Littelfuse SymCom 201575-AU MotorSaver Protection Relay.

Littelfuse SymCom 201575-AU MotorSaver Protection Relay is a unique micro-controller-based voltage and phase-sensing circuit that constantly monitors the 3-phase voltages to detect harmful power line conditions. When a harmful condition is detected, the MotorSaver's output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to acceptable levels. The Model 201575-AU includes advanced single LED diagnostics. Five different light patterns distinguish between faults and normal conditions.

The Model 201575-AU includes variable settings such as 1-30 second adjustable trip delay, manual or 1-500 second restart delay, and 2-8% voltage unbalance trip point. An adjustment is provided to set the nominal line voltage for 475-600VAC.

Protects 3-Phase Motors From:
• Loss of any phase
• Low voltage
• High voltage
• Voltage unbalance
• Phase reversal

Other Features:
• Advanced LED diagnostics allows for quick visual indicator for cause of trip.
• Adjustable voltage unbalance trip settings allows compatibility with a variety of motors and reduces nuisance tripping.
• Microcontroller-based circuitry provides better accuracy and higher reliability than analog designs.

Note: *Must use Model OT08PC socket for UL Rating.

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