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PRODUCT DESCRIPTION
Four channel relay module
Bently Nevada 125720-01 is a relay output module. The rear assembly provides four relay-output connections for the compatible 3500 relay control module. It is not a separate vibration monitor. Contact duty, field voltage and the selected hazardous-area or functional-safety requirements govern its permitted switching conditions.
The official spare table identifies 125720-01 as a four-channel relay output spare. Verify the matching front and rear modules, programmed logic and permitted contact voltage before replacement. Match the complete product identity and installation requirements before selecting the replacement assembly.
The official spare table identifies 125720-01 as a four-channel relay output spare. Verify the matching front and rear modules, programmed logic and permitted contact voltage before replacement. Match the complete product identity and installation requirements before selecting the replacement assembly.
BEFORE YOU BUY
Confirm the complete installed configuration
ACTUAL APPLICATIONS
Applications for 3500 machinery monitoring system
These applications describe manufacturer-documented family use. They do not establish that this exact ordering code was installed at a named customer site.
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01 · ALARM LOGIC
Independent alarm-output voting
The manufacturer permits each relay output to use independently configured voting from rack monitor alarms and conditions. The connected control logic must reflect the intended machinery-protection design. -
02 · RACK STATUS
Not-OK and alarm indications
AND/OR logic can include Not-OK states as well as Alert and Danger conditions. These inputs let the configured relay report selected combinations without measuring a transducer signal itself. -
03 · CONTROL INTERFACES
Voltage-limited field contacts
Relay contacts connect the monitoring logic to external circuits within their permitted load ratings. Functional-safety and hazardous-area systems require the lower published voltage limits.
Technical specifications for 125720-01
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Product Model125720-01
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Product ParametersFour channel relay module
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In stock9 units
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ManufacturerBently Nevada
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Documented roleFour-channel relay output I/O
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Module formatFull-height
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Rack locationRear I/O position
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Relay contact formSingle-pole double-throw (SPDT)
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Relay sealingEpoxy-sealed
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Arc suppression250 Vrms suppressor installed as standard
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Relay operating modeNormally energized or normally de-energized, switch selectable
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Operating temperature-30 to +65 deg C; apply approval-specific limits
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Storage temperature-40 to +85 deg C
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Humidity limit95%, noncondensing
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Minimum contact load100 mA at 12 Vdc
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Restricted voltage ceiling30 Vdc or 30 Vac for functional-safety and hazardous systems
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Restricted resistive current2 A maximum
View all additional
Alternative Names
125720-01 relay output module
Bently Nevada 125720-01
125720 01 relay output module
SYSTEM & REPLACEMENT CHECK
Information needed before ordering
Three direct checks to secure your system integration and minimize ordering risks.
Information
System integration
Replacement check
Manuals & support
FOUR CHANNEL RELAY MODULE
Integrating 125720-01
The rear assembly provides four relay-output connections for the compatible 3500 relay control module. It is not a separate vibration monitor. Contact duty, field voltage and the selected hazardous-area or functional-safety requirements govern its permitted switching conditions.
The 3500/32M requires a 3500/22 TDI and compatible rack software. Do not select a relay output merely by channel count: ordinary, hazardous-area and functional-safety contact ratings differ. The restricted systems must not use the higher ordinary-location voltage ratings.
Identify the front controller and rear output module separately. Confirm the relay mode switches, load and field-wiring voltage with user guide 129771. Follow electrical isolation and site safety procedures; accessible relay conductors can present a shock hazard.
Features:
- Match complete spare-part identity, module generation, rack position and mating input/output assembly
- Follow the applicable installation instructions
- Confirm unverified configuration details
The 125720-01 relay output module requires appropriate configuration before system integration and commissioning.
INTERCHANGEABILITY
Verify the complete replacement identity before commissioning
Replacement of 125720-01 requires comparing complete spare-part identity, module generation, rack position and mating input/output assembly. A shared base family or similar appearance does not establish a drop-in replacement for the complete ordered assembly.
