SC4120A - SC Series

Series: SC3/SC4 Questions? Contact Littelfuse Support
Littelfuse Sequencing Controls
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The SC3/SC4 Series are solid-state 3 or 4 channel, chasers designed for sequential three or four circuit flashing of incandescent lamp loads. Unlike electromechanical chasers, there are no contacts to arc, wear, and eventually fail. Fixed or adjustable rates of 30 to 300 operations per minute.

Sequential 3 or 4 circuit flashing of incandescent loads with equal time delays for each load. Upon application of input voltage, Load 1 is energized. At the end of the time delay, Load 1 de-energizes and Load 2 energizes. At the end of the time delay, Load 2 de-energizes and Load 3 energizes. This cycle continues until input voltage is removed. The set time delay (rate) is the timing for the whole cycle, for all 3 or 4 loads (output contacts).
Reset: Removing input voltage resets the unit and cycle.

Property (Mouseover for details) Value
Input Voltage (V) 120VAC
Input Tolerance (%) ±15%
Input AC Line Frequency (Hz) 50/60Hz
Humidity 95% relative non-condensing
Output Type Solid state
Output Load Rating (VA) 1A steady state per output
On/Off Ratio (%) 30 operations per minute fixed
Circuitry Encapsulated
Insulation Resistance ≥100 MΩ
Dielectric Breakdown ≥2000V RMS terminals to mounting surface
Operating Temperature -20° to 60° C (-4° F to 140° F)
Storage Temperature (F/C) -40° to 85°C (-40°F to 185°F)
Mounting Method Surface mount with two #6 (M3.5 x 0.6) screws
Termination Type 0.25 in. (6.35mm) male quick connect terminals
Dimensions 3.50 x 2.50 x 1.22 in. (88.9 x 63.5 x 31.0mm)
Weight (lbs/g) ≌5.4oz (153g)
Sample capable No