LLC Series - Liquid Level Controls

Littelfuse Pump Controls and Liquid Level Controls
Roll Over to Zoom
The LLC5 provides dual probe conductive liquid level control in a convenient octal plug-in package. Models are available for fixed fill or drain operation. Isolated, pulsed DC voltage on the probes prevents electrolytic plating. Less than 1 mA of current is used to sense the presence of conductive liquid between the probes and common. On adjustable units, the sensitivity adjustment eliminates false tripping caused by floating debris and foaming agents.


Operation
Drain (Pump-Down Mode): When the liquid level rises and touches the high level probe, the output relay and LED energize and remain energized until the liquid level falls below the low level probe. The output relay and LED de-energize and remain de-energized until the liquid rises and touches the high level probe.
Fill (Pump-Up Mode): When the liquid level falls below the low level probe, the output relay and LED energize and remain energized until the liquid level rises and touches the high level probe. The output relay and LED de-energize and remain de-energized until the liquid level again falls below the low level probe.

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)
Output
Form
Termination TypeMounting MethodDimensionsWeight (lbs/g)Compare
LLC52AA24VACIsolated SPDTOctal 8-pin plug-inPlug-in socket3.01 x 2.39 x 1.78 in. (76.5 x 60.7 x 45.2mm)≅6.0oz (170g)
LLC52BA24VACIsolated SPDTOctal 8-pin plug-inPlug-in socket3.01 x 2.39 x 1.78 in. (76.5 x 60.7 x 45.2mm)≅6.0oz (170g)
LLC54AA120VACIsolated SPDTOctal 8-pin plug-inPlug-in socket3.01 x 2.39 x 1.78 in. (76.5 x 60.7 x 45.2mm)≅6.0oz (170g)
LLC54AAS120VACIsolated SPDTOctal 8-pin plug-inPlug-in socket3.01 x 2.39 x 1.78 in. (76.5 x 60.7 x 45.2mm)≅6.0oz (170g)
LLC54AF10120VACIsolated SPDTOctal 8-pin plug-inPlug-in socket3.01 x 2.39 x 1.78 in. (76.5 x 60.7 x 45.2mm)≅6.0oz (170g)
LLC54BA120VACIsolated SPDTOctal 8-pin plug-inPlug-in socket3.01 x 2.39 x 1.78 in. (76.5 x 60.7 x 45.2mm)≅6.0oz (170g)
LLC54BAS120VACIsolated SPDTOctal 8-pin plug-inPlug-in socket3.01 x 2.39 x 1.78 in. (76.5 x 60.7 x 45.2mm)≅6.0oz (170g)
LLC56AA230VACIsolated SPDTOctal 8-pin plug-inPlug-in socket3.01 x 2.39 x 1.78 in. (76.5 x 60.7 x 45.2mm)≅6.0oz (170g)

  • Showing 2 items