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- Allen Bradley
- 1746-OA8
- PLC Module/Rack
- USA
- 129 × 35 × 118
- 0.45kg
- Xiamen, China
- New & In Stock
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We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
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Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Allen-Bradley 1746-OA8 Detailed Technical Overview
1. Product Overview
The Allen-Bradley 1746-OA8 is an 8-point AC digital output module designed for the SLC 500 PLC system. It is used to switch AC loads such as relays, solenoids, indicator lamps, and small motor starters directly from PLC control logic.
The module uses TRIAC-based solid-state switching technology, allowing silent and wear-free operation compared to mechanical relays. It is commonly installed in industrial control panels where reliable AC switching is required.
The output channels are grouped into two isolated sets, improving electrical protection and system stability.
2. Brand Information
- Brand: Allen-Bradley
- Industry: Industrial automation and PLC systems
- Product Type: AC digital output module
The brand is widely used in factory automation systems due to its strong reliability, long lifecycle, and stable performance in industrial environments.
3. Product Series
- Series: SLC 500
- Category: Digital output module
- Type: AC TRIAC output module
The SLC 500 platform is a modular PLC system. The 1746-OA8 is designed for AC output control applications requiring multiple switching points in a compact module.
4. Technical Parameters
Core Specifications Table
| Parameter | Value |
|---|---|
| Model | 1746-OA8 |
| Module Type | AC Digital Output |
| Series | SLC 500 |
| Number of Outputs | 8 |
| Output Configuration | 2 groups × 4 points |
| Output Type | TRIAC (solid-state AC switch) |
| Output Voltage Range | 85–264 VAC |
| Nominal Voltage | 120 / 240 VAC |
| Frequency Range | 47–63 Hz |
| Output Current (per point) | ~2 A max |
| Output Current (module total) | ~8 A max |
| Leakage Current (OFF state) | ≤2 mA |
| Turn-on Time | ~9 ms |
| Turn-off Time | ~9 ms |
| Backplane Current (5V) | ~85–185 mA |
| Isolation Voltage | up to 1500 VAC |
| Load Type | Resistive / inductive AC loads |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Dimensions (mm) | 129 × 35 × 118 |
| Weight (kg) | 0.35–0.45 kg |
5. Product Functions and Applications
Functional Description
- Converts PLC digital signals into AC switching outputs
- Controls external AC devices such as solenoids and relays
- Provides group isolation for improved electrical protection
- Enables high-density switching in compact PLC racks
- Supports continuous industrial AC load control
Typical Applications
- Industrial automation production lines
- Conveyor and packaging machinery control
- AC motor starter and relay switching systems
- Factory lighting control systems
- Process automation requiring multiple AC outputs
- General-purpose industrial switching circuits
6. Product Advantages
1. High Channel Density
Eight output channels in one module reduce wiring and panel space requirements.
2. Solid-State Switching
TRIAC design eliminates mechanical wear and increases service life.
3. Fast Switching Response
Millisecond-level switching supports real-time control operations.
4. Electrical Isolation
Grouped output isolation improves system safety and reduces interference risk.
5. Stable Industrial Performance
Designed for continuous operation in harsh industrial environments.
7. Recommended Models (Same Series or Related)
SLC 500 Series Related Modules
| Model | Type | Channels | Signal Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1746-OB8 | DC Output | 8 | 24V DC | 145 × 35 × 140 | 0.30 |
| 1746-OB16 | DC Output | 16 | 24V DC | 145 × 35 × 140 | 0.34 |
| 1746-OB32 | DC Output | 32 | 24V DC | 145 × 35 × 140 | 0.36 |
| 1746-OW8 | Relay Output | 8 | AC/DC Relay | 145 × 35 × 140 | 0.40 |
| 1746-OV16 | DC Output | 16 | Sinking DC | 145 × 35 × 140 | 0.35 |
8. Recommended Popular Models (Same Brand)
Popular Automation Modules
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| 1756-L73 | Controller | — | 5V DC | 150 × 140 × 130 | 0.36 |
| 1769-L36ERM | Compact Controller | — | 24V DC | 120 × 90 × 70 | 0.30 |
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| 1769-OF8C | Analog Output | 8 | 0–10 V | 118 × 87 × 35 | 0.30 |
| 1756-EN2T | Ethernet Module | — | 5V DC | 150 × 140 × 130 | 0.32 |