SSAC Relays, TSS Series
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SSAC Relays, TSS Series
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Item Number
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Product Details


Relays, TSS Series
Item #
Time Delay Relay

TSS Series Information

  • Expands or Decreases Switch Closures
  • Momentary or Maintained Initiate Switch
  • Totally Solid State
  • Encapsulated to Protect Against Shock & Vibration
  • Fixed or Adjustable Delays from 0.05‑600s in 4 Ranges
The TSS is a totally solid‑state timing module. Its 1A rated, solid‑state output provides an excellent method of time control for exposures, dispensing, or for increasing or decreasing a switch closure. Time delays from 0.05 to 600 seconds, in 4 ranges, cover 90% of all OEM applications. Factory calibration of fixed delays is ±5% and the repeat accuracy is ±2%. The TSS can be surface mounted with a single screw, or snapped on a 35mm DIN rail using the P1023‑20 accessory adaptor.

Operation (Single Shot): Voltage must be applied before and during timing. Upon momentary or maintained closure of the initiate switch, the output energizes for a measured interval of time. At the end of the delay, the output de‑energizes. Opening or reclosing the initiate switch during timing has no affect on the time delay. The output will energize if the initiate switch is closed when input voltage is applied. Reset: Reset occurs when the time delay is complete and the initiate switch opens. Loss of input voltage resets the time delay and output.

  • ±2% Repeat Accuracy
  • ±5% Factory Calibration


Manufacturer Part NumberTSS221
Item NumberTSS221
Product SeriesTSS
Family SeriesSSAC Relays, TSS Series
Mode of OperationOne-Shot
Mounting TypeSurface
Time Range AdjustmentRemote
Timing Range0
Max Time3 s
Time Tolerance5 %
Time Range (Seconds)0-1, 0-2, 0-3
Coil Voltage24 VAC
Nominal Coil Voltage24 VAC
Contact Rating (A)1 A
Termination0.250 in Flat Blade
ApprovalsCE, CSA, UL
Net Weight0.15 lbs
Gross Weight0 lbs
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