1746-P2 | Allen-Bradley SLC 500 Rack Mount Power Supply 120/240V AC 5A, Series C
1746-P2 | Allen-Bradley SLC 500 Rack Mount Power Supply 120/240V AC 5A, Series C
1746-P2 | Allen-Bradley SLC 500 Rack Mount Power Supply 120/240V AC 5A, Series C
1746-P2 | Allen-Bradley SLC 500 Rack Mount Power Supply 120/240V AC 5A, Series C
1746-P2 | Allen-Bradley SLC 500 Rack Mount Power Supply 120/240V AC 5A, Series C
1746-P2 | Allen-Bradley SLC 500 Rack Mount Power Supply 120/240V AC 5A, Series C
    1746-P2 | Allen-Bradley SLC 500 Rack Mount Power Supply 120/240V AC 5A, Series C
    1746-P2 | Allen-Bradley SLC 500 Rack Mount Power Supply 120/240V AC 5A, Series C
1746-P2 | Allen-Bradley SLC 500 Rack Mount Power Supply 120/240V AC 5A, Series C
1746-P2 | Allen-Bradley SLC 500 Rack Mount Power Supply 120/240V AC 5A, Series C

1746-P2 | Allen-Bradley SLC 500 Rack Mount Power Supply 120/240V AC 5A, Series C

Part #: 1746-P2 Manufactured by: Allen-Bradley
Regular price
$345.00
Sale price
$345.00
Regular price
16 in Stock
Condition: New-Surplus Original Box
Shipping calculated at checkout.
Product Overview
The Allen-Bradley 1746-P2 is a SLC 500 Power Supply. This Power Supply has an Input Voltage of 120/220 Volts AC and an Inp...  Read more
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Product Description P/N: 1746-P2

Description / Specifications

Description

The Allen-Bradley 1746-P2 is a SLC 500 Power Supply. This Power Supply has a nominal Input Voltage of 120/220 Volts AC. It has an internal Current capacity of 5 A at 5V dc 0.96 A at 24V dc. It provides a 24VDC voltage output with built-in fuse protection.

 

Technical Specifications 

Manufacturer Rockwell Automation
Brand Allen-Bradley
Part Number/Catalog No. 1746-P2
Series SLC 500
Module Type Power Supply
Input Power 70 Watts
Input Voltage 120 to 220 Volts AC
Typical line power requirement 180VA
Inrush Current 20 Amps
Backplane Current (5 Volts) 5 amps
Internal Current Capacity 5 A at 5V dc; 0.96 A at 24V dc
Output Voltage Range 18 to 30 Volts DC
CPU Hold up time 20 ms (full load) 3000 ms (no load)
Backplane Current (24 Volts) 0.46 Amps
Frequency 47 to 63 Hertz
Location 1746 Chassis
Dimensions 5.5 x 3.3 x 5.7 inches
Operating Temperature 0 to 60 Celsius
Fuse Protection 1746-F1 or equivalent

  

 

Information About 1746-P2

The Allen-Bradley 1746-P2 is an SLC 500 modular power supply. It comes with an input voltage of 85-132 or 170-265V AC at 47-63 Hz. Its internal current capacity at 5V is 5 A and it is 0.96 A at 24V. This power supply also comes with a maximum user-supplied overcurrent protection of 15 A and a maximum inrush current of 20 A. It has a 180 VA typical line power requirement and an input terminal and backplane isolation of 1800V AC RMS for 1 s. User-power current capacity at 24V DC is 200 mA and the user-power voltage range of the power supply, also at 24V DC, is 18-30V DC.

It has a maximum of two AWG wires per terminal. Fuse protection is present with the 1746-P2 power supply but it is limited to guarding against fire hazards due to short-circuit conditions. It comes with an open-type enclosure and can only be installed in a 1746 chassis. The entire power supply measures 5.5 x 2.9 x 5.7 inches and weighs 1.1 kg or 2.5 lbs. Its operating temperature is from 0-60 Deg. Celsius.

This power supply module has a jumper terminal that is used to set the input voltage to be applied to the device.

When undervoltage operation happens, the 1746-P2 power supply will continue to power up the SLC 500 controllers for a short period. When the power supply continues to receive input voltage that is lower than the recommended operating range for a period of time longer than the CPU hold-up time, the controllers will turn off. It will only resume operations automatically when the power supply receives the recommended operating input voltage.

