Introduction

The Bently Nevada 3500/32 125720-02 + 125712-01 4-Channel Relay Module is a core component of high-performance rotating machinery protection systems. Combining four independent relay outputs in a compact form, it delivers dependable control actions for alarm and shutdown logic — essential for minimizing risk and maximizing uptime.

Technical Specifications

Parameter	Description
Model	3500/32 125720-02 + 125712-01
Module Type	4-Channel Relay Module
Dimensions	241 × 24.4 × 242 mm
Weight	Approx. 0.7 kg
Installation	Rack-mounted in 3500 Series systems
Application Environment	Machinery protection, alarm & trip control

Recommended Related Models

For complete machinery health and protection systems, the following modules are commonly paired with this relay module.

Bently Nevada 3500/45 Reciprocating Rod Position Monitor
Bently Nevada 3500/77 Cylinder Pressure Input/Output Module
Bently Nevada 3500/25 Enhanced Key Phaser Module
Bently Nevada 3500/40 Proximitor I/O Module

Popular Related Models

These Bently Nevada modules are frequently selected for similar relay and protection functions.

Bently Nevada 3500/32M 184631-02 4-Channel Relay Module
Bently Nevada 3500/32 149986-02 4-Channel Relay Control Module
Bently Nevada 3500/33M 16-Channel Relay Module
Bently Nevada 330104-01-08-50-01-CN 3300 XL Proximity Probe

Applications

The Bently Nevada 3500/32 4-Channel Relay Module (combined units 125720-02 and 125712-01) is engineered for dependable alarm, shutdown, and interlock control in critical machinery protection systems. Its multi-channel architecture provides flexible relay signaling for large rotating assets and safety logic integration.

Alarm and trip output for Bently Nevada 3500 Series machinery protection
Control of shutdown and interlock systems on turbines, compressors, pumps, and motors
High-reliability relay control in power generation, petrochemical, and industrial plants
Distributed PLC and protection logic implementations
Applications requiring precise multi-channel relay actuation

Advantages

Built to meet stringent industrial reliability requirements, this module combination ensures responsive protection actions and minimizes risk of unplanned equipment damage.

Four independent relay channels for versatile control logic
High-integrity switching for alarm, trip, and interlock functions
Compact, rack-mountable design optimized for 3500 Series systems
Modular configuration supports scalable protection schemes
Designed for continuous 24/7 operation in harsh industrial environments

Technical FAQs

What primary function does this relay module serve?
It provides multiple discrete relay outputs for alarms, trips, and interlocks.
Why is a four-channel module beneficial?
It consolidates multiple protection outputs into a single compact component, reducing rack and wiring requirements.
Is this module suitable for continuous industrial use?
Yes — it is engineered for reliable 24/7 operation.
Which equipment can it interface with?
Trip circuits, alarms, interlock switches, and auxiliary breaker controls.
How is it installed?
It mounts directly into a Bently Nevada 3500 Series rack.
Does this combination prevent mis-installation?
Yes — keyed and modular design supports correct slot alignment.
What are the physical dimensions?
241 × 24.4 × 242 mm.
How heavy is the assembled module?
Approximately 0.7 kg.
Does it require special setup tools?
Standard Bently Nevada 3500 configuration software and tools are used for system integration.
Can it function in extreme industrial conditions?
Yes — built to tolerate vibration, temperature variation, and rugged environments.