1-919-535-3180 | 1-800-360-6802

GE / IP FANUC Series 90/30 In Stock

A Global Supplier of Industrial Electronics



Mon-Fri 8AM-5PM EST



Rated 4/5 Based on 29 ratings.

Rate your purchase of the 1756-OB32

Image of

Image of

Includes a PDF Electric and Supply warranty.

(Never Used)


3 In Stock

3 Yr PDF Supply warranty

What is Surplus?



12 In Stock

2 Yr PDF Supply Warranty

What is Refurbished?

Repair Service


5-10 Days

2 Yr PDF Supply warranty


Other Available Revisions for the 1756-OB32 1756-OB32/A

Common misspellings:
  • l756-OB32
  • 1756-0B32
  • 1756-O832
  • 1756OB32

Technical Specifications for 1756-OB32

ManufacturerAllen-Bradley / Rockwell Automation
Part Number1756-OB32
Product TypeOutput Module
Outputs32 (16 points per group)
Voltage Category12/24 Volts DC
Operating Voltage Range10 to 31.2 Volts DC
Current Draw at 5.1 Volts300 milliamps
Current Draw at 24 Volts2 milliamps
Total Backplane Power1.58 Watts

The 1756-OB32 by Allen-Bradley is a ControlLogix Output Module that comes with 32 available outputs. The 1756-OB32 also features 16 points per group and it is also an IFM fused module. Being an IFM fused unit, the 1756-OB32 can be used for protecting the outputs by using a recommended fuse that is rated for the module. The recommended fuse for the 1756-OB32 is 5X20 millimeters 800 mA and it is supplied by the LittelFuse part number SP001.1003, or it can alternatively pair well with the Schurter Part Number 216.800 fuse. The 1756-OB32 comes with removable block housing. The removable block housing is commonly referred to as the RTB and it is required for this unit. The only compatible RTBs for the 1756-OB32 include the 1756-TBCH cage clamp, and the 1756-OB32 also uses the 1756-TBS6H spring clamp.

The 1756-OB32 supports various communication formats that are useful for scheduled output data, rack optimization, listen-only rack optimization, and listen-only output data. The users can also configure the 1756-OB32 in the fault mode per point and in the states in program mode. For the 1756-OB32, there are various options that includes hold the last state, and also the on or off states. By default, the 1756-OB32 comes in the off state. The 1756-OB32 runs on a DC output with 32 outputs. Being a DC output module, the 1756-OB32 operating voltage ranges from 10 to 31.2 Volts DC. It comes with a maximum output current rating point of 0.5 Amps at 50 degrees Celsius and it also has 0.35 Amps at 60 degrees Celsius. The maximum output current rating module for the 1756-OB32 is 16 Amps at 50 degrees Celsius and 10 Amps at 60 degrees Celsius. It runs on a maximum power dissipation of 4.8 Watts at 60 degrees Celsius while the isolation voltage for the 1756-OB32 is 50 Volts continuous voltage. The backplane current for the 1756-OB32 at 5 Amps is 300 mA and it also comes with a backplane current of 2 mA at 24 Volts.

The catalog number 1756-OB32 is an order number for one of the modules from the Allen-Bradley ControlLogix series that are commonly used for industrial applications. The module is designed and manufactured by Allen-Bradley/Rockwell Automation and it operates reliably under typical industrial conditions. The 1756-OB32 output module is intended for use on a DC voltage source and it belongs to the 12/24 Volts DC voltage category. The unit has an operating voltage range of 10 to 31.2 Volts DC and it has 32 available output points. The outputs are arranged in 2 equal groups of 16 points each.

The 1756-OB32 ControlLogix output module has a current draw of 300 milliamps at 5.1 Volts and 2 milliamps at 24 Volts. The total backplane power is 1.58 Watts while the maximum power dissipation rating is 4.8 Watts. Also, the module has a thermal dissipation of 16.37 BTU per hour and a maximum current per point of 0.35 Amps at a temperature of 60 degrees Celsius (140 degrees Fahrenheit). This output module has a maximum off-state leakage current per point of 0.5 Amps and a maximum on-state voltage drop of 200 millivolts DC at 0.5 Amps. The 1756-OB32 module has a minimum load current of 3 milliamps per point and maximum surge current per point of 1 Amp for the duration of 10 milliseconds. The 1756-OB32 output module features user-defined mechanical RTB keying and electronic module keying which can be configured through software. The enclosure of this Allen-Bradley module does not have a rating for ingress protection and the module carries a T3C/T3 temperature code rating.
The 1756-OB32 output module is from the ControlLogix series by Allen-Bradley/Rockwell Automation. The module has 32 outputs in 2 groups of 16 points and it operates on 10 to 31.2 Volts DC.

F.A.Q for 1756-OB32

All online orders placed before 4:30 PM EST “SHIPS SAME DAY FREE!" World’s largest warehouse of Factory Sealed GE 90-30 PLC, GENIUS I/O and RX7i PACSystem.highlight_off

PDF Electric & Supply Inc. sells new, new surplus and refurbished products which are sourced through independent channels. All warranties and support, if applicable, are with PDF Electric & Supply Inc. and not the manufacturer. PDF Electric & Supply Inc. is not an authorized distributor or representative for the listed manufacturers and makes no representations as to any quality control performed by any listed manufacturer on the products. The products listed on this website may vary as to their country of origin; the accessories, and other items included with the product; and the language used on the packaging, the parts, and any related instructions or printed material related to the products. This website is not sanctioned or approved by any manufacturer or tradename listed. Designated trademarks, brand names and brands appearing herein are the property of their respective owners.