Allen-Bradley 1756-PB50 ControlLogix DC Power Supply

Product Overview

The 1756-PB50 DC power supply is a reliable module from the Allen-Bradley ControlLogix series, delivering consistent 24V DC nominal input across industrial automation systems. With its 18–32V DC input range and 250V continuous isolation voltage, the 1756-PB50 supports stable power delivery to multiple I/O and communication modules.

This unit fits seamlessly into the left slot of the 1756 chassis, including 1756-A4, 1756-A7, and 1756-A17. Its robust design ensures continuous operation even during brief voltage dips, thanks to its built-in hold-up time capability. The module weighs only 1.7 lbs, offering a compact and efficient power solution for modern control environments.

Technical Specifications

• Manufacturer: Rockwell Automation

• Brand: Allen-Bradley

• Series: ControlLogix

• Part Number: 1756-PB50

• Module Type: Standard DC Power Supply

• Nominal Input Voltage: 24V DC

• Input Voltage Range: 18–32V DC

• Max Inrush Current: 30A

• Isolation Voltage: 250V Continuous

• Location: Left side of 1756 chassis

• Dimensions: 5.51 x 3.07 x 5.71 in (140 x 78 x 145 mm)

• Weight: 1.7 lbs (0.77 kg)

Key Features

The 1756-PB50 offers robust performance in environments up to 60°C, making it suitable for demanding industrial conditions. Its isolation voltage and current handling capability provide safe, uninterrupted power. Furthermore, compatibility across ControlLogix chassis series A, B, and C ensures flexible integration.

Applications

Engineers deploy the 1756-PB50 in large-scale automation systems requiring stable DC power for multiple I/O modules, controllers, and communication cards. Its compact size and dependable design reduce downtime and enhance overall system reliability.

FAQs

Q1: Is the 1756-PB50 compatible with older ControlLogix chassis?
Yes, it works with Series A, B, and C chassis, including 1756-A4 and 1756-A17.

Q2: What operating temperatures can the 1756-PB50 handle?
The module operates efficiently between 0°C and 60°C in standard industrial environments.

Q3: How quickly can I receive the 1756-PB50 after ordering?
We keep stock available, and depending on order size, shipping takes 3 days to 2 weeks via DHL or similar couriers.

Q4: What if the 1756-PB50 has quality issues?
We guarantee original factory-sealed units and accept returns within 30 days if problems arise.