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Thomson TS870-TCP Auto Transfer Sw (3Ph, 150A)


SKU: TS873A0150A1C-x-6-x-KKAA-TCP Categories , Tag Brand:
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This Thomson TS870-TCP Automatic Transfer Switch is ideal for transferring commercial & industrial three phase loads up to 150A. The TCP Connection Plate allows for quick camlock connections to a temporary generator.


  • Employs two mechanically interlocked power switching units with a micro- processor based controller.
  • Automatically starts generator and transfers system load to generator supply in the event of a utility supply failure.
  • Automatically re-transfers back to the utility supply following restoration of the utility power source to within normal operating limits.
  • All load transfer sequences are “Open Transition” (i.e. “break-before-make”) with adjustable neutral position delay to ensure adequate voltage decay for preventing out of phase transfers.
  • Solid Neutral standard on 4 wire systems. (Please inquire about other options.)
  • Fully enclosed silver alloy contacts provide high withstand rating & 100% continuous current rating.
  • 3 cycle short circuit current withstand tested.
  • 10 cycle 6X overload current rating.
  • Completely separate utility and generator side power switching units.
  • Not damaged if manually switched while in service.
  • Safe manual operation permits operation under adverse conditions.
  • Heavy duty brushless gear-motor and operating mechanism provide mechanical interlocking and extreme long life.
  • Superior serviceability with all mechanical and control devices visible and front-accessible, all control wires and power busses are front-accessible, and a plug-in TSC 7320 Transfer Controller.
  • ISO 9001 registered for quality assurance.
  • Seismic Certified for installation and operation per the following requirements: IBC 2012 – Section 13, Occupancy Category IV; ASCE7-05 Region 3 (minimum SS=200%).
  • Certified to CSA 178 & UL 1008 Standards.
  • NEMA 1 indoor standard. Optional NEMA 3R outdoor enclosure also available. (See Option below for other available enclosures.)
  • Note: Molded case circuit breakers or fuses with overcurrent protection are required upstream of the transfer switch.
  • Not Service Entrance Rated.


  • Enables your facility to quickly and safely receive backup power when utility power is interrupted.
  • Ideal for temporary mobile or rental generator applications.
  • Allows for quick camlock connections to the generator.
  • Eliminates the need for a separate tap box.
  • Factory installed.
  • Certified with the transfer switch to UL 1008 supplemental SB.


  • Isolation plug permits disconnecting control circuits from all power sources.
  • 2.3” back-lit LCD text display for monitoring Utility/Generator voltage, system frequency, operation status, and alarms.
  • Five key menu navigation.
  • Front-panel editing with PIN protection.
  • Customizable status screens.
  • Load on Utility & Load on Generator indication.
  • Utility & Generator Source available indication.
  • 3 Phase Voltage sensing on Utility & Generator Sources.
  • Generator AC frequency sensing.
  • Utility under voltage control setpoint 50 – 95% (adjustable).
  • Generator under voltage control setpoint 50 – 95% (adjustable).
  • Generator under frequency control setpoint 70 – 90% (adjustable).
  • Engine warm-up timer 0-60 min. (adjustable).
  • Utility return timer 0-60 min. (adjustable).
  • Engine start (mains transient) delay timer 0-30 sec. (adjustable).
  • Engine cooldown timer 0-60 min. (adjustable).
  • Neutral position delay timer 0-120 sec. (adjustable).
  • Load Disconnect Contact (LDC) for pre/post transfer control to signal external building systems such as elevators during transfer operations.
  • Up to 16 different date and time schedules for On-load or Off-load Generator exercising.
  • Real-time clock provides accurate event logging.
  • Data logging.
  • Five Programmable Outputs.
  • Five pre-programmed outputs for ATS functionality: Load on Utility, Load on Gen, Load Disconnect Contact (LDC), Fail to Transfer (FTT), and ATS Not in Auto.
  • Local and remote utility power fail simulation test.
  • Engine start contact (8A, 120/250VAC resistive max.).
  • Automatic force transfer to alternate supply should load voltage become de-energized.
  • 24VDC control power.
  • Remote Load Test/Peak Shave Input.
  • Under/Over Frequency Protection- Utility and Generator Sources.
  • 3 Phase Over Voltage Protection – Utility and Generator Sources.
  • Phase Sequence and Phase Rotation Protection between Utility and Generator Sources.
  • Voltage Phase Loss/Unbalance Protection.
  • Programmable Inputs (Quantity 8 Digital Input-voltage free input).
  • ATS Generator Bus Power Metering Capability (Amp, Volt, Freq, kW, kVA, PF).
  • RS485 Modbus Remote Communication Port (Modbus Serial RTU).
  • Serviceable Plug-in Connectors.


TS870 Brochure

TS870 Manual

TSC7320 Controller Manual

TS870 100-800A Quick Start

TS870 100-800A Schematic

TS870 Warranty

MORE OPTIONS (Call for Pricing)


  • AUX-BG – Generator Bypass Auxiliary Contact.
  • AUX-BU – Utility Bypass Auxiliary Contact.
  • KOTS-DSE – Key Operated Test Switch- Auto/Off/Engine Start/Test- includes DSE2130 module.
  • R02157 – Programmable Relay Output Expansion Module – Includes eight 2A Resistive 30VDC rate relays – four NO an four Form C Contacts.
  • TS-STG – 24Vdc or 120VAC Shunt Trip Generator Switch (external power source required).
  • TS-STU – 24Vdc or 120VAC Shunt Trip Utility Switch (external power source required).


  • RA7320 (DSE2548) – Remote Annunciator with eight configurable LEDs. Works up to 0.6 miles from the ATS TSC7320 controller. Up to ten modules can be daisy chained.
  • RD7320 (DSE2520) – Remote Display – up to three display modules can be connected to the TSC7320.
  • EMB-TCP/IP (DSE855) – Ethernet ModbusTM Remote Communication Port (ModbusTM TCP).


  • Other Enclosures: NEMA 4X Stainless Steel, and NEMA 12.
  • LCK – Enclosure Lockable Door (Single point T-Handle lock).
  • 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).


  • TCP – Transfer Switch Connection Plate for Generator Supply (camlocks).
  • TS-SS – Internal Multi-Voltage Selector Switch (208V/240V/480V).
  • LSC – Load Shed – 5-Stage (requires CTK option).


  • LPM-DSE – Transfer Switch Load Power Metering CT Kit (Amp, Volt, Freq, kW, kVA, PF) **Requires CT Kit.
  • CTKxxxx – Current Transformer Kit. Specify CT size: 0100, 0150, 0250, 0400, 0600, 0800, 1200. Require GPM option.
  • MUP – Multifunction Utility Protective Relay – Basler IPS100 (Protection Functions 27, 32, 47, 50/51, 67, 81O/U (Note: May be required by local utility for Momentary CT applications. Please inquire for other makes and models.).


  • SPD – Surge Protection Device.
Model Number



VAC (4-Wire System)



Withstand Rating w/ Circuit Breaker

Withstand Rating w/ Fuse

Lugs per Phase

Cabinet Type

Service Entrance Rated

Full Dimensions HxWxD (inches)


Limited Warranty


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