AB 1746-OX8
AB 1746-OX8
AB 1746-OX8
AB 1746-OX8
AB 1746-OX8
AB 1746-OX8
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  • Lifecycle status

    Discontinued
    Discontinued date: 2024-09-30
    Replacement category: Engineering Replacement

1746-OX8

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Allen-Bradley 1746-OX8 provides eight individually isolated hard-contact relay outputs for supported AC or DC loads in SLC 500 systems.
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Technical specifications for 1746-OX8

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1746-OX8
  • Product Family:
    SLC 500
  • Product Type:
    Eight-Point Individually Isolated Relay Output Module
  • Stock:
    1
  • Outputs:
    8 individually isolated relay outputs
  • Operating Voltage:
    5–265 V AC, 47–63 Hz; 5–125 V DC
  • Backplane Current:
    85 mA at 5 V DC; 90 mA at 24 V DC
  • Signal Delay:
    10 ms maximum on and off
  • Off-State Leakage:
    0 mA
  • Minimum Load Current:
    10 mA at 5 V DC
  • AC Contact Rating:
    At 240 V: 15 A make, 1.5 A break, 5 A continuous; at 120 V: 30 A make, 3 A break
  • DC Contact Rating:
    At 125 V: 0.22 A make/break, 1 A continuous; at 24 V: 1.2 A make/break, 2 A continuous
  • Weight:
    0.3 kg
  • Tariff Code:
    8504901900
  • Country of origin:
    USA
  • 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 Isolated Circuits Relay Duty Replacement Application
  • Eight individually isolated hard-contact relay outputs
  • Independent circuit references for supported AC or DC loads
  • Published make, break, continuous-current, and minimum-load ratings

1746-OX8 is an Allen-Bradley eight-point individually isolated relay output module for SLC 500 chassis.

The module provides eight separate electromechanical contacts so field circuits need not share a common electrical reference.

Before installation or replacement, verify every circuit’s voltage class, source, protection, contact duty, suppression, terminal assignment, output mapping, and required isolation.

Availability, condition, price, and shipping time for 1746-OX8 are confirmed during quotation.

Allen-Bradley 1746-OX8 Eight-Point Individually Isolated Relay Output Module Manuals, Datasheets, Links

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.

  • Keep each output contact paired with its documented source and return
  • Maintain required separation between different voltage classes
  • Provide circuit-specific overcurrent protection and disconnecting means
  • Use make and break ratings rather than continuous current alone
  • Include load inrush, power factor, and switching frequency in contact-life estimates
  • Apply compatible suppression to coils and other inductive devices
  • Treat the official Engineering Replacement status as an engineered migration
  • Preserve individual circuit isolation in the destination hardware
  • Review terminal conversion, output mapping, diagnostics, and panel space together
  • Individually isolated switching for separately referenced industrial circuits
  • AC and DC load control where each field circuit requires its own relay contact
  • Legacy SLC 500 panels needing eight isolated hard-contact outputs
Description
1746-OX8 is an eight-point individually isolated relay output module for the SLC 500 control platform.

The module provides eight separate electromechanical contacts so field circuits need not share a common electrical reference.

Before installation or replacement, verify every circuit’s voltage class, source, protection, contact duty, suppression, terminal assignment, output mapping, and required isolation.
Alternative Names
1746-OX8 1746OX8 AB 1746-OX8 Allen-Bradley 1746-OX8 Rockwell Automation 1746-OX8
Technical notes
1746-OX8 provides eight isolated relay contacts; preserve circuit separation, verify make/break duty, wetting current, suppression, and engineered-replacement requirements.
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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.
When is the individual isolation of 1746-OX8 useful?
It lets each relay contact switch a separately referenced circuit, provided every circuit still complies with the module’s spacing, voltage, and safety requirements.
Can 1746-OX8 switch AC and DC circuits on different points?
Individual isolation permits separately referenced circuits, but review terminal ratings, conductor segregation, overcurrent protection, and hazardous-voltage rules for the complete wiring arm.
Why should 1746-OX8 loads be suppressed even though the outputs are relays?
Inductive switching arcs across mechanical contacts. Proper suppression improves contact life and reduces electromagnetic interference without masking required stop behavior.
Does the 10 ms delay make 1746-OX8 suitable for pulse output?
It is intended for relay-speed control, not high-frequency pulse generation. Consider contact bounce, pickup/dropout time, and mechanical life.
What can cause intermittent operation of a lightly loaded 1746-OX8 point?
Very low wetting current, contaminated contacts, loose terminals, marginal field voltage, or a failing load can create high contact resistance and inconsistent switching.
How should replacement 1746-OX8 contacts be assigned?
Preserve each isolated circuit’s source, protection, voltage class, load duty, and terminal number; do not consolidate commons merely because the replacement has similar point count.
Can 1746-OX8 relay outputs switch both control signals and field loads?
Yes, if each circuit stays within its assigned contact rating and wiring requirements. Keep low-level signals separate from noisy or inductive loads to prevent interference and contact problems.

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