LLC842F103M - LLC8 Series

Series: LLC8
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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The LLC8 Series is a low cost, single-probe conductive liquid level control designed for low liquid level cutoff protection. It offers a factory fixed time delay of 1 - 60s and is available for input voltages of 24, 120, or 230VAC. LED indicator illuminates whenever the LLC8’s isolated, 10A, SPDT output relay is energized. Sense resistance is fixed from 5K - 250K?. Available with manual/automatic reset or a special manual reset with a power outage feature that auto resets the unit when power is restored and the water level is acceptable. 24 and 120VAC units are UL recognized as limit switches under UL353 (230VAC units are UL 508) and CSA certified under Standard 14.


See datasheet for operation and reset details.

Property (Mouseover for details) Value
Input Voltage (V) 120 Vac
Input Tolerance (%) -0.3
Input AC Line Frequency (Hz) 50 / 60
Output Type Electromechanical relay
Output Form Isolated SPDT
Output Load Rating (VA) 10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac
Time Delay Range 2 s fixed
Time Delay Tolerance (%) ±20%
Reset Time (ms) Manual / automatic reset
Repeat Accuracy (%) ±10%
Sense Voltage 12 Vac at probe terminals
Sense Resistance (Ohms) 103
Sense Resistance Tolerance ±10%
Control Type Resistance sensing for conductive liquids with time delay
Isolation Voltage (V) ≥2500 Vrms input to output
Surge Protection IEEE C62.41-1991 Level A
Termination Type Electrical: 0.25 in. (6.35 mm) male quick connect terminals; Reset switch and probes: 0.187 x 0.03 in (4.75 x 0.76 mm) male quick connect terminals
Mounting Method 0.50 in. (12.7mm) nylon standoffs with three #6 (M3.5 x 0.6) screws
Operating Temperature -40° to 60°C (-40° to 140°F)
Storage Temperature (F/C) -40° to 80°C (-40° to 176°F)
Humidity 95% non-condensing
Dimensions 2.5 H x 2.19 W x 1.88 D in. (63.5 x 55.6 x 47.8 mm)
Weight (lbs/g) 0 Kg
Check Stock Yes
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