Littelfuse 77C-LR 77C-LR - 777/77C Series
- MPN: 77C-LR
- UPC: 079458991215
- PPN: LTF-77C-LR
CAD
$725.31
/ EA
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Description
All of the overload relays provide unsurpassed protection by combining overload, underload, and voltage in one package. For standalone applications, the units incorporate a 3-digit LED display that is used for programming, providing real-time operational information and displaying diagnostic codes to aid in troubleshooting a fault condition. The units also feature a communications port that can be used with communication modules listed in the 777 accessories section to form a Modbus, DeviceNet™, Profibus, or Ethernet network. Up to 99 units can be remotely monitored and controlled from a PC, PLC, or SCADA system, and data logging through a PC with the optional Solutions software. This capability allows for a simple, cost-effective way to meet new requirements for arc-flash safety.
Specifications
Key Specifications
- Input Voltage (V)
- 100 to 240VAC
- Input AC Line Frequency (Hz)
- 50/60Hz
- Output Load Rating (VA)
- Pilot Duty: 480VA @ 240VAC B300; General Purpose: 10A @ 240VAC
- Timing Accuracy (%)
- 5% ± 1s
- 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)
- Overvoltage Trip Voltage (%)
- 85V - HV setting
- Voltage Accuracy (%)
- ±1%
- Overcurrent Trip Class
- 5 J5 10 J10 15 J15 20 J20 30 J30 or Lin (linear)
- Undercurrent Trip Delay (s)
- 2 - 60s
- Ground Fault Accuracy (%)
- ±15%
- Short Circuit (kA)
- 100kA per UL 10kA per CSA
- Protection Class
- IP20 NEMA 1
- CT Ratio
- 1 or 2
- Life
- Electrical: 1 x 105 operations at rated load; Mechanical: 1 x 106
- Mounting Method
- Surface mount (4 - #8 screws) on DIN rail mount
- Storage Temperature (F/C)
- -40° to 80°C (-40° to 176°F)
- Dimensions
- 3.05 H x 3.85 W x 5.05 D in. (77.5 x 97.8 x 128.3 mm)
Maximum Input Power10W
Output FormSPDT - Form C
Full Load Amp Range (A)1.0 - 2.5A (loos required); 2.0 - 9.0A (direct)
Rapid Cycle Timer (s)0 2 - 500s
Repeat Accuracy (%)Voltage: ±0.5% of nominal voltage; Current: ±1% (direct no external CTs)
Undervoltage Trip VoltageLV setting - 264V
Overcurrent Trip Point(20A - 100A) … MULT of 80 - 120% of CT primary
Undercurrent Trip Point(0 10 - 98 Amps) … MULT or 40 - 100% of CT primary
Current Accuracy (%)±3% (<100 amps direct)
Sensor Hole SizeMax conductor size: 0.65 in (with insulation)
Surge ProtectionIEC: 61000-4-5 Level 3 2kV line-to-line; Level 4 4kV line-to-ground
Pollution Degree3
AddressA01 - A99
Termination Type7 in.-lbs.
Operating Temperature-20° to 70°C (-4° to 158°F)
Humidity10-95% non-condensing per IEC 68-2-3
Weight (lbs/g)1.20 lbs (19.2 oz. 544.3 g)
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CAD
$725.31
/ EA
Available to Order
Lead times may vary. For an accurate estimate please contact us.
Company Stock:
0
Looking to buy a large quantity?
To View Branch Inventory And Your Custom Pricing
Spec sheet
CAD$725.31/ EA
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