Littelfuse
3554005
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Description
The 355 uses microcontroller technology to monitor incoming voltage and de-energize its output relay if power problems exist. The 355 can protect motors from damage caused by single-phasing, high and low voltage, phase reversal and voltage unbalance. It has four diagnostic LEDs that clearly show overvoltage, undervoltage, voltage unbalance, reverse-phase and normal conditions. The 355-200 is equipped with a heavy-duty 10A general purpose SPDT relay. The 355-400 and 355-600 are equipped with a 470VA @ 600VAC pilot duty SPDT relay. A high voltage (600V) DPDT relay output option is available with the 400V model.- Part Number
- 3554005
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Specifications
- Input Voltage (V)
- 380 to 480VAC
- Maximum Input Power
- 6W
- Input AC Line Frequency (Hz)
- 50/60Hz (50Hz will increase all delay timers by 20%.)
- Output Form
- DPDT
- Output Load Rating (VA)
- Pilot Duty: 470VA @ 600VAC; General Purpose: 10A
- Restart Delay Range
- After a Fault or power loss: Manual 2 - 300s adjustable
- Repeat Accuracy (%)
- ±0.1%
- Trip Delay Range
- Under/Over Voltage and Unbalance: 2 - 30s adjustable; Single-phasing Faults (>25%UB): 2s
- 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%
- Termination Type
- Torque: 7in-lbs; Wire Size: 12-18AWG
- Mounting Method
- #8 screws
- Operating Temperature
- -40° to 70°C (-40° to 158°F)
- Storage Temperature (F/C)
- -40° to 80°C (-40° to 176°F)
- Dimensions
- 2.93 in H x 5.27 in W x 2.95 in D (74.4 x 133.9 x 74.9 mm)
- Weight (lbs/g)
- 0.94 lb. (15.0 oz. 426.4 g)
Documents
Data Sheet
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