Littelfuse
LLC44B20A
1 / 1
Description
Operation Drain (Pump-Down Mode): When the liquid level rises and touches the probe, the time delay begins. This time delay prevents rapid cycling of the output relay and its load. At the end of the time delay, the output relay energize and remain energized until the liquid level falls below the probe level. The output relay de-energize and remain de-energized until the liquid rises and touches the probe. Fill (Pump Up Mode): When the liquid level falls below the probe, the time delay begins. This time delay prevents rapid cycling of the output relay and its load. At the end of the time delay, the output relay energize and remain energized until the liquid level rises and touches the probe. The output relay then de-energize and remain de-energized until the liquid level again falls below the probe level.- Part Number
- LLC44B20A
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Specifications
- Input Voltage (V)
- 120VAC
- Input Tolerance (%)
- -0.3
- Input AC Line Frequency (Hz)
- 50/60Hz
- Output Type
- Electromechanical relay
- Output Form
- Isolated SPDT
- Output Load Rating (VA)
- 4A resistive @ 240VAC and 28VDC; 1/10hp @ 240VAC
- Time Delay Range
- 20s fixed
- Sense Voltage
- 12VAC at probe terminals
- Sense Resistance (Ohms)
- Adjustable to 250kΩ
- Sense Resistance Tolerance
- 1K ±500 Ω at low end; 250K ±25% at high end
- Control Type
- ON/OFF (single level) resistance sensor with built-in time delay to prevent rapid cycling
- Isolation Voltage (V)
- ≥1500V RMS between input output and probe
- Surge Protection
- IEEE C62.41-1991 Level A
- Termination Type
- Octal 8-pin plug-in
- Mounting Method
- Plug-in socket
- Operating Temperature
- -20° to 60°C (-4°F to 140°F)
- Storage Temperature (F/C)
- -40° to 80°C (-40°F to 176°F)
- Dimensions
- 2.91 x 2.39 x 1.78 in. (73.9 x 60.7 x 45.2mm)
- Weight (lbs/g)
- ≅6.0oz (170g)
Documents
Data Sheet
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