The 1756-PA75 ControlLogix AC Power Supply Module from Rockwell Automation is a high-capacity industrial AC chassis power supply designed to provide stable and efficient power distribution for advanced ControlLogix automation systems. Engineered for mission-critical industrial environments, the module delivers reliable backplane power to processors, communication modules, and high-density I/O assemblies operating within the same chassis.
Compared with earlier ControlLogix power supplies, the 1756-PA75 offers higher current capacity, improved power efficiency, and enhanced system support for large-scale automation architectures. It is widely used in automotive manufacturing, process automation, packaging systems, energy facilities, and heavy industrial production lines where continuous operation and power reliability are essential.
Its rugged industrial design and broad AC input compatibility make it a trusted power foundation for modern ControlLogix platforms.
Technical Specifications (Including Size & Weight)
| Parameter | Specification |
|---|---|
| Model | 1756-PA75 |
| 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 |
| Input Power Rating | 100 VA / 100 W |
| Maximum Output Power | 75 W |
| Current Capacity @ 1.2V DC | 1.5 A |
| Current Capacity @ 3.3V DC | 4 A |
| Current Capacity @ 5.1V DC | 13 A |
| Current Capacity @ 24V DC | 2.8 A |
| Maximum Inrush Current | 20–30 A |
| Hold-Up Time | Up to 20 cycles depending on input voltage |
| Isolation Voltage | 250V continuous |
| Mounting Position | Left side of ControlLogix chassis |
| Compatible Chassis | 1756-A4, A7, A10, A13, A17 |
| Wiring Requirement | 14 AWG copper wire recommended |
| Enclosure Type | Open-style |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Relative Humidity | 5%–95% non-condensing |
| Weight | ~0.95–1.0 kg |
Technical ratings and electrical performance are based on industrial distributor and manufacturer specifications.
Physical Dimensions
- Size (H × W × D): 145 × 112 × 140 mm
The compact chassis-mounted structure allows efficient cabinet integration while delivering high backplane current capacity for large automation systems.
Recommended Related Models
The 1756-PA75 is commonly deployed 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-PB75 DC power supply module
Popular Allen-Bradley ControlLogix Power Modules
Frequently used ControlLogix power supply modules include:
- 1756-PA75 AC power supply module
- 1756-PA72 standard AC power supply
- 1756-PB72 DC power supply module
- 1756-PB75 high-capacity DC power supply
- 1756-PSCA2 chassis adapter module
These modules support scalable ControlLogix automation infrastructures across a wide range of industries.