The 3500/32M requires a 3500/22 TDI and compatible rack software. Do not select a relay output merely by channel count: ordinary, hazardous-area and functional-safety contact ratings differ. The restricted systems must not use the higher ordinary-location voltage ratings.
No verified exact-order discontinuation date, product revision or designated successor is asserted. Document revisions identify the reference literature, not hardware changes to the supplied product. Unconfirmed replacement options must be resolved before substitution.
Features:
- Preserve the complete ordering identity
- Compare the installed electrical and mechanical interfaces
- Do not infer hardware revisions or successor models
The 125720-01 relay output module requires replacement verification against the complete installed configuration and current manufacturer documentation.
DOCUMENTATION STATUS
Browse the Manuals, Datasheets, Official Documents, Links
Important Notice: No verified product PDF is currently available on this page. Amikong-hosted reference documents will be listed only after their product identity and scope have been checked. Consult the applicable manufacturer instructions before use; additional documents are included only when expressly listed in the quotation.Features:
- Verify document identity before procurement or installation
- Match the complete order to the manufacturer document scope
- Accessories are supplied only when listed in the quotation
Documentation for the 125720-01 relay output module must be checked for document applicability before installation or commissioning.
Also searched as
Important notice
Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
BUYER INFORMATION
Commercial terms without hidden steps
Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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Shipping & delivery
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DispatchEligible stock: same / next day
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CarriersDHL, FedEx or UPS
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Ship fromXiamen, China
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Packed size2.5x11x24cm
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Shipping weight0.5 kg
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Payment & customs
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PaymentBank transfer (T/T)
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CurrenciesUSD · EUR · GBP · RMB
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Credit cardsNot accepted
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HS reference9031900090
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OriginUSA
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Warranty & returns
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Warranty12 months from AMIKON
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InspectionLabel, condition and packing checks
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ReturnsPrior RMA authorisation required
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CompatibilityConfirm before order
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OEM warrantyDoes not apply
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Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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Part checked
Full suffix recorded -
Condition checked
Label and appearance -
Packing checked
Antistatic protection -
Tracking supplied
Established couriers -
Sandy Lin
Dedicated account manager · 15+ years
FREQUENTLY ASKED QUESTIONS
Questions buyers ask about 125720-01
Direct answers about identity, compatibility, stock, warranty, payment and shipping.
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How is the exact replacement identified?
The official spare table identifies 125720-01 as a four-channel relay output spare. Verify the matching front and rear modules, programmed logic and permitted contact voltage before replacement. -
What is the function of this component?
The rear assembly provides four relay-output connections for the compatible 3500 relay control module. It is not a separate vibration monitor. Contact duty, field voltage and the selected hazardous-area or functional-safety requirements govern its permitted switching conditions. -
Which installed components must be compatible?
The 3500/32M requires a 3500/22 TDI and compatible rack software. Do not select a relay output merely by channel count: ordinary, hazardous-area and functional-safety contact ratings differ. The restricted systems must not use the higher ordinary-location voltage ratings. -
Where is this component used?
The manufacturer permits each relay output to use independently configured voting from rack monitor alarms and conditions. The connected control logic must reflect the intended machinery-protection design. -
What must be checked during installation?
Identify the front controller and rear output module separately. Confirm the relay mode switches, load and field-wiring voltage with user guide 129771. Follow electrical isolation and site safety procedures; accessible relay conductors can present a shock hazard. -
Can hazardous-area or SIL systems use 125 Vdc contacts?
No. The datasheet restricts functional-safety and hazardous-area systems to 30 Vdc or 30 Vac and 2 A resistive switching. The higher ordinary-location values must not be transferred to those systems. -
Is 125720-01 a currently unrestricted new-spare selection?
The current official spare table lists 125720-01 as available for repair only and distinguishes 125720-02 for hazardous-area and functional-safety systems. This does not establish an unconditional drop-in replacement or an exact discontinuation date.
READY TO VERIFY YOUR PART?
Get a 125720-01 quote with price, lead time and revision check.
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