TSB Series Interval Solid-State Output Timers

The TSB Series Interval Solid-State Output Timers from the ATC Diversified Electronics division of Marsh Bellofram are a family of rugged, high-reliability interval solid-state output time delay relays (TDRs).  The time delay begins when power is applied to the timer. Upon completion of the delay period, the load de-energizes. Reset during or after the delay period is accomplished by removal of the input voltage.



  • Timing begins when voltage is applied
  • Three input terminals
  • Totally encapsulated


  • Industrial machinery and equipment
  • Conveyor belts
  • Exhaust fans
  • Heating systems
  • Lubricators
  • Pump and motor controls
  • Flashing light control
  • Engine auto start control