The 1756-PB75 is a power supply module from Allen-Bradley's ControlLogix series. It is designed to provide power to the various components connected to a ControlLogix chassis, such as the PLC processors, I/O modules, and communication modules.

Here are some key features and specifications of the 1756-PB75 power supply module:

Power Output: The module offers a maximum output power of 75 Watts. This power is distributed to the connected modules within the ControlLogix chassis.

Input Voltage: The 1756-PB75 accepts an input voltage range of 100-240V AC. This allows the power supply to be used in different regions with varying AC power systems.

Redundancy Support: The power supply module supports redundancy for increased system reliability. By utilizing two power supply modules in a redundant configuration, one can act as a backup in case the other fails, ensuring uninterrupted power supply to the ControlLogix system.

Diagnostic LEDs: The module includes LEDs that indicate the status of the power supply, helping with troubleshooting and diagnostics.

Hot Swappable: The 1756-PB75 module is hot swappable, meaning it can be replaced while the system is running without causing downtime. This facilitates easier maintenance and reduces system interruptions.

Thermal Overload Protection: The power supply incorporates thermal overload protection mechanisms to safeguard against overheating and provide added system protection.