The Allen-Bradley 1756-PB72 is a robust, field-proven power supply module specifically engineered for the ControlLogix platform, operating on a 24V DC input to deliver a steady 10A of backplane current. This unit is the backbone of medium-to-large automation systems, providing clean, isolated power to processors, communication modules, and I/O cards within the same chassis. Its rugged design ensures stable operation even in electrically noisy industrial environments, with built-in overcurrent and overvoltage protection to safeguard critical control hardware. The 1756-PB72 supports hot-swappable replacement, meaning it can be exchanged without powering down the entire rack—a vital feature for continuous process industries like oil & gas, water treatment, or manufacturing lines.
| Parameter |
Specification |
| Product Type |
ControlLogix Power Supply Module |
| Model Number |
1756-PB72 |
| Input Voltage |
24V DC (nominal), range 18-32V DC |
| Input Current |
5.0 A maximum at 24V DC |
| Backplane Output Current |
10 A at 5V DC (isolated), 1.2 A at 24V DC (isolated) |
| Output Power |
50 W typical |
| Chassis Compatibility |
1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17, 1756-A20, 1756-A25 (ControlLogix standard chassis) |
| Slot Width |
Single slot (1.2 inches / 30.5 mm) |
| Isolation |
1500V DC input to backplane |
| Protection |
Overcurrent, overvoltage, reverse polarity |
| LED Indicators |
Input OK (green), Backplane OK (green), Fault (red) |
| 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 |
| Certifications |
UL 508, CSA C22.2 No. 142, CE, ATEX (Zone 2), cULus |
| Weight |
Approx. 0.45 kg (1.0 lb) |
| Shipping Weight |
Approx. 0.55 kg (1.2 lb) with packaging |
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