77C - 777/77C Series
77C
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Specifications

Input Voltage (V)
100 to 240VAC
Maximum Input Power
10W
Input AC Line Frequency (Hz)
50/60Hz
Output Form
SPDT - Form C
Output Load Rating (VA)
Pilot Duty: 480VA @ 240VAC B300; General Purpose: 10A @ 240VAC
Full Load Amp Range (A)
2 - 25A (looped conductors required); 26 - 90A (direct); 91 - 800A (external CTs required)
Timing Accuracy (%)
5% ± 1s
Rapid Cycle Timer (s)
0 2 - 500s
Restart Delay Range
After Under/Overcurrent: 2 - 500m/s; # of Restarts: Overcurrent: 0 1 oc1 2 oc2 3 oc3 4 oc4 A (Automatic) OCA; Undercurrent: 0 1 2 3 4 A (Automatic)
Repeat Accuracy (%)
Voltage: ±0.5% of nominal voltage; Current: ±1% (direct no external CTs)
Overvoltage Trip Voltage (%)
85V - HV setting
Undervoltage Trip Voltage
LV setting - 264V
Voltage Accuracy (%)
±1%
Overcurrent Trip Point
(20A - 100A) … MULT of 80 - 120% of CT primary
Overcurrent Trip Class
5 J5 10 J10 15 J15 20 J20 30 J30 or Lin (linear)
Undercurrent Trip Point
(0 10 - 98 Amps) … MULT or 40 - 100% of CT primary
Undercurrent Trip Delay (s)
2 - 60s
Current Accuracy (%)
±3% (<100 amps direct)
Ground Fault Accuracy (%)
±15%
Sensor Hole Size
Max conductor size: 0.65 in (with insulation)
Short Circuit (kA)
100kA per UL 10kA per CSA
Surge Protection
IEC: 61000-4-5 Level 3 2kV line-to-line; Level 4 4kV line-to-ground
Protection Class
IP20 NEMA 1
Pollution Degree
3
CT Ratio
1 - 10 conductors or 100 - 800 ratio
Address
A01 - A99
Life
Electrical: 1 x 105 operations at rated load; Mechanical: 1 x 106
Termination Type
7 in.-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)
1.20 lbs (19.2 oz. 544.3 g)