FS126RC - Tower and Obstruction Lighting Controls Series

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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 FS100 Series (low amp) may be used to control inductive, incandescent or resistive loads. This series offers a 1A (fullwave) or a 2A (halfwave) steady state, 10A inrush solid-state output and may be ordered with an input voltage of 24 or 120VAC. The FS100 Series offers a factory fixed flash rate of 75 FPM or may be ordered with a fixed, custom flash rate ranging from 45 to 150 FPM. Ideal for OEM applications where cost is a factor.


Operation Upon application of input voltage, the T2 OFF time begins. At the end of the OFF time, the T1 ON time begins and the load energizes. At the end of T1, T2 begins and the load de-energizes. This cycle repeats until input voltage is removed.
Reset: Removing input voltage resets the output and the sequence to T2.

Property (Mouseover for details) Value
Input Voltage (V) 120 V ac
Input Tolerance (%) ±15%
Input AC Line Frequency (Hz) 50/60
Humidity 95% relative non-condensing
Output Load Type Inductive resistive or incandescent
Output Load Rating (VA) Fullwave AC: 1 A steady state
Flash Rate (fpm) 75 ±20%
On/Off Ratio (%) ≌50%
Circuitry Encapsulated
Inush 10
Operating Temperature -20° to 60°C (-4° to 140°F)
Storage Temperature (F/C) -40° to 85°C (-40° to 185°F)
Mounting Method Removable mounting bracket to use on #8 (M4 x 0.7) screw
Termination Type 18 AWG (0.82 mm²) wires - 6 in. (15.2 cm)
Dimensions 1.5 H x 0.94 W in. (38.1 x 23.9 mm)
Weight (lbs/g) 0 Kg
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
FS126RC AC LOW COST FLASHER RoHS No 02/15/2021 PbFree No 02/15/2021 CoC_RoHS9_FS126RC REACH197_Declaration_with_Pb_FS126RC Yes
02/15/2021
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