Eaton FD70 Wye-Delta Open Transition Fire Pump Controller (EPCT Fire)

The Eaton FD70 is the wye-delta (star-delta) open transition model in Eaton's EPCT Fire line of electric fire pump controllers. It's a full-service, reduced-voltage controller for electric fire pumps with motors designed for wye-delta starting. Every FD70 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 wye-delta open transition starting works

The FD70 connects the pump motor windings in a wye configuration to start, then switches them to a delta configuration to run. This reduces the motor's starting current significantly, 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 FD80 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 FD70 can be programmed for fully automatic or semi-automatic operation.

Other starting options include the FD30 across-the-line, FD40 part winding, FD60 autotransformer and FD90 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 and listed to UL 218. See the bid submittal for the full list of approvals.

FD70 catalog numbers explained

Every EPCT Fire catalog number follows the same pattern. For example, FD70-125-D-L1 is a 125 HP, 480V/60Hz wye-delta open transition controller with English labels in the standard enclosure.

Common options

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

FD70 or FT70?

The FD70 is a stand-alone controller. If the fire pump also needs automatic transfer to an alternate power source, choose the FT70, which combines the wye-delta open transition controller and a fire-pump-rated transfer switch in one assembly. You can also pair an FD70 with a separate 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
• 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 – FD70 – 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 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.