littelfuse faq

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What Does The 777-P2 Have That The 777 Does Not?

What Does The 777-P2 Have That The 777 Does Not?Battery programming - program the unit without applying line voltage by using a 9 volt battery to power the unit. A new 16 bit memory map to aid developers using PLCs, software, and other SCADA equipment (in addition to the legacy 8 bit memory map). Compatible with SymCom communications modules and remote monitors.

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What Is A 777-HRG?

What Is A 777-HRG?A SymCom 777-HRG is an enhanced overload relay that includes all of the same voltage, current, and power protection features as the 777-P2, but adds the capability to monitor low level ground fault currents typically seen in High Resistance Grounded (HRG) systems.
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What is a Motor Saver? Should I Have One?

LittelfuseNot every facility has consistent incoming voltage. The MotorSaver helps protect both motors and inverter from excessive voltage in areas where voltage spikes can occur. When the normal line voltage is present, the Green LED will illuminate and the relay will pull in.
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Frequently Asked Questions For Littelfuse SymCom Protection Relays & Controls

Frequently Asked Questions For Littelfuse SymCom Protection Relays & ControlsRead more for answers to frequently asked questions about Littelfuse SymCom Protection Relays & Controls.
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Do I Need Fuses For The Front End Of My Littelfuse SymCom Voltage Monitor?

Do I Need Fuses For The Front End Of My Littelfuse SymCom Voltage Monitor?Read more to view Fusing Considerations for the Littelfuse SymCom Voltage Monitor and other MotorSaver products.
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