The 777-HVR-P2 is a three-phase current and voltage monitor designed for motor protection in 340-480 V ac applications, with a full load current range of 2-800 A requiring external CTs above 90 A. It features a 470 VA @ 600 V ac output SPDT relay contact, intended for use without a control power transformer (CPT) in 480 V systems. The device includes a built-in 3-digit LED display for programming and diagnostics, supports remote reset and communications via Modbus, DeviceNet, Profibus, or Ethernet, and provides protection against overload, phase loss, voltage unbalance, and underload. It is mounted via surface mount or DIN rail, measures 77.47 mm H × 97.79 mm W × 128.27 mm D, and weighs 707.6 g. It meets UL508, CSA C22.2, and IEC 60947-1 standards, with an IP20 rating and operating temperature range of -20 °C to 70 °C.
The 777-HVR-P2 three-phase current and voltage monitor provides motor protection with input voltage from 340–480 V ac and full load ampere range as follows: 2–20 A (looped conductors required); 20–90 A (direct); 90–800 A (external CTs required).
3-PH OLR/340-480V/ 2-800FLA/
MOTOR SAVER, 380-480VAC/9-90A
Industrial Relays 3-PH OLR/340-480V/ 2-800FLA/
| Littelfuse, Inc. | Quarktwin Technology Ltd. | Galco Industrial Electronics | VAST STOCK CO., LIMITED | |
|---|---|---|---|---|
| Product Category | Protective Relays and Monitoring Relays | Protective Relays and Monitoring Relays | Protective Relays and Monitoring Relays | Electromechanical Relays |
| Product Number | 777-HVR-P2 | 777-HVR-P2 | 777-HVR-P2 | 777-HVR-P2 |
| Product Name | Littelfuse 777 Current & Voltage Monitor Provides Exceptional Motor Protection | Protection Relays & Systems | SYMC Protection Relays | Industrial Relays |
| Current Sensitive Relay | Undercurrent |
