The 1756-PA72 is a high-reliability AC power supply module from the Allen-Bradley ControlLogix family, engineered for demanding industrial automation environments. This unit converts 120/240V AC line power to a regulated 5.1V DC output at 10 Amps, providing robust backplane energy for up to 17 ControlLogix I/O modules in a single chassis. Its universal input range (85–264V AC, 47–63 Hz) ensures seamless integration across global facilities, while built-in power factor correction and surge suppression protect against line transients. The 1756-PA72 supports both standalone and redundant power configurations, with automatic load sharing for critical processes. Its front-panel LEDs deliver real-time status on input voltage, output current, and fault conditions, enabling rapid diagnostics. Designed for hot-swapping, the module can be replaced without powering down the system, minimizing production interruptions. Certified for use in Class I, Division 2 hazardous locations, this power supply is a cornerstone of ControlLogix scalability and uptime.
| Parameter |
Specification |
| Catalog Number |
1756-PA72 |
| Product Type |
AC Power Supply Module |
| Input Voltage Range |
85–264V AC (nominal 120/240V AC) |
| Input Frequency |
47–63 Hz |
| Input Current |
2.0 A at 120V AC, 1.0 A at 240V AC |
| Output Voltage |
5.1V DC ± 2% |
| Output Current |
10 A (continuous) |
| Output Power |
51 W |
| Backplane Current Capacity |
10 A at 5.1V DC |
| Maximum I/O Modules Supported |
17 (in a single chassis) |
| Redundancy Support |
Yes (parallel with 1756-PA72 or 1756-PB72) |
| Hot-Swappable |
Yes |
| Power Factor Correction |
Built-in (active PFC) |
| Surge Protection |
Yes (transient voltage suppression) |
| Status Indicators |
Input OK, Output OK, Fault (LEDs) |
| Operating Temperature |
0°C to +60°C (32°F to 140°F) |
| Storage Temperature |
-40°C to +85°C (-40°F to 185°F) |
| Relative Humidity |
5% to 95% non-condensing |
| Vibration Resistance |
2.0 g at 10–500 Hz |
| Shock Resistance |
30 g peak, 11 ms duration |
| Dielectric Withstand Voltage |
1500V AC for 1 minute (input to output) |
| Enclosure Type |
Open-style, chassis mount |
| Weight |
0.45 kg (1.0 lb) |
| Dimensions (H x W x D) |
139 mm x 35 mm x 127 mm (5.47 in x 1.38 in x 5.0 in) |
| Certifications |
UL 508, CSA C22.2 No. 142, CE, ATEX Zone 2, IECEx |
| Hazardous Location Rating |
Class I, Division 2, Groups A, B, C, D |
| Warranty |
Standard Allen-Bradley 2-year |
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22