Allen-Bradley 1756-PA75R

ControlLogix AC Redundant Power Supply 85…265V AC

Read from the product label

Maker: Allen-Bradley
Part no.: 1756-PA75R
Serial / rev.: as printed on your unit

Image is for illustrative purposes only. Please refer to product description.

Delivery options

Allen-Bradley 1756-PA75R ControlLogix redundant AC power supply: 85…265V AC input, 75 W at 0…60 °C, 13 A at 5.1V.

Manufacturer: Allen-Bradley
Manufacturer part no.: 1756-PA75R
Product family: ControlLogix Chassis and Power Supplies (1756)
Type: Rack power supply
Weight: approx. 1.45 kg (3.2 lb)
Category: PLCs and I/O › Rack power supplies
Lifecycle: Active
OEM successor: Not stated
Technical datasheet: Data sheet

Technical specifications

Manufacturer: Allen-Bradley
Manufacturer part no.: 1756-PA75R
Type: Rack power supply
Application: ControlLogix chassis power
Used with: 1756 ControlLogix chassis
Input voltage range: 85…265V AC
Input voltage: 120V/240V AC, 50/60 Hz
Input frequency range: 47…63 Hz
Input power, max: 120VA 115 W
Output power, max: 75 W @ 0…60 °C (32…140 °F)
Inrush current, max: 20 A
Hold up time: 2 cycles @ 60 Hz 2 cycles @ 50 Hz
Current capacity @ 1.2V: 1.5 A
Current capacity @ 3.3V: 4 A
Current capacity @ 5.1V: 13 A
Current capacity @ 24V: 2.8 A
Annunciator power: 240V AC 50/60 Hz, 240V DC, 50 mA, resistive only
Isolation voltage: 250V (continuous), Reinforced Insulation Type, Power Input to Backplane, Power Input to Annunciator, Annunciator to Backplane, Type tested at 3250V DC for 60 s
Dimensions (HxWxD), approx: 17.5 x 14.5 x 13.7 cm (6.9 x 5.7 x 5.4 in.)
Weight, approx: 1.45 kg (3.2 lb)
Wire size: Power: 2.5 mm2 (14 AWG) solid or stranded copper wire that is rated at 90 °C (194 °F), or greater, 1.2 mm (3/64 in.) insulation max, Annunciator: 0.25…2.5 mm2 (22…14 AWG) solid or stranded copper wire that is rated at 90 °C (194 °F), or greater, 1.2 mm (3/64 in.) insulation max
Wire category: 3 - on annunciator ports 1 - on power ports 3 - on 1756-CPR2 connections
Pilot duty rating: Annunciator - not rated
Conductor screw torque: 0.565 Nm (5 lbin)
North American temperature code: T3C
Enclosure type rating: None (open-style)
Temperature, operating: 0…60 °C (32…140 °F)
Temperature, surrounding air, max: 60 °C 140 °F)
Temperature, nonoperating: -40…+85 °C (-40…+185 °F)
Relative humidity: 5…95% noncondensing

Show all 40 specifications

Vibration: 2 g @ 10…500 Hz
Shock, operating: 30 g
Shock, nonoperating: 50 g
Emissions: IEC 61000-6-4
ESD immunity: 6 kV contact discharges 8 kV air discharges
EFT/B immunity: ±4 kV at 5 kHz on power ports ±4 kV at 5 kHz on annunciator ports
Surge transient immunity: ±1 kV line-line (DM) and ±2 kV line-earth (CM) on power ports
Conducted RF immunity: 15V rms with 1 kHz sine wave 80% AM from 150 kHz…80 MHz
Conducted audio immunity: 2 W max from rated frequency to the 200th harmonic on AC supply ports
Voltage variation: 30% dips for 1 period at 0° and 180° on AC supply ports 60% dips for 5 and 50 periods on AC supply ports ±10% fluctuations for 15 min on AC supply ports >95% interruptions for 250 periods on AC supply ports

Technical documents (1)

Rockwell Automation technical data 1756-TD005

Key features

Redundant power supply for ControlLogix systems
Input frequency range of 47…63 Hz
Output current at 1.2V, 3.3V, 5.1V and 24V
Annunciator rated 50 mA, resistive only
Reinforced insulation type isolation, 250V continuous

About the Allen-Bradley 1756-PA75R

The 1756-PA75R is a ControlLogix 85-265 VAC redundant power supply (technical data 1756-TD005). Input is 85…265V AC at 47…63 Hz, and maximum output is 75 W at 0…60 °C. Current capacity is 1.5 A at 1.2V, 4 A at 3.3V, 13 A at 5.1V and 2.8 A at 24V.

What is the 1756-PA75R used for?

It is used in pairs to power a ControlLogix chassis redundantly, so the system keeps running if one supply fails. An annunciator connection, rated 50 mA resistive only, reports its status. It is open-style and works from 0…60 °C.

Lifecycle and successor

Active (Rockwell Automation lifecycle status, checked 24 October 2026).

Before you order

What to photograph or confirm so the right unit is quoted.

Read the catalog number 1756-PA75R, the series letter and the firmware revision from the label. Send us a photo of the label and we confirm the match before we quote.

Other parts in the Allen-Bradley ControlLogix Chassis and Power Supplies family

Listed for reference. They differ from the 1756-PA75R in rating, supply, interface or function and are not interchangeable with it unless Allen-Bradley says so. Match the part number on your unit.

Product	Type	Lifecycle	Qty Available	Price	Action
Allen-Bradley 1756-A10ControlLogix 10 Slot Chassis, Horizontal Panel Mount	Chassis	Active	On request	On request	View
Allen-Bradley 1756-A13ControlLogix 13 Slot Chassis	Chassis	Active	On request	On request	View
Allen-Bradley 1756-A4ControlLogix 4 Slot Chassis, Horizontal Mounting	Chassis	Active	On request	On request	View
Allen-Bradley 1756-A7ControlLogix 7 Slot Chassis for Panel Mounting	Chassis	Active	On request	On request	View
Allen-Bradley 1756-PA72ControlLogix AC Power Supply 85 to 265V AC	Rack power supply	Active	On request	On request	View
Allen-Bradley 1756-PA75ControlLogix AC Power Supply 85 to 265V AC	Rack power supply	Active	On request	On request	View
Allen-Bradley 1756-PB72ControlLogix 24V DC Power Supply Module	Rack power supply	Active	On request	On request	View
Allen-Bradley 1756-PB75ControlLogix 24V DC Power Supply	Rack power supply	Active	On request	On request	View

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