1.Operating Temperature: 20–65°C (IEC 60068-2-1/2-14 compliant) with non-operating range -40–85°C.
2.Relay Configuration: 4 relays with DPPDT (2 Form C) contacts, 250 V AC/3 A (50/60 Hz), 150 V DC/1.6 A resistive.
3.Failsafe Logic: Normally energized relays with two-out-of-three activation logic for shutdown/alarm functions.
4.Communication Interface: Host integration via 3 digital inputs on terminal base (side connector for power/communication pass-through).
5.Status Indicators: Dual-color LEDs for module power (red/green), shutdown relay (red), alarm relay (red).
6.Environmental Compliance: IEC 60068-2-6 vibration resistance (operating) and 15 g shock tolerance.
7.Redundancy Design: Triple-redundant EODS (Electronic Overspeed Detection System) compliant with API standards.
8.Humidity Tolerance: 5–95% noncondensing humidity (IEC 60068-2-56 damp heat test).

The 1440-REX03-04RG is a mission-critical safety relay module designed for industrial overspeed detection and shutdown systems, integrating triple-redundant EODS (Electronic Overspeed Detection System) logic with 4 DPPDT relays (250 V AC/3 A) for fail-safe control in high-vibration environments. Built to comply with API standards and IEC 60068-2-6 vibration resistance, the 1440-REX03-04RG features two-out-of-three voting logic for shutdown/alarm functions, configurable digital inputs for host integration, and dual-color LED status indicators (power, shutdown, alarm) to ensure real-time operational transparency in turbines, compressors, and other critical machinery. Its ruggedized design (-40–85°C non-operating tolerance, 5–95% humidity compliance) and redundant architecture prioritize industrial safety while minimizing false triggers in extreme conditions.

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