Thomson Power System- Marathon

Model TS 840 - Transfer Switches


UL 1008/ CSA 178 Certified, 100-800 AMP Single & 3 Phase 240V Max. Rugged, economical solution for the harsh environments of the agricultural industry. Available from 100 amp - 800 amp single and 3 phase 240 volt. Options include Service Entrance rated and Load Distribution. Easy to use TSC 80 ATS controller requires no software programming. UL 1008 listed.

Amperage Range 100A - 800A
Voltage Range: 120/240V or 120/208V
Poles: 2 or 3
Frequency: 50/60Hz
Power Distribution: Single Phase, 3 wire or 3 Phase, 4 wire
Controller: TSC 80
Standard Enclosure: Nema 3R SD (100 - 600A), NEMA 3R DD (800A)
Safety Standard: UL 1008 , CSA C22.2 No. 178
Quality Assurance: ISO 9001 Registered
Warranty: 1 Year


  • Load on Utility & Load on Generator Lights
  • Utility & Generator Source Available Lights
  • Three Phase Voltage Sensing on Utility & Generator Sources
  • Under Frequency Sensor on Generator Source
  • Engine Start Delay Timer 0-60 sec.
  • Engine Cooldown Delay Timer 0-30 min.
  • Engine Warm-up Timer 0-60 sec.
  • Neutral Position Delay 0-60 sec.
  • Utility Return Timer 0-30 min.
  • Engine Start Contact (10A, 120/240VAC res. Form B)
  • Exercise Timer (On or Off Load, Fixed 30 min.)
  • Auxiliary Contact - Utility side (10A, 120/240VAC res. Qty 1, Form C)
  • Auxiliary Contact - Generator side (10A, 120/240VAC res. Qty 1, Form C)
  • Local Utility Power Fail Simulation Test Pushbutton
  • Provision for Remote Load Test/Peak Shave Switch Input
  • NEMA 3R Enclosure
  • Solid Neutral
  • Storage Temperature: -20oC to 70oC (-4oF to 158oF)
  • Operating Temperature: -40oC to 50oC (-40oF to 122oF)
  • Humidity: 95% non-condensing, maximum

OPTIONAL FEATURES: (Specify separately from ATS MODEL CODE when ordering)

Dist2     2 Load Distribution Breakers (Qty 2, 200A, 2 Pole Only)
Dist4     4 Load Distribution Breakers (Qty 4, 200A, 2 Pole Only)
Dist6     6 Load Distribution Breakers (Qty 6, 200A, 2 Pole Only)
SDM      LCD Service Display Module
            - Displays TSC 80 Controller Settings and Timer Adjustments
            - Plug in Connector and Cable
TS-H1    Enclosure Strip Heater c/w Thermostat (120VAC External Power Source Required)
TS-H2    Enclosure Strip Heater c/w Thermostat (Internally Powered from ATS Load)

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