Allen-Bradley 1769-PB4 Power Supply

1. General Description

People also call the Allen-Bradley 1769-PB4 Power Supply the 1769 PB4 or AB 1769 PB4. A Compact I/O power supply exists. This power supply serves CompactLogix and 1769 Compact systems.

People also call it the Allen-Bradley 1769-PB4 Compact I/O Power Supply. People also know it as the CompactLogix 1769-PB4 or the Allen-Bradley 1769-PB4 CompactLogix Power Supply. A 24V DC power supply with a 4A output is available. Catalogs list it as the Allen-Bradley CompactLogix 1769 4A Power Supply 24V DC.

The 1769-PB4 CompactLogix power supply features dual output, supporting a wide range of Compact I/O modules. Its small size and reliable performance make it great for modern industrial automation. You can mount it on a DIN rail, and it operates in temperatures from 0 to 60 degrees Celsius.

2. What is the heat dissipation of the 1769-PB4?

The 1769-PB4 power supply has a heat dissipation of approximately 14.5 W at 60°C, matching industrial temperature requirements.

3. How much power does a 1769-PB4 use?

The Allen Bradley 1769-PB4 uses a 24V DC input, drawing up to 100 VA (≈100 W) at full load.

 It supplies:

l 5 V DC at 4 A

l 24 V DC at 2 A

The system shares the available current across the left and right Compact I/O modules.

 Maximum inrush is ~30 A at 31.2 V.

 Input operating range: 19.2–31.2 V DC.

 Thermal dissipation: 14.5 W at 60°C.

For installation, fuse, and wiring guidelines, consult Rockwell Automation datasheets.

4. Technical Specifications and Features

l Input Voltage Range: 19.2 – 32 V DC

l Output Voltage: 5 V DC at 4 A, 24 V DC at 2 A

l Dimensions: 4.4 in x 2.8 in x 3.4 in

l Weight: ~525 g (1.16 lb)

l Dual Output: Supports various compact I/O modules

l Compact Design: Fits tight control panel spaces

l High Efficiency: Reduced heat generation

l Durable Build: Suitable for harsh industrial settings

l Compatibility: Works with a broad range of CompactLogix 1769-PB4 and 1769 compact modules

l Mounting Options: Supports DIN rail or panel mounting

5. Applications of 1769 pb4 power supply

The Allen-Bradley 1769-PB4 (or Allen Bradley 1769-pb4) is widely used in:

l Manufacturing

l Machine automation

l Process control

It can support up to eight I/O modules on each side. This makes it a flexible power source for CompactLogix and 1769 compact I/O systems.

6. Installation Details of 1769 pb4 allen bradley

l Preparation: Disconnect power

l Mounting: Install on DIN rail or panel mounting surface

l Wiring: Connect input power and ground properly

l Integration: Place adjacent Compact I/O modules within distance rating

l Testing: Restore power and verify output voltages

7. Related Part Numbers of allen bradley 1769 pb4

l 1769-PB2 – Similar unit with different output

l 1769-PB4K – Factory-sealed version of the PB4 model

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