Eaton FT70 Wye-Delta Open Transition Fire Pump Controller with Automatic Transfer Switch

The Eaton FT70 is the wye-delta (star-delta) open transition model with automatic transfer switch in Eaton's EPCT Fire line of electric fire pump controllers. It combines a full-service, reduced-voltage wye-delta controller and a fire-pump-rated automatic transfer switch in one assembly, for fire pumps with motors designed for wye-delta starting. Every FT70 is built to order, so we quote each one to your motor, voltage, enclosure and options. Call (786) 336-5783 or send us your catalog number or spec section.

How the FT70 works

The FT70 connects the pump motor windings in a wye configuration to start, then switches them to a delta configuration to run. This significantly reduces the motor's starting current, and wye-delta is the only starting method with a starting torque efficiency of 100%. In open transition, the motor is briefly disconnected while the windings switch from wye to delta. The FT80 closed transition keeps the motor connected through the changeover. Wye-delta starting requires a motor with its windings brought out for wye-delta connection.

The integrated automatic transfer switch moves the fire pump to an alternate power source, such as a generator or second utility feed, when the normal source fails, and the EPCT Fire touchscreen manages both the controller and the transfer switch from one display. FT70 controllers are supplied as dual utility controllers and meet FM 1321/1323 approvals. Other models with transfer switch include the FT30 across-the-line, FT40 part winding, FT60 autotransformer and FT90 soft start.

EPCT Fire features

• 7" color touchscreen: 800x480 high-resolution display, a fast processor that reduces input lag, and a simplified tab system for navigation and programming
• USB port: download history, statistics, configuration, diagnostics and start-up files; upload a configuration to reduce programming time; update firmware
• Event history: logs up to 65,000 time-stamped events, with on-screen filtering for troubleshooting
• Programmable output relays for common alarm, power/phase failure, phase reversal and pump run
• Optional boards:
  • Relay board: four (4) one form-C programmable output relays
  • MODBUS board: output communication via RS422 or RS485
  • Secondary 4-20mA device board: additional connections for external pressure transducers, temperature sensors and similar devices
  • Alarm board: a supervisory powered alarm output
• Enclosures: UL Type 2 (drip-proof) standard; Type 3, 3R, 4, 4X and 12 available
• Standards: built to NFPA 20, listed to UL 218, and FM 1321/1323 approved. See the bid submittal for the full list of approvals.

FT70 catalog numbers explained

Every EPCT Fire catalog number follows the same pattern. For example, FT70-200-D-L1-OP2 is a 200 HP, 480V/60Hz wye-delta open transition controller with transfer switch, English labels and the optional MODBUS communication board.

Common options

See the full EPCT Fire option selection matrix for every code.

FT70, FD70 or FD70 with FPATS?

If the fire pump doesn't need automatic transfer, the stand-alone FD70 wye-delta open transition controller is the simpler option. Where the controller and transfer switch need to be separate, an FD70 can be paired with an FPATS stand-alone transfer switch.

What we need for a quote

• Motor horsepower, and confirmation the motor is suitable for wye-delta starting
• Line voltage, phase and frequency
• Alternate power source (generator or second utility feed)
• Enclosure type
• Options and label language
• Withstand rating, if your project requires high or intermediate

Have a full catalog number, a spec section or a photo of an existing nameplate? Send that instead and we'll match it. Call (786) 336-5783 or request a quote.

Bid submittal and documents

• EPCT Fire – FT70 – Bid Submittal (PDF, eaton.com)
• EPCT Fire option selection matrix

Replacement parts

Keeping an existing EPCT Fire controller in service? Shop EPCT Fire replacement components, transfer switch components, or browse all Eaton fire pump controller replacement parts.

Installation, wiring and commissioning should follow Eaton's instruction manual and NFPA 20 and be performed by qualified personnel.