Time Mark Corp. Model 441-120V Multi-Stage Motor/Pump Alternator - SPST, 120VAC


The Time Mark Model 441 Multi-Stage Alternator is designed to control the operating sequence of multi-stage motor/pumping systems. It can also be used to maintain the desired level of pressure on air compressor systems. Four motor select DIP switches located on the front panel allow the alternator to control a single-motor/pump, two-motor/pump, three-motor/pump or four-motor/pump system.

The Model 441 will assure that only the necessary motors/pumps are operating, and that the run time for each motor/pump is approximately equal. Motors are sequenced "first-on" and "first-off." If the motor/pumping demand requires only one motor/pump at a time, the alternator will start the next motor/pump in sequence each time an input switch is closed. Input switches may be float switches, pressure switches, flow switches, etc., as required by the application.


  • Model 441-120V = 120VAC (+/-10%), 50/60 Hz
  • Replaces mechanical alternators
  • User selectable for:
  • Single/Duplex/Triplex/Quadraplex Operation
  • Unit Remembers Which Motor/Pump Is Next During Power Loss
  • First-On, First-Off Operation


  • Water supply systems
  • Sewage disposal plant systems
  • Storage tank filling systems
  • Air compressor systems
  • Irrigation systems
  • Water recycling systems
More Information
Features Automatic Alternating
Manufacturer Time Mark Corporation
Power 120V AC
Type Alternating Relays & Controllers
Additional Skus 441-120, 441-120V, 441120, 441120V
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