The 1756-PA72 ControlLogix AC Power Supply Module from Rockwell Automation is a robust and industrial-grade AC power supply designed for ControlLogix chassis systems. Engineered to deliver stable backplane power distribution, this module supports demanding automation environments where system reliability, power efficiency, and long-term operational stability are essential.
The 1756-PA72 is widely deployed in manufacturing plants, process control systems, automotive production lines, energy facilities, and large-scale industrial automation applications. With support for a broad AC input range and high-output backplane capacity, it provides dependable power for ControlLogix processors, communication modules, and I/O modules operating within the same chassis.
Its durable design and proven ControlLogix compatibility make it a preferred power solution for mission-critical industrial systems.
Technical Specifications (Including Size & Weight)
| Parameter | Specification |
|---|---|
| Model | 1756-PA72 |
| Series | ControlLogix Power Supplies |
| Module Type | AC Power Supply Module |
| Input Voltage Range | 85–265V AC |
| Nominal Input Voltage | 120/240V AC |
| Input Frequency | 47–63 Hz |
| Maximum Input Power | 100 VA / 100 W |
| Maximum Output Power | 75 W @ 0–60°C |
| Current Capacity @ 1.2V DC | 1.5 A |
| Current Capacity @ 3.3V DC | 4 A |
| Current Capacity @ 5.1V DC | 10 A |
| Current Capacity @ 24V DC | 2.8 A |
| Inrush Current | 20 A maximum |
| Hold-Up Time | 5–6 cycles depending on input voltage |
| Isolation Voltage | 250V continuous |
| Mounting Position | Left side of ControlLogix chassis |
| Compatible Chassis | 1756-A4, A7, A10, A13, A17 series |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Relative Humidity | 5%–95% non-condensing |
| Wiring Requirement | 14 AWG copper wire recommended |
| Weight | ~1.0–1.2 kg |
Technical electrical specifications are based on official Rockwell Automation and industrial distributor documentation.
Physical Dimensions
- Size (H × W × D): 180 × 202 × 206 mm
The rugged housing is optimized for industrial control cabinets and integrates directly with ControlLogix chassis assemblies.
Recommended Related Models
The 1756-PA72 is frequently used together with:
- 1756-A4 / A7 / A10 chassis
- 1756-L71 / L73 ControlLogix processors
- 1756-EN2T EtherNet/IP communication modules
- 1756-IB16 digital input modules
- 1756-OB16 DC output modules
- 1756-PB72 DC power supply module
Popular Allen-Bradley ControlLogix Power Supplies
Commonly used ControlLogix power supply modules include:
- 1756-PA72 AC power supply module
- 1756-PA75 high-capacity AC power supply
- 1756-PB72 DC power supply module
- 1756-PB75 high-capacity DC power supply
- 1756-PSCA2 chassis adapter module
These power supplies support scalable ControlLogix system architectures across multiple industries.
