1756-PB75 | Allen Bradley | ControlLogix Series | 24VDC Standard Power Supply

Product Description

The 1756-PB75 power supply from Allen Bradley’s ControlLogix series delivers stable DC power for chassis-mounted modules. Designed for installation on the left side of the chassis, it ensures reliable operation across a wide voltage range and supports both Series B and Series C chassis. With reinforced insulation and tested isolation, it provides dependable performance in demanding industrial automation environments.

Technical Specifications

• Manufacturer: Allen Bradley

• Product Line: ControlLogix

• Part Number: 1756-PB75

• Category: PLC Power Supply

• Module Type: Standard Power Supply

• Weight: 2.19 lbs (0.99 kg)

• Mounting Location: Left side of ControlLogix chassis

• Nominal Input Voltage: 24 VDC

• Input Voltage Range: 18–32 VDC

• Input Power: 95 W

• Output Power: 75 W (0–60 °C / 32–140 °F)

• Current Capacity:

• 1.5 A @ 1.2 VDC

• 4 A @ 3.3 VDC

• 13 A @ 5.1 VDC

• 2.8 A @ 24 VDC

• Isolation Voltage: 250 V continuous, reinforced insulation; type-tested at 3500 VDC for 60 s

• Maximum Inrush Current: 30 A

• Hold-Up Time:

• 35 ms @ 18 VDC

• 40 ms @ 24 VDC

• 40 ms @ 32 VDC

• Backplane Current Draw:

• 10 A @ 5 VDC

• 2.8 A @ 24 VDC

• Chassis Compatibility: 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17

• Chassis Series: Series B and Series C

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

• Storage Temperature: –40–85 °C (–40–185 °F)

• Enclosure Type: Open-style

Key Features

• Provides regulated DC power for ControlLogix modules.

• Reinforced insulation and tested isolation for safety.

• Wide input voltage range for flexible installation.

• Compact design for left-side chassis mounting.

• Compatible with multiple chassis sizes and series.

Application Scenarios

• Powering ControlLogix PLC systems in manufacturing automation.

• Industrial environments requiring stable 24 VDC supply.

• Legacy and modern ControlLogix installations needing reliable power distribution.

FAQ

Q: What is the maximum output power of the 1756-PB75?   A: It delivers up to 75 W at operating temperatures up to 60 °C.

Q: Which chassis models are supported?  A: Compatible with 1756-A4, A7, A10, A13, and A17 chassis.

Q: How does this compare to the 1756-PB72?  A: The 1756-PB75 offers higher current capacity and output power compared to the 1756-PB72, making it suitable for larger systems.