Fixed Speed Three Phase

STP-SCIII - Hero.psd

Fixed Speed Three Phase

The STP-SCIII & STP-SCIIIC controllers provides valuable pump protection and performance features for 3 HP and 5 HP high capacity pumps.

STP-SCIII Box - Highlight.psd


STP-SCIII delivers advanced features compared to standard three-phase motor starters. It constantly monitors for abnormal conditions that could reduce motor life or cause downtime.

Continuous Diagnostics

The STP-SCIII will alert the service technician to the source problems including dry run, extended run, overvoltage, undervoltage, relay fault, voltage/current unbalance, locked rotor, phase loss or open circuit.

Pump Auto-Start

Get “on demand” automatic pump start of up to eight submersible pumps manifolded to the same discharge line. The lead pump starts to satisfy initial demand and additional pumps are started as demand increases, reducing power consumption and extending pump life.

Easy Retrofit

The STP-SCIII is compatible with most existing three-phase submersibles from 3 to 5 hp. Retrofitting existing stations is as simple as replacing the existing three-phase controller or starter with the STP-SCIIII. No additional wiring is required.


  • Enclosure size: 9-1/16" x 7-6/8" x 5½" (230 mm × 196 mm × 140 mm).
  • Compatible with three-phase FE Petro 3 and 5 hp submersibles and most competitive makes.
  • Relay rating: 5 hp.
  • Pump “RUN” indication is provided by flashing green light.
  • Power “ON” indication is provided by steady green light.
  • Flashing red light indicates fault condition. Number of flashes indicates specific fault.
  • Audible alarm alerts operator of fault.
  • Built-in voltage surge protection.
  • Flashing yellow light indicates RS 485 is communicating.
  • RS 485 com port which is provided to connect Smart Controllers to each or to FFS EVO™ Series automatic tank gauge (ATG) for enhanced functionality. When Smart Controllers are connected to the EVO™ Series ATG via Turbine Pump Interface (TPI), share intelligence to further enhance capabilities and run your business as efficiently as possible.


  • Consult factory for applicable approvals.
  • Franklin Fueling Systems is an ISO 9001 Certified Manufacturer.


Model Number Description
5800103300 STP-SCIIIC, three phase 380-415 VAC smart controller
  • One STP-SCIIIC required per submersible, relay rated for 30 Amps.
  • STP-SCIIIC models do not utilise the pump motor thermal overload wiring (blue leads).
  • STP-SCIIIC is compatible with FE Petro 3 and 5 hp submersibles and competitive makes input voltage rated 380-415 VAC three phase.