Bently Nevada 3500/32 125720-01 Spare 4-Channel Relay I/O Module
The Bently Nevada 125720-01 is a precision spare 4-channel relay i/o module for the Bently Nevada 3500 Series machinery protection platform. TX/RX LED: Flashes to indicate proper communication between this module and other modules within the rack. | CH ALARM LED: Lights up when the relay channel is in an alarm state. | Sealing: Epoxy-sealed. Factory-sealed, fully tested on a live 3500 rack with 48-hour burn-in at 55°C. 12-month warranty. Ships within 24 hours from Shenzhen.
Technical Specifications
| Bently Nevada 125720-01 | is a 4-Channel Relay I/O Module designed for use within the Bently Nevada 3500 series systems. This module features four relay outputs and can be installed in any slot to the right of the Rack Interface Module. The outputs can be programmed independently to perform custom voting logic. Each relay includes Alarm Drive Logic, which can be configured with AND and OR logic to respond to alarms (alerts and dangers) from any combination of monitor channels within the rack. |
|---|---|
| OK LED | Illuminates when the module is functioning properly. |
| TX/RX LED | Flashes to indicate proper communication between this module and other modules within the rack. |
| CH ALARM LED | Lights up when the relay channel is in an alarm state. |
| Sealing | Epoxy-sealed |
| Arc Suppressor | 250 Vrms, installed as standard |
| Contact Life | 100,000 cycles at 5 A, 24 Vdc or 120 Vac |
| Operation | Each channel is switch-selectable for Normally De-energized or Normally Energized |
| Part Number | 125720-01 |
| Manufacturer | Bently Nevada |
| Product Type | Relay I/O Module |
| Operating Temperature | -30 °C to +65 °C |
| Storage Temperature | -40 °C to +85 °C |
| Dimensions (H x W x D) | 241 mm x 24.4 mm x 99.1 mm |
| Weight | 0.4 kg |
| Humidity | 95%, non-condensing |
| Availability | In Stock |
| Country of Manufacture | United States (USA) |
| Model / SKU | 125720-01 |
Ships within 24 hours | 12-Month Warranty | Worldwide Delivery
Understanding the Bently Nevada 125720-01
If you maintain Bently Nevada systems, you know that not all replacement parts are created equal. The 125720-01 is a spare 4-channel relay i/o module engineered specifically for Bently Nevada automation platforms. The aftermarket is flooded with modules that look identical on the outside but use inferior components internally. ok led: Illuminates when the module is functioning properly.; ch alarm led: Lights up when the relay channel is in an alarm state.; sealing: Epoxy-sealed; arc suppressor: 250 Vrms, installed as standard. We have tested clone modules side-by-side with genuine Bently Nevada units — the clones typically fail within 3–6 months in continuous industrial service, sometimes taking out the backplane with them.
Every 125720-01 we sell is 100% genuine Bently Nevada, with the manufacturer serial number and holographic label intact. We source from authorized distribution channels and decommissioned system tear-downs with full traceability documentation.
Before inserting this module, power down the chassis completely. Bently Nevada modules are generally not hot-swappable. Verify backplane voltage with a calibrated multimeter before insertion. After installation, power up and verify the status LED shows normal operation before returning the system to service. Run the manufacturer diagnostic routine if available.
Compatible Parts — Same System
These modules share the same system family as the 125720-01. Commonly ordered together for complete rack builds or spare parts kits.
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