1756-P75

Overview of Allen Bradley 1756-PB75

The Allen Bradley 1756-PB75 is a 24V DC power supply designed for ControlLogix chassis, offering reliable performance for industrial automation systems. With an input voltage range of 18–32V DC and 75W output at temperatures up to 60°C, this standard power supply delivers stable power to all modules installed in a single chassis. Its design supports a variety of automation applications, ensuring enough backplane current for demanding I/O, communication, or processor modules. Engineered to withstand harsh industrial environments, the 1756-PB75 features reinforced insulation and reliable hold-up time for transient voltage dips, sustaining system uptime and equipment reliability. The removable terminal blocks make wiring and maintenance more efficient, while clear status indicators help technicians quickly identify operating conditions or faults. Allen Bradley 1756-PB75 is an optimal choice for new installations or existing ControlLogix upgrades, ensuring compatibility across popular chassis sizes and series.

Key Features of Allen Bradley 1756-PB75

• Wide 18–32V DC input voltage range for flexibility with various DC power sources.
• Delivers 75W continuous output at up to 60°C for demanding system loads.
• Current rating: 1.5A at 1.2VDC, 4A at 3.3VDC, 13A at 5.1VDC, 2.8A at 24VDC.
• Continuous isolation voltage of 250V, tested for stringent safety standards.
• Status LED and removable terminal blocks streamline troubleshooting and installation.
• Compatible with all major ControlLogix chassis including 1756-A4, A7, A10, A13, and A17 (Series B/C).

Technical Specs of 1756-PB75

• Input Voltage Range: 18–32V DC
• Nominal Input: 24V DC
• Output Power: 75W up to 60°C
• Current Capacity: 1.5A (1.2VDC), 4A (3.3VDC), 13A (5.1VDC), 2.8A (24VDC)
• Isolation Voltage: 250V continuous, tested at 3500V DC for 60 seconds
• Hold-Up Time: 35–40ms depending on supply voltage
• Dimensions: 14.0 x 11.2 x 14.5 cm
• Weight: 0.95 kg
• Chassis Compatibility: 1756-A4, A7, A10, A13, A17 (Series B/C)
• Module Location: Left side of 1756 chassis

Applications / Use Case

Allen Bradley 1756-PB75 is ideal for powering ControlLogix automation systems in manufacturing, process control, and critical infrastructure. It serves industries such as automotive assembly, food and beverage, packaging, and material handling—where continuous operation and dependable power are vital. The module's stable 24V DC input and high current outputs support dense I/O configuration, fast processors, and complex control modules used in high-performance PLC setups. Use cases span from large process lines with distributed I/O to machine control panels operating in challenging electrical environments. The 1756-PB75’s compact footprint and flexible wiring make it suitable for both expansions and retrofits, helping engineers maintain uptime and safety while meeting growing application demands.

Related Resources

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