The 1756-OX8I ControlLogix Relay Output Module from Rockwell Automation is a compact and reliable 8-point isolated relay output module designed for industrial automation systems requiring flexible voltage switching, electrical isolation, and dependable relay-based control.
Built for applications where both AC and DC loads must be controlled within the same automation platform, the 1756-OX8I offers excellent versatility for operating contactors, solenoids, alarm devices, pilot lights, and industrial actuators. Its isolated relay design improves system protection and minimizes electrical interference between field circuits.
This module is particularly suitable for industrial environments that demand stable switching performance and broad load compatibility.
Technical Specifications (Including Size & Weight)
| Parameter | Specification |
|---|---|
| Model | 1756-OX8I |
| Series | ControlLogix Relay Output Modules |
| Module Type | 8-Point Isolated Relay Output Module |
| Number of Outputs | 8 relay outputs |
| Output Type | Mechanical relay contacts |
| Contact Configuration | Normally open relay outputs |
| Supported Voltage Range | 5–265V AC / 5–125V DC |
| Isolation Type | Individually isolated relay groups |
| Continuous Current per Point | 2 A per channel |
| Minimum Load Current | 10 mA |
| Contact Rating | Industrial-grade relay contacts |
| Switching Time | ON: ~10 ms / OFF: ~15 ms |
| Isolation Voltage | 250V continuous |
| Backplane Current (5.1V DC) | ~120–150 mA |
| Power Dissipation | ~3–5 W |
| Field Wiring Requirement | Standard industrial relay wiring |
| Terminal Block | 1756-TBSH / 1756-TBNH |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Relative Humidity | 5%–95% non-condensing |
| Weight | ~0.35–0.50 kg |
Physical Dimensions
- Size (H × W × D): 145 × 35 × 140 mm
The compact single-slot design allows efficient installation inside standard ControlLogix chassis systems while supporting flexible industrial load control.
Recommended Related Models
The 1756-OX8I is commonly paired with:
- 1756-IB8 digital input module
- 1756-OW16I 16-point relay output module
- 1756-OB8 DC transistor output module
- 1756-OA8 AC output module
- 1756-L71 / L73 ControlLogix controllers
- 1756-EN2T EtherNet/IP communication modules
Popular Allen-Bradley Relay & Output Modules
Commonly deployed ControlLogix output modules include:
- 1756-OX8I isolated relay output module
- 1756-OW16I 16-point relay output module
- 1756-OB16 DC transistor output module
- 1756-OV16E electronically fused output module
- 1756-OA16 AC output module
These modules provide scalable and flexible industrial output control solutions.
