is disconnected before installing or removing the module.
Verify that field wiring is routed according to local electrical codes and shielded where necessary to prevent EMI.
Handle the module using proper ESD (Electrostatic Discharge) safety practices to prevent internal component damage.
Ensure the module is fully seated into the backplane connector and secured with the retaining screws.
Check that load current requirements do not exceed the specified maximum amperage per output channel.
FAQ
Is the 1746-OW4 still in production?
No, this model has been discontinued by the manufacturer. We provide high-quality surplus units to support legacy system maintenance and replacements.
What type of relay contacts does this module use?
The 1746-OW4 features four normally open (N.O.) relay contacts, providing robust electrical isolation for your control circuits.
