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Autonics SPR3-435NFF Thyristor Power Controller
Autonics SPR3-435NFF Thyristor Power Controller supports 35A load current with 440VAC operation and 3-phase controlled switching capability. It includes a 3-digit LED display, features digital inputs for RUN/STOP, AUTO/MANU and RESET, and uses natural cooling. Output ranges cover 0β98% phase control and up to 100% cycle and ON/OFF control, powered by a 100β240VAC supply. The model is part of the Autonics portfolio and listed under Autonics Thyristor Power Controllers within the SPR3 Series.
| Brand | Autonics |
| Product Type | Power Controller |
| Model Number | SPR3-435NFF |
Autonics SPR3-435NFF Thyristor Power Controller β Technical Specifications
| Specification | Value |
|---|---|
| Control phase | 3-phase |
| Rated load voltage | 440VAC~ |
| Rated load current | 35A |
| Display method | 3-digit 7-segment LED |
| Control input | αAuto control: DC4-20mA, 1-5VDC @(=), ON/OFF contact (no-voltage input), pulse voltage (5-12VDC @(=)) αManual control: outside adjuster (10kΞ©), inside adjuster (output limit) |
| Digital inputs | RUN/STOP switching, AUTO/MANU switching, RESET |
| Output_Alarm | 250VAC~ 3A, 30VDC @(=) 3A, 1c resistive load |
| Cooling method | Natural cooling |
| Control method | αPhase control: normal control mode, constant current/constant voltage/constant power feedback control modeαCycle control: fixed cycle control modeαON/OFF control |
| Applied load | αPhase control, ON/OFF control: resistance load, inductive loadαCycle 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. 14VA |
| Insulation resistance | Over 200MΞ© (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 | Β±2kV the square wave noise (pulse width: 1γ²) by the noise simulator |
| Memory Protection | β 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 55β, storage: -20 to 80β |
| Environment_Ambient humidity | 35 to 85% RH, storage: 35 to 85% RH |
| Allowable voltage range | 90 to 110% of rated voltage |
| Indicator | αOperation indicator/Manual control indicator: green LEDαAlarm indicator/output indicator/unit (V, A) indicator: red LED |
| Output accuracy | αNormal control: within Β±10% F.S. of rated load voltageαConstant current feedback control: within Β±3% F.S. of rated load currentαConstant voltage feedback control: within Β±3% F.S. of rated load voltageαConstant power feedback control: within Β±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. 4.9kg(approx. 4.1kg) |
The Autonics SPR3-435NFF Thyristor Power Controller provides 35A capacity, 440VAC operation, a 3-digit LED display and functional digital inputs for mode switching. As part of the SPR3 Series, it is utilized in industrial automation environments where stable 3-phase power regulation and controlled output behaviour are essential.
This controller is applied in conveyors, packaging machines, automated assembly stations and heating or process equipment requiring predictable and stable output control. Natural cooling supports dependable operation, while its flexible output modes help maintain consistent system response under varying industrial load conditions.
The Autonics SPR3-435NFF Thyristor Power Controller ensures reliable performance supported by its 35A load handling, voltage compatibility and clear input-driven operational control. Autonics provides dependable solutions for industrial users requiring structured power switching within automation systems. As a SPR3 Series model, it supports consistent and steady operation across continuous-duty applications.
