1756-PA50 ControlLogix Standard power supply Compatible with various ControlLogix chassis

Manufacturer Rockwell Automation
Position 1756 Left side of the chassis
Dimensions 14.0 x 7.8 x 14.5 cm (5.51 x 3.07 x 5.71 inches)
Isolation voltage 250 V continuous voltage
Input voltage range 85-265 volts AC
Nom Input voltage 120/240 volts AC
The Allen-Bradley 1756-PA50 is a ControlLogix standard power supply. This power supply is primarily used to power ControlLogix racks, whether local or distributed I/O racks. It is mounted on the far left side of the case and has an input voltage range of 85-265VAC and is rated 120V/240VAC.

The 1756-PA50 is compatible with various ControlLogix chassis, such as the 1756-A4, 1756-A7, 1756-A10, 1756-A13, and 1756-A17. Compatible chassis versions include the A, B, and C series.

The 1756-PA50 has an input power requirement of 81 W/91VA @ 50 °C (122 °F) 68 W/77VA @ 60 °C (140 °F) and a maximum output power of 60 W @ 0-50 °C (+32... +122 °F) and 50 W @ 0-60 °C (+32... +140 °F), capable of withstanding A 20 A surge current rating.

The current capacity of 1756-PA50 at 1.2V is 1.5A; 2A at 3.3V; 8 A@ 50 °C (122 °F) 6 A@ 60 °C (140 °F) (5.1V and 2.5A@ 50 °C (122 °F) 2.0 A@ 60 °C (140 °F) (24V) Isolation voltage rating of 250V (continuous), Reinforced insulation type, power input to backplane type test @ 3150V DC 60 seconds.

The 1756-PA50 is designed for use as a system power supply. It cannot be used to provide voltage and power to electrical equipment, nor can it distribute output through terminal blocks. When connecting the input wire to this power supply module, the appropriate wire size is 2.5 mm square or 14 AWG solid or stranded copper wire with an insulation rating of 90 °C (194 °F), or higher, and an insulation thickness of 1.2 mm (3/64 inch).