Autonics SPR3-4150TFF Power Controller
SPR3-4150TFF is an Autonics Power Controller for three-phase 440VAC systems with 150A rated load current industrial automation applications. Manufactured by Autonics, this controller is part of Autonics Power Controllers within the SPR3 Series, featuring three-phase control, a 3-digit 7-segment LED display, 100–240VAC power supply, and max. 32VA power consumption.

| Brand | Autonics |
| Product Type | Power Controller |
| Model Number | SPR3-4150TFF |
Autonics SPR3-4150TFF Power Controller – Technical Specifications
| Specification | Value |
|---|---|
| Control phase | 3-phase |
| Rated load voltage | 440VAC~ |
| Rated load current | 150A |
| Display method | 3-digit 7-segment LED |
| Control input | ᆞAuto control: DC4-20mA, 1-5VDC @(=), ON/OFF contact (no-voltage input), pulse voltage (5-12VDC @(=)) ᆞManual control: outside adjuster (10kΩ), inside adjuster (output limit) |
| Digital inputs | RUN/STOP switching, AUTO/MANU switching, RESET |
| Output_Alarm | 250VAC~ 3A, 30VDC @(=) 3A, 1c resistive load |
| Output_Communication | RS485 communication output (Modbus RTU method), max. connection: 31 units |
| Cooling method | Forced air cooling (with the cooling fan) |
| Control method | ᆞPhase control: normal control mode, constant current/constant voltage/constant power feedback control modeᆞCycle control: fixed cycle control modeᆞON/OFF control |
| Applied load | ᆞPhase control, ON/OFF control: resistance load, inductive loadᆞCycle control: resistance load |
| Output range | Phase control: 0 to 98%, Cycle control: 0 to 100%, ON/OFF control: 0 to 100% |
| Power supply | 100-240VAC~ 50/60Hz |
| Min. load current | 1A |
| Power consumption | Max. 32VA |
| Insulation resistance | Over 200MΩ (at 500VDC megger) |
| Dielectric strength | 2,000VAC~ 50/60Hz for 1 min (between input terminals and power terminals) |
| Output leakage current | Max. 10mArms |
| Noise immunity | ±2kV the square wave noise (pulse width: 1㎲) by the noise simulator |
| Memory Protection | ≈ 10 years (non-volatile semiconductor memory type) |
| Vibration | 0.75 mm amplitude at frequency of 5 to 55 Hzin each X, Y, Z direction for 2 hours |
| Vibration_Malfunction | 0.5mm amplitude at frequency of 5 to 55Hz in each X, Y, Z direction for 10 min |
| Environment_Ambient temperature | -10 to 55℃, storage: -20 to 80℃ |
| Environment_Ambient humidity | 35 to 85% RH, storage: 35 to 85% RH |
| Allowable voltage range | 90 to 110% of rated voltage |
| Indicator | ᆞOperation indicator/Manual control indicator: green LEDᆞAlarm indicator/output indicator/unit (V, A) indicator: red LED |
| Output accuracy | ᆞNormal control: within ±10% F.S. of rated load voltageᆞConstant current feedback control: within ±3% F.S. of rated load currentᆞConstant voltage feedback control: within ±3% F.S. of rated load voltageᆞConstant power feedback control: within ±3% F.S. of rated load power |
| Setting type | By front keys, by communication |
| Function | Output limit (OUT ADJ), AUTO/MAN selection, control method selection, RESET, SOFT START, SOFT UP/DOWN, output high/low limit, input correction, input slope correction, monitoring (control input, load voltage/current/power/resistance, power supply frequenc |
| Function_Alarm | Overcurrent alarm, overvoltage alarm, fuse break alarm, SCR error alarm, heater break alarm, heatsink overheat alarm |
| Accessories | 11-pin connector, isolating barrier: 4 |
| Weight | Approx. 9.7kg(approx. 8.7kg) |
The Autonics SPR3-4150TFF Power Controller is designed for precise AC power regulation in industrial automation systems. This Autonics controller supports three-phase control, operates at a 440VAC rated load voltage, and handles a 150A rated load current. SPR3-4150TFF belongs to the SPR3 Series and is used where controlled high-current power delivery is required.
The SPR3-4150TFF Autonics Power Controller is applied in conveyors, packaging machinery, automated production lines, and heavy-duty assembly systems. Its compatibility with automatic and manual control inputs enables stable output regulation across varying load conditions. The integrated LED display provides clear operational visibility, supporting consistent monitoring and controlled operation in industrial environments.
SPR3-4150TFF from Autonics provides defined electrical ratings, controlled power consumption, and standardized control interfaces suitable for industrial use. As part of the SPR3 Series, it supports dependable three-phase power control with stable performance. With specified operating parameters and established brand reliability, the SPR3-4150TFF Autonics Power Controller remains suitable for continuous industrial automation applications.




