Littelfuse 777-HVR-SP, 77C Series, Single-Phase Current & Voltage Monitor, 100-240VAC, 2-800A (external CTs required above 90A), Provides 470VA @ 600 V ac output SPDT relay contacts. For systems with no control power transformer

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The single-phase 77C unit is a fully-programmable, electronic overload relay designed to protect any motor drawing 2-800 full load A (external CTs are required above 90 A). Common applications include conveyor systems, HVAC equipment, saws and grinders, fan motors, and almost any pumping application. The 77C and 777-HVR-SP (family of products) are for single-phase 100-240 V ac applications. All of the overload relays provide unsurpassed protection by combining overload, underload, and voltage in one unit. 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. These 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. Applications• Conveyor systems• HVAC equipment• Saws and grinders• Fan motors Pre-order 6-8 Weeks Specifications Functional Characteristics Frequency 50/60 Hz TC- Overcurrent Trip Class (77C, 777 non-Plus Series units) 5, 10, 15, 20, 30 (J prefix enables jam protection feature) Output Characteristics Output Contact Rating (SPDT - Form C) Pilot duty rating 480 VA @ 240 V ac, B300General purpose 10 A @ 240 V acPilot duty rating for HVR models 470 VA @ 600 V ac, B600 General Characteristics Ambient Temperature Range Operating -20 °C to 70 °C (-4 °F to 158 °F)Storage -40 °C to 80 °C (-40 °F to 176 °F) Accuracy Voltage ±1 %Current ±3 %( Show more