1756-PB72 ControlLogix DC Power Supply 24V 75W | Allen-Bradley

The Original New Allen-Bradley 1756-PB72 is a standard DC input power supply module for the ControlLogix 1756 chassis system. It converts 24V DC nominal input into regulated DC power for the chassis backplane, supplying 1.2V, 3.3V, 5.1V, and 24V DC to power ControlLogix controllers, I/O modules, and communication modules. Mounting directly on the left side of the 1756 chassis, it delivers 75W total output power with overcurrent, overvoltage, and short-circuit protection. Series A and B chassis compatible. 0°C to 60°C operating temperature. Active product.

Core Engineering Highlights:
24V DC nominal input (18-32V range) | 75W output power | 10A @ 5.1V DC | 2.8A @ 24V DC | 95W max input power | 30A max inrush current | 250V isolation (tested 3500V DC) | 0-60°C operating temperature | Chassis mount | Series A/B/C chassis compatible

Key Features:

• Original New Allen-Bradley 1756-PB72 module

• 24V DC nominal input with 18-32V DC wide operating range

• 75W maximum output power @ 0-60°C (32-140°F)

• Multi-voltage DC outputs: 10A @ 5.1V, 4A @ 3.3V, 2.8A @ 24V, 1.5A @ 1.2V

• Max input power: 95W

• Inrush current: 30A max

• Hold-up time: 35ms @ 18V DC, 40ms @ 24V DC and 32V DC

• Isolation voltage: 250V continuous, Reinforced Insulation Type, Power Input to Backplane; type tested at 3500V DC for 60s

• Mounts directly on the left side of the 1756 ControlLogix chassis

• Compatible with Series A, B, and C ControlLogix chassis

• Status LED display for power and diagnostic indication

• Chassis mounting with open-style enclosure (IP20 equivalent)

• Overcurrent, overvoltage, and short-circuit protection

• Hot-swappable, redundant-capable design

• Conformal coated version available for harsh environments (1756-PB72K)

Applications:

• Rack power supply for ControlLogix 1756 chassis systems

• Powering ControlLogix controllers, I/O modules, and communication modules

• DC-powered industrial automation control panels and machine control systems

• Standard DC-powered ControlLogix installations

• Redundant power supply configurations for critical applications

Technical Specifications:

General

• Catalog Number: 1756-PB72

• Product Type: ControlLogix Standard DC Power Supply

• Series: Series B (Series A and C compatible)

• Mounting: Left side of 1756 ControlLogix chassis

• Enclosure Type: Open-style (IP20 equivalent)

• Weight: Approx. 0.94 kg (2.06 lbs)

Input

• Nominal Input Voltage: 24V DC

• Input Voltage Range: 18-32V DC

• Max Input Power: 95W

• Inrush Current, Max: 30A

Output

• Output Power, Max: 75W @ 0-60°C

• Hold-up Time: 35ms @ 18V DC; 40ms @ 24V DC and 32V DC

• Current Capacity:

  • @ 1.2V DC: 1.5A

  • @ 3.3V DC: 4A

  • @ 5.1V DC: 10A

  • @ 24V DC: 2.8A

Isolation & Protection

• Isolation Voltage: 250V continuous, Reinforced Insulation Type

• Isolation Test Voltage: Type tested at 3500V DC for 60s, Power Input to Backplane

• Protection: Overcurrent, overvoltage, short-circuit protection

Physical

• Dimensions (H x W x D): 140 x 78 x 145 mm (5.51 x 3.07 x 5.71 in.)

• Chassis Compatibility: 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17 (Series A, B, and C)

Environmental

• Operating Temperature: 0°C to 60°C (32°F to 140°F)

• Storage Temperature: –40°C to 85°C

• Relative Humidity: 5% to 95% non-condensing

• Vibration: 2G @ 10-500 Hz

• Shock: 30G operating

System Compatibility:

• Rockwell Automation ControlLogix 1756 chassis: 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17

• Series A, B, and C chassis

• ControlLogix 1756 controllers

• GuardLogix safety controllers

• 1756 I/O modules, communication modules, and specialty modules

• Standard ControlLogix systems (non-redundant)

Certifications:
CE, CSA, cULus, KC, MARINE, RCM, UL
UL Listed (File E10314), CSA Certified (File LR62262)

Related Products:

• 1756-PB72K – Conformal coated version for harsh environments

• 1756-PB75 – 24V DC input version with 13A @ 5.1V (higher capacity)

• 1756-PA72 – 120/240V AC input version (10A @ 5.1V)

• 1756-PA75 – 120/240V AC input version with 13A @ 5.1V

• 1756-PA50 – Slim AC power supply (lower capacity)

• 1756-PB50 – Slim DC power supply (lower capacity)

• 1756-PA30XT – ControlLogix-XT slim AC power supply for harsh environments

• 1756-PAR2 – Redundant power supply kit for critical applications

• 1756-A4 / 1756-A7 / 1756-A10 / 1756-A13 / 1756-A17 – ControlLogix chassis options

PLC ERA is an independent industrial automation distributor supplying 100% genuine Original New products through established global supply channels. Allen-Bradley, ControlLogix, and GuardLogix are trademarks of Rockwell Automation.