Littelfuse
77C
77C - 777/77C Series
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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)
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