For overcurrent conditions, the 1746-P2 Series A and B will undergo a power supply shutdown and CPU fault. The recovery procedure is to reload the user program. For the 1746-P2 Series C, it will have a 24V DC user shutdown but the CPU continues its operation and the recovery procedure is to correct the overcurrent condition.

The 1746-P2 is a Power supply module primarily designed for use with the SLC 500 automation system platform. This power supply is installed in the leftmost of the SLC chassis.

The installation location of this power supply is not included in the slot count. The slot counting starts with Slot Zero (0) which is reserved for the Programmable Logic Controller’s (PLC) processor or SLC 500 communication adapter.

When the front cover of the power supply is opened, the power supply’s front panel is exposed. This power supply has Five (5) terminals, jumper pins and internal fuse. These terminals are designed to accommodate AC line connection and DC power connection. One terminal function as ground terminal. The internal fuse has an equivalent part number replacement of 1746-F2. The jumper pins are used to set the correct input voltage setting, whether 100/120 VAC or 200 / 240 VAC.

Avoid electrical arc when working with the power supply. Disconnecting or connecting a wire with active supply may produce an electric arc which may damage the electronic backplane. It is important to perform operation when the input power is inactive. The power supply module itself is sensitive to voltage surges that may occur when starting high-inductive electrical loads. To avoid damage to the power supply module, isolation transformer may be installed to prevent voltage surges from entering the power supply.

This power supply features a hold-up time of 20 ms (full load) 3000 ms (no load). This feature allows the PLC processor to continue functioning even when power supply input voltage falls below the nominal supply level.

 

Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

Frequently Asked Questions about 1746-P2
Question: What is Allen-Bradley 1746-P2?
Date Update:26/05/2025
Answer:

The Allen-Bradley 1746-P2 is an industrial power supply module designed for the SLC 500 programmable logic controller (PLC) platform manufactured by Rockwell Automation. It provides regulated DC power (5V and 24V) to other modules in the 1746 chassis, such as CPU modules, I/O modules, and communication adapters. This power supply is mounted in the leftmost position of the chassis and features configurable input voltage settings (120/220V AC), internal fuse protection, and built-in terminals for wiring. It plays a critical role in ensuring stable and reliable operation of the entire SLC 500 automation system in industrial control applications.

Question: Can I wire more than one cable per terminal on the 1746-P2?
Date Update:26/05/2025
Answer:

Yes, the terminal block allows a maximum of two AWG wires per terminal. This feature is useful in scenarios where daisy-chaining or parallel connections are required in control panels. Care should be taken to use properly rated wire and ensure tight, clean connections to avoid electrical arcing. Always power down the unit before performing wiring to protect both the module and technician.

Question: What is the input voltage range for the Allen-Bradley 1746-P2?
Date Update:26/05/2025
Answer:

The Allen-Bradley 1746-P2 supports dual voltage operation. It accepts 85–132V AC or 170–265V AC at a frequency range of 47 to 63 Hz, allowing for global usage. A jumper setting inside the module lets you configure the unit for either 120V or 220V operation depending on your regional power standard. This flexibility ensures compatibility with a wide range of industrial power environments.

Question: Does the 1746-P2 power supply offer fuse protection?
Date Update:26/05/2025
Answer:

Yes, the 1746-P2 includes internal fuse protection to guard against short circuits and fire hazards. However, this fuse is not intended to protect against all types of electrical faults—it primarily mitigates the risk of overheating due to wiring failures. The recommended replacement fuse is the 1746-F1 or 1746-F2, depending on the series. Always replace fuses with the exact specified part to maintain safety and reliability.

Question: Is the Allen-Bradley 1746-P2 still in production?
Date Update:26/05/2025
Answer:

The Allen-Bradley 1746-P2 is no longer in active production by Rockwell Automation and has been moved to legacy product status. While it is no longer manufactured, many industrial suppliers still carry refurbished or surplus units. Customers using legacy SLC 500 systems continue to rely on the 1746-P2, and replacement parts are available from trusted distributors. It's advisable to plan for migration if long-term support and expansion are expected.

