The Bently Nevada 3500/33 Relay Module is a full-height, 16-channel relay module that provides 16 independent relay outputs. You can install any number of these modules in slots located to the right of the Transient Data Interface (TDI) Module within the 3500 rack. Each relay output can be individually programmed to execute specific voting logic, allowing flexible and customized alarm and control configurations.
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The Bently Nevada 3500/33 Relay Module is a full-height, 16-channel relay module designed to provide reliable and flexible relay outputs for 3500 series machinery protection systems. Each of the 16 channels can be independently programmed to perform voting logic, giving users precise control over alarm and trip functions. The module is ideal for applications that require complex alarm schemes or multiple relay-driven outputs, ensuring that machinery protection and monitoring requirements are fully met.
You can install any number of Bently Nevada 3500/33 Relay Modules in the 3500 rack slots to the right of the Transient Data Interface (TDI) Module, allowing for scalable expansion to accommodate larger systems. Its design supports integration with existing 3500 series racks and works seamlessly with the 3500 Rack Configuration Software, enabling users to customize relay logic based on Alert, Danger, Not-OK, and PPL signals from monitor channels.
Relay Outputs: 16 independent channels (Form C, SPDT dry contacts)
Power Consumption: ~12–15 W from 3500 rack backplane (typical)
Maximum Switched Current: 2 A (0–30 V DC) / 0.75 A (48 V DC) / 0.2 A (125 V DC)
Maximum Switched Voltage: 125 V DC / 250 V AC
Maximum Switched Power: ~450 VA per relay
Minimum Switched Load: ≥ 100 mA @ 12 V DC
Relay Type: SPDT with epoxy‑sealed contacts
Contact Life: ~100,000 cycles (typical, depending on load)
Operating Temperature: –30 °C to +65 °C (–22 °F to +149 °F)
Storage Temperature: –40 °C to +85 °C (–40 °F to +185 °F)
Humidity Rating: Up to 95 % non‑condensing
Status Indicators: Alarm and OK LEDs per relay channel
Rack Space: Occupies one full‑height front slot and a matching rear I/O slot in the 3500 rack
Weight: ~1.0 kg (2.2 lb) total
This is a reference configuration for the Bently Nevada 3500/33 Relay Module. It represents one commonly supplied setup and helps customers understand how the part number is structured.
Each X / XX in the part number indicates a selectable option that can be customized based on your application requirements such as Number of Channels, I/O Module Type & Approvals.
✅ Important: Final part number depends on the exact configuration needed for your machinery, environment, and monitoring system.
The Bently Nevada 3500/33 Relay Module is commonly used in industrial machinery protection systems, including:
Providing 16 independent relay outputs for alarm and trip functions
Executing configurable voting logic for complex alarm schemes
Driving external control devices, shutdown systems, or annunciators
Integrating Alert, Danger, Not-OK, and PPL signals from 3500 monitor channels
Expanding 3500 racks for large-scale machinery protection and automation
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