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Thomson TS840

Thomson TS 840 Automatic Transfer Switches are designed for agricultural, telecom, and light industrial applications up to 800A. Available in Single Phase 120/240V, and Three Phase 120/208V or 120/240V. Features include:

  • Open Transition configuration (break-before make) with adjustable neutral position delay to ensure adequate voltage decay to prevent out of phase transfers.
  • Fully enclosed silver alloy contacts provide high withstand rating & 100% continuous current rating. Three cycle short circuit current withstand.
  • Completely separate utility and generator side power switching units.
  • Heavy duty brushless gear-motor and operating mechanism provide mechanical interlocking and extreme long life.
  • Safe manual operation permits operation under adverse conditions.
  • TSC 80 microprocessor based controller for voltage, frequency, control, and timing functions.
  • NEMA 3R outdoor enclosure.
  • UL 1008 Listed and CSA C22.2 No. 178.
  • Service Entrance (SE) rated models available.

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