IQElectro is not an authorized distributor.
QElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description

The Allen-Bradley 1746-P2 is a SLC 500 Power Supply. This Power Supply has a nominal Input Voltage of 120/220 Volts AC. It has an internal Current capacity of 5 A at 5V dc 0.96 A at 24V dc. It provides a 24VDC voltage output with built-in fuse protection.

 

Technical Specifications 

Manufacturer Rockwell Automation
Brand Allen-Bradley
Part Number/Catalog No. 1746-P2
Series SLC 500
Module Type Power Supply
Input Power 70 Watts
Input Voltage 120 to 220 Volts AC
Typical line power requirement 180VA
Inrush Current 20 Amps
Backplane Current (5 Volts) 5 amps
Internal Current Capacity 5 A at 5V dc; 0.96 A at 24V dc
Output Voltage Range 18 to 30 Volts DC
CPU Hold up time 20 ms (full load) 3000 ms (no load)
Backplane Current (24 Volts) 0.46 Amps
Frequency 47 to 63 Hertz
Location 1746 Chassis
Dimensions 5.5 x 3.3 x 5.7 inches
Operating Temperature 0 to 60 Celsius
Fuse Protection 1746-F1 or equivalent

  

 

Information About 1746-P2

The Allen-Bradley 1746-P2 is an SLC 500 modular power supply. It comes with an input voltage of 85-132 or 170-265V AC at 47-63 Hz. Its internal current capacity at 5V is 5 A and it is 0.96 A at 24V. This power supply also comes with a maximum user-supplied overcurrent protection of 15 A and a maximum inrush current of 20 A. It has a 180 VA typical line power requirement and an input terminal and backplane isolation of 1800V AC RMS for 1 s. User-power current capacity at 24V DC is 200 mA and the user-power voltage range of the power supply, also at 24V DC, is 18-30V DC.

It has a maximum of two AWG wires per terminal. Fuse protection is present with the 1746-P2 power supply but it is limited to guarding against fire hazards due to short-circuit conditions. It comes with an open-type enclosure and can only be installed in a 1746 chassis. The entire power supply measures 5.5 x 2.9 x 5.7 inches and weighs 1.1 kg or 2.5 lbs. Its operating temperature is from 0-60 Deg. Celsius.

This power supply module has a jumper terminal that is used to set the input voltage to be applied to the device.

When undervoltage operation happens, the 1746-P2 power supply will continue to power up the SLC 500 controllers for a short period. When the power supply continues to receive input voltage that is lower than the recommended operating range for a period of time longer than the CPU hold-up time, the controllers will turn off. It will only resume operations automatically when the power supply receives the recommended operating input voltage.

For overcurrent conditions, the 1746-P2 Series A and B will undergo a power supply shutdown and CPU fault. The recovery procedure is to reload the user program. For the 1746-P2 Series C, it will have a 24V DC user shutdown but the CPU continues its operation and the recovery procedure is to correct the overcurrent condition.

The 1746-P2 is a Power supply module primarily designed for use with the SLC 500 automation system platform. This power supply is installed in the leftmost of the SLC chassis.

The installation location of this power supply is not included in the slot count. The slot counting starts with Slot Zero (0) which is reserved for the Programmable Logic Controller’s (PLC) processor or SLC 500 communication adapter.

When the front cover of the power supply is opened, the power supply’s front panel is exposed. This power supply has Five (5) terminals, jumper pins and internal fuse. These terminals are designed to accommodate AC line connection and DC power connection. One terminal function as ground terminal. The internal fuse has an equivalent part number replacement of 1746-F2. The jumper pins are used to set the correct input voltage setting, whether 100/120 VAC or 200 / 240 VAC.

Avoid electrical arc when working with the power supply. Disconnecting or connecting a wire with active supply may produce an electric arc which may damage the electronic backplane. It is important to perform operation when the input power is inactive. The power supply module itself is sensitive to voltage surges that may occur when starting high-inductive electrical loads. To avoid damage to the power supply module, isolation transformer may be installed to prevent voltage surges from entering the power supply.

This power supply features a hold-up time of 20 ms (full load) 3000 ms (no load). This feature allows the PLC processor to continue functioning even when power supply input voltage falls below the nominal supply level.

 

Manufacturer information

Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.

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