Littelfuse SymCom 355-600 MotorSaver Protection Relay.

Littelfuse SymCom 355-600 MotorSaver Protection Relay is a unique microcontroller-based voltage and phase-sensing circuit that constantly monitors the 3-phase voltage to detect harmful power line conditions such as single-phasing, high voltage, low voltage, phase reversal, voltage unbalance, and high voltage (optional). 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 an acceptable level for a specified amount of time (restart delay). The trip delay prevents nuisance tripping due to rapidly fluctuating power line conditions.

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

Features:
• Three input voltage ranges provide the versatility to handle global applications
• Diagnostic LED's indicate trip status and make troubleshooting a snap
• The microcontroller-based circuit provides better accuracy and higher reliability than analog designs
• Transient protection meets IEC 1000-4-5:1995 standards to handle tough conditions
• Single-Phase conditions are detected regardless of regenerated voltages
• Diagnostic LED's indicate: Run, restart delay, reverse phase, unbalance/single-phase, high/low voltage

Disclaimer Notice: Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.