RS Series - Recycling Timer

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Littelfuse Recycle Time Delay Relays
The RS Series is a solid-state, encapsulated, recycling timer designed for tough industrial environments. It is used by many testing labs as a life cycle tester; by others as a cycle controller. The RS Series has separate DIP switch adjustments for the on delay and the off delay. These make accurate adjustment possible the first time, every time. Time delays of 0.1 seconds to 1023 hours are available in 4 ranges.


Operation (Recycling - ON Time First)

Upon application of input voltage, the output energizes and the T1 ON time begins. At the end of the ON time, the output de-energizes and the T2 OFF time begins. At the end of the OFF time, the output energizes and the cycle repeats as long as input voltage is applied.
Reset: Removing input voltage resets the output and time delays, and returns the sequence to the ON time.


Operation (Recycling - OFF Time First)

Upon application of input voltage, the T2 OFF time begins. At the end of the OFF time, the output energizes and the T1 ON time begins. At the end of the ON time, the output de-energizes and the cycle repeats as long as input voltage is applied.
Reset: Removing input voltage resets the output and time delays, and returns the sequence to the OFF time.

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)
Storage Temperature (F/C)Time Delay RangeSample capableCompare
RS1A1112VDC-40° to 85°C (-40°F to 185°F)ON time first: 0.1 - 102.3s in 0.1s increments; OFF: 0.1 - 102.3s in 0.1s incrementsNo
RS2B4424VAC-40° to 85°C (-40°F to 185°F)ON: 1 - 1 023h in 1h increments; OFF time first: 1 - 1 023h in 1h incrementsNo
RS4A11120VAC-40° to 85°C (-40°F to 185°F)ON time first: 0.1 - 102.3s in 0.1s increments; OFF: 0.1 - 102.3s in 0.1s incrementsNo
RS4A12120VAC-40° to 85°C (-40°F to 185°F)ON time first: 0.1 - 102.3s in 0.1s increments; OFF: 0.1 - 102.3m in 0.1m incrementsNo
RS4A13120VAC-40° to 85°C (-40°F to 185°F)ON time first: 0.1 - 102.3s in 0.1s increments; OFF: 1 - 1 023m in 1m incrementsNo
RS4A22120VAC-40° to 85°C (-40°F to 185°F)ON time first: 0.1 - 102.3m in 0.1m increments; OFF: 0.1 - 102.3m in 0.1m incrementsNo
RS4A24120VAC-40° to 85°C (-40°F to 185°F)ON time first: 0.1 - 102.3m in 0.1m increments; OFF: 1 - 1 023h in 1h incrementsNo
RS4A33120VAC-40° to 85°C (-40°F to 185°F)ON time first: 1 - 1 023m in 1m increments; OFF: 1 - 1 023m in 1m incrementsNo
RS4B12120VAC-40° to 85°C (-40°F to 185°F)ON: 0.1 - 102.3s in 0.1s increments; OFF time first: 0.1 - 102.3m in 0.1m incrementsNo
RS6A13230VAC-40° to 85°C (-40°F to 185°F)ON time first: 0.1 - 102.3s in 0.1s increments; OFF: 1 - 1 023m in 1m incrementsNo