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- Allen Bradley
- 1746-OW8
- PLC Module/Rack
- USA
- 145 × 35 × 140 mm
- 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.
Brand new and original
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-OW8 Detailed Technical Overview
1. Product Overview
The Allen-Bradley 1746-OW8 is an 8-point relay output module designed for the SLC 500 PLC system. It provides dry-contact relay switching, allowing it to control both AC and DC loads directly.
This module is widely used in industrial automation systems where flexible voltage switching is required. Each output channel is a normally open relay contact, making it suitable for mixed-voltage applications without the need for additional interface relays.
The 1746-OW8 is known for its simplicity, electrical isolation, and strong load flexibility, making it a common choice for compact PLC output expansion.
2. Brand Information
- Brand: Allen-Bradley
- Industry: Industrial automation and PLC systems
- Product Type: Relay output module
The brand is widely used in manufacturing and process industries due to its reliability, long service life, and strong PLC ecosystem compatibility.
3. Product Series
- Series: SLC 500
- Category: Digital output module
- Type: Relay contact output module
The SLC 500 system is a modular PLC platform. The 1746-OW8 belongs to its relay-based output family designed for high-voltage and mixed-load switching applications.
4. Technical Parameters
Core Specifications Table
| Parameter | Value |
|---|---|
| Model | 1746-OW8 |
| Module Type | Relay Output Module |
| Series | SLC 500 |
| Number of Outputs | 8 |
| Output Type | Normally Open relay contacts |
| Output Groups | 2 groups (4 points each) |
| Switching Voltage Range | 5–265 VAC / 5–125 VDC |
| Nominal Load Voltage | 120/240 VAC typical |
| Continuous Current per Point | 1.5 A (AC) / 1.2 A (DC) |
| Maximum Current per Module | ~8 A total |
| Contact Type | Mechanical relay (Form A) |
| Relay Life Cycle | ~100,000 operations (full load) |
| Turn-On Time | ~10 ms |
| Turn-Off Time | ~10 ms |
| Backplane Current (5V) | ~85–185 mA |
| Isolation Voltage | 1500 V AC |
| Leakage Current | None (mechanical contact) |
| Load Type | AC / DC resistive and inductive loads |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Relative Humidity | 5–95% non-condensing |
| Dimensions (mm) | 145 × 35 × 140 |
| Weight (kg) | ~0.20 – 0.45 kg |
5. Product Functions and Applications
Functional Description
- Provides relay-based switching for AC and DC loads
- Enables direct control of high-voltage devices
- Offers strong electrical isolation between PLC and field devices
- Supports mixed-voltage industrial control systems
- Replaces external interposing relays in many applications
Typical Applications
- Industrial automation control panels
- Motor starters and contactor control circuits
- HVAC control systems
- Lighting control systems
- Alarm and safety systems
- Mixed AC/DC load switching applications
- Machine control panels
6. Product Advantages
1. Universal Voltage Switching
Capable of switching both AC and DC loads in one module.
2. Strong Electrical Isolation
Relay contacts provide complete galvanic isolation.
3. Simple Integration
Direct compatibility with SLC 500 PLC racks.
4. Flexible Load Handling
Suitable for inductive and resistive loads.
5. Cost-Effective Expansion
Reduces need for external relay banks in control cabinets.
7. Recommended Models (Same Series or Related)
SLC 500 Series Related Modules
| Model | Type | Channels | Signal Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1746-OW16 | Relay Output | 16 | AC/DC Relay | 251 × 171 × 54 | 0.53 |
| 1746-OW8E | Relay Output | 8 | Enhanced Relay | 145 × 35 × 140 | 0.42 |
| 1746-OB8 | DC Output | 8 | 24V DC | 145 × 35 × 140 | 0.39 |
| 1746-OB16 | DC Output | 16 | 24V DC | 145 × 35 × 140 | 0.34 |
| 1746-OV16 | DC Output | 16 | Sinking | 145 × 35 × 140 | 0.48 |
8. Recommended Popular Models (Same Brand)
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