125720-02
125720-02
125720-02
125720-02
125720-02
125720-02
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125720-02

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Bently Nevada 125720-02 is the 3500/32M four-channel relay output module listed for hazardous-area and functional-safety systems.
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Technical specifications for 125720-02

  • Manufacturer:
    Bently Nevada
  • Part Number:
    125720-02
  • Product Family:
    3500 System
  • Product Type:
    3500/32M 4-Channel Relay Output Module
  • Stock:
    1
  • Product role:
    4-channel relay output module
  • Monitor family:
    Bently Nevada 3500/32M
  • Relay form:
    SPDT
  • Relay state selection:
    Normally energized or normally de-energized
  • Arc suppression:
    250 Vrms
  • Operating temperature:
    -30 to +65 °C
  • Weight:
    0.4 kg
  • Estimated shipping dimensions:
    24.1x2.44x9.91cm
  • Tariff Code:
    8538900000
  • 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 Relay Outputs Application Boundary Installation Checks Product Applications

Features:

  • Protection interface: Provides four relay output paths for a 3500/32M rack.
  • Variant scope: Baker Hughes lists the /02 part for hazardous-area and functional-safety systems.
  • Contact design: Epoxy-sealed SPDT relays require the assigned output logic and wiring to agree.
The module converts configured rack logic into discrete relay contact actions.

Normally energized or de-energized selection must match the approved design.

Each relay channel should be traced to its documented field action before a planned exchange.

Apter Power can help quote the Bently Nevada 125720-02 3500/32M Relay Output Module and review technical records for the installed system.
Bently Nevada 125720-02 3500/32M Relay Output Module Manuals,Datasheets,LinkImportant Notice: The rack, field relays, wiring accessories and safety proof-test records are excluded unless quoted.
  • Output function: Four independent SPDT contacts turn assigned 3500/32M logic into field actions.
  • Relay construction: Epoxy sealing supports the specified rack application but does not determine the plant contact load.
  • Energization choice: Normally energized and normally de-energized operation have different fail-state implications.
  • Circuit interface: Arc suppression is specified, while actual field voltage and load still require project-level verification.
  • System variant: The /02 module is listed for specified hazardous-area and functional-safety installations.
  • Logic dependency: A relay exchange should preserve the approved cause-and-effect and voting design.
  • Field interface: Contact duty and any interposing relay must match the existing circuit.
  • Scope limit: This output module does not replace the 3500/32M control module or external field devices.
  • Maintenance state: A planned bypass and trip-management procedure protects the process during exchange.
  • Wiring comparison: Contact assignments and energized-state selection should be checked against the cabinet drawing.
  • Proof testing: Authorized channel tests should verify the intended alarm or trip action after installation.
  • Return to service: Bypasses should be cleared only after indications and field actions agree with the approved logic.
  • 3500 rack alarm and trip relay outputs.
  • Hazardous-area monitoring-system maintenance.
  • Functional-safety relay-module replacement.
  • Planned proof-test and outage support.
Description
Configured alarm or protection logic reaches field circuits through 125720-02, the four-channel relay output module listed for 3500/32M hazardous-area and functional-safety applications. The plant cause-and-effect design determines what each contact actually controls.

The epoxy-sealed SPDT outputs of 125720-02 can be assigned normally energized or normally de-energized behavior. That choice affects the expected fail state, so contact wiring, field voltage and any interposing devices should be reviewed together with the existing logic.

When preparing a quotation for 125720-02, Apter Power can help verify the exact /02 identity and provide relevant technical records. Planned proof testing should follow the site-approved procedure before affected outputs return to service.
Alternative Names
Bently Nevada 125720-02 Bently 125720-02 12572002 125720 02 12572O-02 I25720-02 3500/32M 125720-02 125720-02 relay module
Technical notes
125720-02 is a relay output module, not a battery assembly. Verify normally energized or de-energized selection, SPDT field wiring, contact load and cause-and-effect logic before replacement. Official operating temperature is -30 to +65 °C; use the approved safety procedure before returning any trip circuit to service.
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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 do I confirm that 125720-02 is the right relay output module for my rack?
Baker Hughes lists the /02 output module for 3500/32M hazardous-area and functional-safety systems. Compare the installed module label and the approved rack configuration.
Will 125720-02 preserve my existing relay fail-state behavior?
Only when the normally energized or normally de-energized selection and assigned logic match the site design. Our team can help review the part identity and documentation.
What field-circuit details should I check before ordering 125720-02?
Review contact wiring, field voltage, load and any interposing device against the approved cause-and-effect drawings; the module number alone does not define those circuits.
How should I plan a 125720-02 exchange on an active protection system?
We recommend a site-approved maintenance state and bypass plan because these contacts may participate in alarm or trip actions. Follow the plant procedure for safe execution.
What should be verified after installing 125720-02?
Authorized relay proof tests should confirm each expected indication and field action before the affected bypasses are cleared and the output returns to service.
What should I include when requesting a quote for 125720-02?
Please share the module label, 3500/32M rack details and destination. Apter Power can review the exact part and provide quotation and documentation support.

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