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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.

The 777-AccuPower is a fully-programmable 3-phase motor and pump protection relay. It allows motor hp rating, full load amps, efficiency and power factor to be entered and will accurately calculate motor output power. This is most useful with mag-drive pumps or process applications where the process power is desired over the utility power. Voltage, current and power measurements can be displayed as well as fault information and setpoints. The built-in display simplifies troubleshooting and allows the user to easily and precisely configure setpoints. The 777-AccuPower can be used with the optional COM 4-20 output module to give an analog signal proportional to output shaft power, the RS485MS-2W (for limited Modbus capabilities, and for use with the RM1000/RM2000) remote displays listed in the 777 accessories section.
Property (Mouseover for details) Value
Input Voltage (V) 190 - 480 Vac
Maximum Input Power 10
Input AC Line Frequency (Hz) 50 / 60
Output Form SPDT - Form C
Output Load Rating (VA) Pilot Duty: 480 VA @ 240 Vac B300; General Purpose: 10 A @ 240 Vac
Full Load Amp Range (A) 2 - 25: 3 phase (looped conductors required); 25 - 90: 3 phase (direct); 80 - 800: 3 phase (external CTs)
Timing Accuracy (%) 5% ±1 s
Rapid Cycle Timer (s) 2 - 500 s
Restart Delay Range 2 - 500 m or A (Automatic)
Repeat Accuracy (%) Voltage: ±0.5% of nominal voltage; Current: ±1% (<100 A direct)
Voltage Accuracy (%) ±1%
Overcurrent Trip Point (20 - 100 A) … MULT of 80 - 140% of CT primary
Overcurrent Trip Class 5; J5; 10; J10; 15; J15; 20; J20; 30; J30
Current Unbalance Trip Point (%) 2 - 25% or 999 (disabled)
Current Unbalance Trip Delay (s) % over setpoint / Trip time: 1% / 30s; 2% / 15s; 3% / 10s; 4% / 7.5s; 5% / 6s; 6% / 5s; 10% / 3s; 15% / 2s
Current Accuracy (%) ±3% (<100 A direct)
Ground Fault Accuracy (%) ±15%
Sensor Hole Size Max conductor size: 0.65 in (with insulation)
HP/kW Accuracy (%) ±3%
Short Circuit (kA) 100
Surge Protection IEC: 61000-4-5 Level 3 2 kV line-to-line; Level 4 4 kV line-to-ground
Protection Class IP20 (finger safe)
Pollution Degree 3
Address A01 - A99 or OP1
Termination Type Torque: 7 in-lbs
Mounting Method Surface mount (4 - #8 screws) or DIN rail mount
Operating Temperature -20° to 70°C (-4° to 158°F)
Storage Temperature (F/C) -40° to 80°C (-40° to 176°F)
Humidity 10 - 95% non-condensing per IEC 68-2-3
Dimensions 3.05 H x 3.85 W x 5.05 D in. (77.5 x 97.8 x 128.3 mm)
Weight (lbs/g) 0 Kg
Check Stock Yes
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