Littelfuse
460-14
1 / 1
Description
This unique microcontroller-based voltage and phase-sensing device constantly monitors the 3-phase voltages to detect harmful power line conditions such as low, high, and unbalanced voltage, loss of any phase, and phase reversal. When a harmful condition is detected, the 460 output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level for a specified amount of time (restart delay). The trip and restart delays prevent nuisance tripping due to rapidly fluctuating power line conditions. All 460 models feature adjustable 1-30 second trip delay, 1-500 second restart delay, 2-8% voltage unbalance trip point, and one form C contact except where noted.- Part Number
- 460-14
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Specifications
- Input Voltage (V)
- 190 to 480VAC
- Maximum Input Power
- 6W
- Input AC Line Frequency (Hz)
- 50/60Hz (50Hz will increase all delay timers by 20%.)
- Output Form
- 1 Form A and 1 Form B
- Output Load Rating (VA)
- Pilot Duty: 360VA @ 240VAC B300; General Purpose: 8A @ 240VAC
- Restart Delay Range
- 1 - 500s adjustable
- Trip Delay Range
- Under Over and Unbalanced Voltage: 1 - 30s adjustable; Single-Phase Faults (>25%UB): 1s fixed
- Trip Point Accuracy (%)
- ±1%
- Overvoltage Trip Voltage (%)
- 110%
- Overvoltage Reset Voltage (%)
- 107%
- Undervoltage Trip Voltage
- 90%
- Undervoltage Reset Voltage (%)
- 93%
- Voltage Unbalance Trip Point (%)
- 2 - 8% adjustable
- Voltage Unbalance Reset (%)
- Trip setting minus 1% (5-8%) or Trip setting minus 0.5% (2-4%)
- Protection Class
- IP20 NEMA 1 (finger safe)
- Termination Type
- Torque: 6in-lbs; Wire: Stranded or solid 12-20AWG one per terminal
- Mounting Method
- 35mm DIN rail or Surface Mount (#6 or #8 screws)
- 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
- 3.50 in H x 2.08 in W x 2.35 in D (88.9 x 52.9 x 59.7 mm)
- Weight (lbs/g)
- 0.7 lb. (11.2 oz. 317.5 g)
Documents
Data Sheet
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