Phase Monitoring Relay (DIP package) — single unit, customizable, no high-concern chemicals Key benefits Protects three-phase equipment by detecting phase loss, phase reversal, and phase imbalance before damage occurs. Compact DIP package enables direct PCB mounting or insertion into standard sockets for space-efficient integration. Customizable configuration to match control system requirements (timing, trip logic, and connection options). Safe for use in applications where restricted chemical content is required — no high-concern chemicals present. What this device does Continuously monitors the presence, sequence, and balance of three-phase supply lines. Produces an alarm or disables loads when a fault condition (loss, reversal, or severe imbalance) is detected, helping prevent motor overheating, bearing damage, or control-system failures. Important attributes Function: Phase monitoring relay — detects phase loss, phase sequence errors, and phase imbalance. Package: DIP (dual in-line package) for PCB mounting or socket use. Quantity: Supplied as a single unit. Customization: Available — relay settings and interface can be adapted to specific installation needs. Chemical safety: Contains no high-concern chemicals, suitable for environments with chemical-content restrictions. Performance: Designed for reliable, low-maintenance protection and fast response to phase faults (specific timing and thresholds available on request or through customization). Compatibility and integration Integrates with standard three-phase control panels, motor starters, PLC input circuits, and relay logic. DIP format fits common PCB layouts and mounting sockets, simplifying replacement or upgrades. Customizable interfaces allow matching of logic levels, trip outputs, and timing to existing control systems. Typical applications Industrial motor protection: Install upstream of motor starters or contactors to prevent damage from phase loss or reversed sequence on pumps, compressors, and conveyor drives. HVAC and refrigeration systems: Protect multi-phase compressors and fans from phase imbalance and reversed rotation that reduce efficiency or cause mechanical stress. Backup power and generator systems: Monitor phase integrity during generator start/transfer sequences to ensure correct phase sequence and prevent loading errors when switching sources. Ordering and customization Supplied as a single DIP-packaged relay — contact your supplier to confirm required configuration options (trip thresholds, delay settings, output types) and to request custom variants. Usage notes Verify compatibility with your system voltage and control logic before installation. Follow standard electrical safety and installation practices; use appropriate fusing and isolation as required by your system. This phase monitoring relay provides a compact, customizable solution for safeguarding three-phase equipment without introducing high-concern chemicals, making it suitable for a wide range of industrial and commercial control applications.