Product Description
Allen-Bradley 1746-NI8 / 1746-OW8 SLC 500 PLC I/O Modules
The Allen-Bradley 1746-NI8 and 1746-OW8 are highly reliable I/O modules designed for the SLC 500 series Programmable Logic Controllers (PLCs). The 1746-NI8 is a high-resolution, 8-channel analog input module that allows for flexible configuration of either voltage (-10V DC to +10V DC) or current (-20mA to +20mA) input ranges per channel via built-in DIP switches. It is ideal for precise monitoring of industrial sensors, though it is not intended for isolated analog applications. The 1746-OW8 is an 8-channel relay output module featuring isolated contacts designed to switch loads up to 2A at 240V AC or 0.5A at 125V DC. With a maximum surge current capacity of 10A, it provides robust switching capabilities for a variety of industrial automation tasks. Both modules feature front-panel LED indicators for quick and easy channel and module status diagnostics.
Technical Specifications:
- Brand: Allen-Bradley
- Product Series: SLC 500
- Models: 1746-NI8 (Analog Input) / 1746-OW8 (Relay Output)
- 1746-NI8 Channels: 8 Analog Inputs
- 1746-NI8 Input Ranges: -10V DC to +10V DC (Voltage) / -20mA to +20mA (Current) – DIP Switch Selectable
- 1746-OW8 Channels: 8 Relay Outputs
- 1746-OW8 Contact Rating: 2A @ 240V AC / 0.5A @ 125V DC
- 1746-OW8 Max Surge Current: 10A
- 1746-OW8 Minimum Load: 10mA @ 5V DC
- Certifications: UL, CSA, CE, Class I Groups A, B, C, D (1746-NI8)

Allen-Bradley 1746-NI8 / 1746-OW8 SLC 500 PLC I/O Modules (Analog Input & Relay Output)
Upgrade your industrial automation system with the Allen-Bradley 1746-NI8 8-Channel Analog Input Module and 1746-OW8 8-Channel Relay Output Module. Designed specifically for the SLC 500 PLC series, these modules provide versatile voltage/current sensing and robust relay switching capabilities for reliable control and precision monitoring.






