Bently Nevada 125840-02 Power Input Module | Replacement, Equivalent & Selection Guide
The Bently Nevada 125840-02 is a Power Input Module designed for the Bently Nevada 3500 Series machinery protection system. It provides regulated DC power distribution to the 3500 rack, supporting continuous vibration and condition monitoring in critical rotating machinery applications. This page serves as a comprehensive selection, replacement, and compatibility reference for industrial procurement engineers and maintenance teams.
Technical Specifications
- Part Number: 125840-02
- Manufacturer: Bently Nevada (Baker Hughes)
- Series: 3500 Machinery Protection System
- Module Type: Power Input Module
- Input Voltage: 88–264 VAC / 90–150 VDC (wide-range)
- Output: Regulated DC power to 3500 rack backplane
- Form Factor: Single-slot 3500 rack module
- Weight: Approx. 320 g
- Operating Temperature: 0°C to +60°C
- Certifications: CE, UL, CSA (per 3500 system documentation)
- Country of Origin: USA
Compatible Replacement & Equivalent Models
The following modules are commonly evaluated as replacements or equivalents for the 125840-02. Always verify electrical and mechanical compatibility before substitution:
- 125840-01 — Earlier revision; verify firmware and rack compatibility
- 125840-03 — Later revision with enhanced surge protection
- 3500/15 — Power Supply Module (alternative power architecture)
- 3500/15-05-00-00 — Extended input range variant
- Emerson / Baker Hughes OEM equivalents — Confirm via BN part cross-reference tool
Note: Konmask.com supplies both original Bently Nevada modules and verified compatible alternatives. Contact us for cross-reference confirmation.
Why Choose the Original 125840-02
- Factory-validated for 3500 Series rack integration — no firmware conflicts
- Guaranteed backplane pinout and power sequencing compatibility
- Supports Bently Nevada System 1 software diagnostics without modification
- Meets OEM warranty and safety certification requirements
- Preferred for nuclear, oil & gas, and power generation compliance audits
Typical Applications
- Gas turbine and steam turbine vibration monitoring racks
- Compressor train protection systems in LNG and petrochemical plants
- Pump and motor condition monitoring in power generation facilities
- Replacement power supply in existing 3500 Series installations
- Spare parts inventory for critical machinery protection systems
System Compatibility
- Rack: Bently Nevada 3500 Series (all standard rack configurations)
- Slot: Power input slot (leftmost position in 3500 rack)
- Software: Compatible with System 1 Evolution and legacy System 1 platforms
- Communication: Works with 3500/22M, 3500/32, 3500/40M, 3500/42M, 3500/44M, 3500/50, 3500/60, 3500/72M monitor modules
- Not compatible with: 3300 Series or 1900/65A standalone monitors
Selection Guide
Use the following criteria to confirm the 125840-02 is the correct module for your application:
- Step 1 — Confirm rack model: Verify your rack is a Bently Nevada 3500 Series chassis
- Step 2 — Check input voltage: Confirm site power is within 88–264 VAC or 90–150 VDC range
- Step 3 — Verify revision: Check existing module label for revision suffix (-01, -02, -03) and match to your system documentation
- Step 4 — Assess redundancy: Determine if a redundant power input module (dual PSU configuration) is required
- Step 5 — Contact Konmask: Send your rack serial number and existing module part number for final confirmation
Quality Assurance & Sourcing
- All modules sourced from authorized distributors or verified surplus channels
- Pre-shipment functional inspection and visual QC performed
- Original packaging and documentation preserved where available
- Traceability records available upon request for regulated industries
- 12-month warranty on all Konmask-supplied modules
How to Order
- Confirm part number: 125840-02
- Specify quantity and required delivery timeline
- Submit RFQ via support@konmask.com or WhatsApp +0086 19859288691
- Receive quotation within 1 business day
- Payment via T/T, PayPal, or credit card; DHL/FedEx/UPS worldwide shipping available
Replacement & Compatibility FAQ
Q: Can 125840-01 replace 125840-02?
A: In most cases yes, but verify rack firmware version and any ECN (Engineering Change Notice) requirements with Bently Nevada documentation before substitution.
Q: Is the 125840-02 compatible with redundant power configurations?
A: Yes. Two 125840-02 modules can be installed in a dual-PSU 3500 rack for redundant power input.
Q: Do you supply new or refurbished units?
A: Konmask supplies both new-in-box and professionally refurbished units. Condition is clearly stated in the quotation.
Q: How long does shipping take?
A: Standard international delivery is 3–7 business days via DHL Express. Expedited options available.
Q: Can I return the module if it’s incompatible?
A: Yes. Konmask offers a 30-day return policy for unused modules in original condition.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
