Allen-Bradley | 1746-OA16 | SLC 500 (1746 Series)

Product Description: Allen-Bradley 1746-OA16

The Allen-Bradley 1746-OA16 is a 16-point digital output module designed for use in SLC 500 systems. It features triac-based outputs suitable for switching AC loads such as contactors, pilot lights, and alarms. Each output operates at 120/240V AC and is grouped electrically, making it ideal for applications requiring high-density AC control in industrial environments.

Key Features

• 16 AC output channels (triac switching)
• Supports 85–265V AC loads at 47–63 Hz
• Outputs grouped into two commons (8 points per group)
• Compatible with SLC 500 chassis and processors
• Per-channel LED indicators for status monitoring
• Solid-state switching provides long service life and silent operation
• Removable terminal block for convenient wiring

Technical Specifications

• Number of Outputs: 16
• Output Type: Triac (AC only, non-isolated channels)
• Voltage Range: 85–265V AC
• Frequency: 47–63 Hz
• Maximum Output Current:
  • 0.5 A per channel (resistive load)
• Minimum Load: 10 mA @ 85V AC
• Surge Current: 10 A for 0.5 cycle (repeatable every 2 seconds)
• Isolation Voltage: 1500V AC (backplane to field; not between channels)
• Backplane Current Draw:
  • 95 mA @ 5V DC
• Operating Temperature: 0°C to 60°C
• Certifications: UL Listed, CE, CSA, RoHS, Class I Div 2

Application Areas

• Industrial control panels requiring AC load switching
• Building automation and lighting systems
• Factory automation with pilot devices or alarms
• HVAC and utility control systems
• OEM systems using grouped AC outputs

Advantages

• High-density AC output in a compact footprint
• Triac design ensures long life and quiet operation
• Simplified wiring with removable terminal block
• Channel status LEDs aid in quick diagnostics
• Full integration with the SLC 500 platform