The 777-P2 is a three-phase current and voltage monitor designed to protect motors drawing 2-800 A full load current, with external current transformers required above 90 A. It operates on 200-480 V ac and features a built-in 3-digit LED display for programming and real-time diagnostics. The unit has a 480 VA @ 240 V ac SPDT relay output, supports programmable overload, phase loss, voltage unbalance, and underload protection, and includes remote reset and communication capabilities via Modbus, DeviceNet, Profibus, or Ethernet. It mounts via surface mount with four #8 screws or DIN rail, measures 77.47 mm H × 97.79 mm W × 128.27 mm D, and weighs 1.56 lbs. It complies with UL508, UL1053, CSA C22.2, and IEC 60947-1 standards, operates from -20 °C to 70 °C, and meets IEC 61000-4-2, -3, -4, and -6 ESD and electromagnetic immunity levels.
The 777-P2 three-phase current and voltage monitor provides motor protection with input voltage from 200–480 V ac and motor full load ampere range as follows: 2–20 A (looped conductors required): 20–90 A (direct); 90–800 A (external CTs required).
3-PHASE OLR/200-480V/2-800FL
Industrial Relays ARC-FLASH RELAY 24VDC W/ CC
3-PHASE OLR/200-480V/2-800FL
Motor Saver, 3-Ph, 200-480V, 2-800A
| Littelfuse, Inc. | DigiKey | VAST STOCK CO., LIMITED | Quarktwin Technology Ltd. | Galco Industrial Electronics | |
|---|---|---|---|---|---|
| Product Category | Protective Relays and Monitoring Relays | Protective Relays and Monitoring Relays | Electromechanical Relays | Protective Relays and Monitoring Relays | Protective Relays and Monitoring Relays |
| Product Number | 777-P2 | 5666-777-P2-ND | 777-P2 | 777-P2 | 777-P2 |
| Product Name | Littelfuse 777 Current & Voltage Monitor Provides Exceptional Motor Protection | Protection Relays & Systems | Industrial Relays | Protection Relays & Systems | SYMC Protection Relays |
| Current Sensitive Relay | Undercurrent |
