777-575-P2 - 777 MRSW Series

Series: 777 MRSW
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Littelfuse Remote Indication and Monitoring
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The 777 Manual Remote Reset Kit allows the 777 line of motor and pump protection products to be manually reset without opening the panel door. Simply connect the 9-pin adapter to the 777 communication port and mount the push-button switch in a convenient location.

Product Literature


Property (Mouseover for details) Value
Input Voltage (V) 500 to 600VAC
Maximum Input Power 10W
Output Form SPDT - Form C
Output Load Rating (VA) Pilot Duty: 480VA @ 240VAC B300; General Purpose: 10A @ 240VAC
Full Load Amp Range (A) 2 - 20A (looped conductors required); 20 - 80A (direct); 90 - 800A (external CTs required)
Timing Accuracy (%) ±0.5s
Rapid Cycle Timer (s) 0 - 999s
Restart Delay Range All faults except undercurrent: 2 - 500m; Undercurrent: 2 - 500m A (Automatic); # of Restarts: All faults except undercurrent: 0 1 oc1 2 oc2 3 oc3 4 oc4 A ocA (Automatic); Undercurrent: 0 1 2 3 4 A (Automatic)
Repeat Accuracy (%) Voltage: ±0.5% of nominal voltage; Current: ±1% (<100 amps direct)
Overvoltage Trip Voltage (%) 451 - 660V
Undervoltage Trip Voltage 450 - 649V
Voltage Unbalance Trip Point (%) 2 - 25% or 999 (disabled)
Voltage Accuracy (%) ±1%
Overcurrent Trip Point (20A - 100A) … MULT of 80 - 140% of CT primary
Overcurrent Trip Class 02 - 60 J02 - J6 0 L00 - L60 or Off
Undercurrent Trip Point (0 10 - 98 Amps) … MULT or 40 - 140% of CT primary
Undercurrent Trip Delay (s) 2 - 999s (standard)
Current Unbalance Trip Point (%) 2 - 50% or 999 (disabled)
Current Accuracy (%) ±3% (<100 amps direct)
Ground Fault Current Trip Point (A) (3 - 20A) … MULT or 12 - 40% of primary CT or OFF
Ground Fault Accuracy (%) ±15%
Sensor Hole Size Max conductor size: 0.65 in (with insulation)
Short Circuit (kA) 100kA
Surge Protection IEC: 61000-4-5 Level 3 2kV line-to-line; Level 4 4kV line-to-ground
Protection Class IP20
Pollution Degree 3
CT Ratio 1 - 10 100 150 200 300 400 500 600 700 800
Address A01 - A99
Life Electrical: 1 x 105 operations at rated load; Mechanical: 1 x 106
Termination Type Torque: 7in-lbs
Mounting Method Surface mount (4 - #8 screws) on 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) 1.56 lbs. (25.0 oz. 707.6 g)
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