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1734-OB8

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Allen-Bradley 1734-OB8 is an eight-point 24 V DC sourcing output module for POINT I/O field-load control.
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Technical specifications for 1734-OB8

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1734-OB8
  • Product Family:
    Point I/O 1734
  • Product Type:
    POINT I/O 8-Point Digital Source Output Module
  • Stock:
    1
  • Revision:
    Series C
  • Output architecture:
    8 sourcing outputs in one group
  • Nominal output voltage:
    24 V DC
  • Output rating:
    1 A per output; 3 A per module
  • Surge rating:
    2 A for 10 ms, repeat every 3 s
  • Electronic protection:
    No
  • Weight:
    0.0354 kg
  • Estimated shipping dimensions:
    5.66x1.21x7.75cm
  • Tariff Code:
    8537101190
  • Country of origin:
    Singapore
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Output Load Control Surge and Protection Product Applications

Features:

  • Output group: eight 24 V DC sourcing channels
  • Load capacity: official per-channel and total-module current limits
  • Protection boundary: plain catalog has no electronic output protection
1734-OB8 is used to drive eight DC field loads from a compact POINT I/O position.

The difference between channel current and total module current governs how the loads are distributed.

External protection and suppression are important because this catalog is not the electronically protected OB8E variant.

Availability of 1734-OB8 is subject to Apter Power inventory and sourcing confirmation.
Allen-Bradley 1734-OB8 POINT I/O 8-Point Digital Source Output Module Manuals and Product Resources
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Allen-Bradley 1734-OB8 POINT I/O 8-Point Digital Source Output Module Specs

General

  • ManufacturerAllen-Bradley
  • Model1734-OB8
  • ConditionNew Original ready stock
  • Product FamilyPOINT I/O 1734
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Allocate the eight loads

  • Channel demand: calculate running current for each output.
  • Module total: keep the combined load within the official limit.
  • Polarity: wire loads for a sourcing output architecture.
  • Functional test: verify command, terminal voltage, and device response.

Manage switching stress

  • Inrush: compare load surge with the published short-duration rating.
  • Protection: provide appropriate external overcurrent control.
  • Inductive loads: apply suppression at the field device.
  • Fault review: inspect wiring and load condition before replacing the module.

Supported product applications

  • DC solenoids: switch suitable 24 V DC loads with suppression.
  • Indicator circuits: control multiple low-current field devices.
  • Machine outputs: distribute eight sourcing commands near equipment.
  • Panel replacement: restore a standard unprotected source-output position.
Description
1734-OB8 provides eight 24 V DC sourcing outputs as one group for the POINT I/O platform. Rockwell Automation rates the module for individual and total output current, so load allocation must account for both the channel demand and the combined module limit.

The plain 1734-OB8 output path is not electronically protected. Surge current, inductive-load suppression, wiring faults, and external overcurrent protection therefore require deliberate engineering rather than assumptions taken from protected OB8E variants.

A Series C 1734-OB8 replacement should be matched to the supported terminal base, keyswitch position, 24 V DC field supply, sourcing-load polarity, and controller definition. Commissioning should verify command, channel indicator, terminal voltage, and load response for every used output.
Revisions

Revision Part #

Also known as

1734-OB8 Series C
1734-OB8/C, Series C
Alternative Names
Allen-Bradley 1734-OB8 Rockwell Automation 1734-OB8 AB 1734-OB8 1734OB8 1734 OB8 POINT I/O 1734-OB8 source output module
Technical notes
The principal risk with 1734-OB8 is assuming the plain sourcing module has electronic output protection. Confirm Series C, channel and module current, surge duty, external protection, inductive suppression, 24 V DC field power, load polarity, terminal-base wiring, keyswitch position, and controller mapping before energizing or replacing any output circuit.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How should loads be distributed across 1734-OB8 when several outputs run together?
Calculate each channel current and the simultaneous module total, then leave margin for operating conditions and any applicable inrush.
What external protection is needed because 1734-OB8 is not electronically protected?
Select circuit protection and inductive suppression for the actual field supply, conductor, load current, and plant standard; do not rely on the module to clear faults.
Why can a channel indicator turn on while the load connected to 1734-OB8 remains off?
Check field power, sourcing polarity, terminal voltage, common return, load continuity, wiring protection, and controller-to-physical channel mapping.
Can 1734-OB8 replace an electronically protected eight-output variant without reviewing the fault strategy?
No. The protected variant has different behavior, so output diagnostics, electronic protection, controller configuration, and field-circuit design must be compared.
How should inrush from a solenoid or lamp be evaluated for 1734-OB8?
Compare measured or manufacturer-stated inrush duration and magnitude with the official surge limit, repetition interval, channel rating, and module total.
What commissioning sequence reduces wiring risk on 1734-OB8?
Verify Series C identity, base and keyswitch, de-energized wiring, field supply and protection, then energize and test one documented output at a time.