Littelfuse SymCom 777-575-HRG-P2 Series MotorSaver.

Littelfuse SymCom 777-575-HRG-P2 MotorSaver is a fully programmable electronic overload relay that is designed to monitor and protect any 3-phase 500-600VAC motor drawing 2-90A full load amps. Designed for high resistance grounding systems that incorporate an external zero-sequence CT that correspond with the built in multipliers to detect ground faults.

The 777-575-HRG-P2 MotorSaver is used for 3-phase, 500-600VAC applications, with several specialized units for other voltage ranges and unique applications. Common applications include conveyor systems, HVAC equipment, saws and grinders, fan motors, and almost any pumping application. Some unique applications include use with a Subtrol* equipped Franklin submersible motor to detect high motor temperatures and applications where a fast linear trip is required. (*Subtrol and DeviceNet are trademarks of their respective owners.)

All of the overload relays provide unsurpassed protection by combining overload, voltage, phase loss and reversal, voltage and current unbalance, power monitoring, and underload based on current — all in one package. For standalone applications, the units incorporate a 3-digit LED display that is used for programming, providing real-time operational information, and displaying diagnostic codes to aid in troubleshooting a fault condition.

The units also feature a communications network port that can be used with communication modules listed in the 777 accessories section to form a Modbus, DeviceNet*, Profibus, or Ethernet network. Up to 99 units can be remotely monitored and controlled from a PC, PLC, or SCADA system, and data logging through a PC with the optional Solutions software. This capability allows for a simple, cost-effective way to meet new requirements for arc-flash safety.

AUXILIARY PRODUCTS:
• Remote Displays (RM-1000/RM-2000)
• Communication Modules
• Remote Manual Reset Kit
• Solutions Software

Protects 3-Phase Motors From:
• Low voltage
• High voltage
• Voltage unbalance
• Reverse-phase
• Overcurrent
• Undercurrent
• Current unbalance
• Single-phase
• Low control voltage
• Ground fault
• Contact failure
• Low power
• High power

Other Features:
• Network programmable
• Programmable with 9-volt battery prior to installation
• Automatic reset with three separate restart delay timers, or manual reset
• Tamper guard
• RS-485 communications port (communications module sold separately)
• 3-digit LED diagnostic display
• Last fault memory

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.