Maintenance teams planning replacements for SPRM3-F55R frequently review Autonics Proximity Sensor, Autonics Spc1 35 and Autonics Digital Counter to prevent downtime, checking availability and compatibility with existing systems.
Autonics SPRM3-F55R Thyristor Power Controller
The Autonics SPRM3-F55R Power Controller offers Single phase 3 Ch or 3-phase, 55A load current, Resistance load: 0 to 98 %, Inductive load: 5 to 98 % output range, 24VDC power supply. Manufactured by Autonics under the Autonics Power Controller category, this model belongs to the SPRM Series.
| Brand | Autonics |
| Product Type | Power Controller |
| Model Number | SPRM3-F55R |
Autonics SPRM3-F55R Thyristor Power Controller – Technical Specifications
| Specification | Value |
|---|---|
| Control phase | Single phase 3 Ch or 3-phase |
| Rated load voltage | Free voltage 220-440 VAC~ 50/60 Hz |
| Rated load current | 55A |
| Display method | 5 digit 11 segment LCD (white) × 4, Output BAR |
| Control input | ᆞAuto control: DC 4-20mA×3Ch, 0-5/1-5/0-10VDC@(=), External adjuster (10kΩ), RS485ᆞManual control: Parameter setting |
| Digital inputs | RUN/STOP switching, AUTO/MANU switching, RESET |
| Output_Alarm | 250VAC~ 2A, 30VDC @(=) 2A, 1c resistive load |
| Output_Communication | RS485 |
| Cooling method | Natural cooling |
| Control method | ᆞPhase control: Normal / Constant current feedback / Constant voltage feedback / Constant power feedback control mode |
| Applied load | Resistance load, inductive load |
| Output range | Resistance load: 0 to 98 %, Inductive load: 5 to 98 % |
| Power supply | 24VDC |
| Min. load current | 1A |
| Power consumption | ≤ 15 W |
| Insulation resistance | Over 200MΩ (at 500VDC megger) |
| Dielectric strength | Between the charging part and the case : 3,000 VAC~ 50/60 Hz for 1 min |
| Output leakage current | Max. 10mArms |
| Noise immunity | ±0.5kV the square wave noise (pulse width: 1㎲) by the noise simulator |
| Memory Protection | ≈ 10 years (non-volatile semiconductor memory type) |
| Vibration | 0.5 mm double amplitude at frequency of 5 to 55 Hz in each X, Y, Z direction for 2 hours |
| Vibration_Malfunction | 0.5 mm double amplitude at frequency of 5 to 55 Hz in each X, Y, Z direction for 10 min |
| Environment_Ambient temperature | -10 to 40℃, storage: -20 to 80℃ (no freezing or condensation) |
| Environment_Ambient humidity | 35 to 85% RH, storage: 35 to 85% RH |
| Unit weight (packaged weight) | ≈ 4.75 kg (≈ 5.75 kg) |
Autonics SPRM3-F55R Power Controller is a high-performance multi-channel power controller engineered for demanding industrial applications. With support for single-phase 3Ch or full 3-phase operation, it handles up to 55A rated current across a free voltage range of 220–440VAC. The controller features a 5-digit 11-segment LCD with output bar display, ensuring clear visibility of operating status. Inputs include DC 4–20mA, 0–5/1–5/0–10VDC, external adjuster, and RS485, giving engineers flexibility for integration into modern automation systems.
The SPRM3-F55R supports advanced control methods such as phase control with feedback for voltage, current, and power stabilization, alongside cycle control and ON/OFF switching. Its natural cooling system enhances reliability without requiring additional fans, while safety features like alarms for overvoltage, fuse break, and SCR errors protect critical equipment. With a compact 4.75 kg design, low power consumption of ≤15W, and operation across –10°C to +40°C, it is trusted for long service life in diverse industries. Memory protection up to 10 years further ensures stability for continuous use.
Applications of the Autonics SPRM3-F55R include industrial heaters, ovens, furnaces, semiconductor equipment, packaging systems, and inductive load management. Engineers rely on this SPRM Autonics Power Controller for its flexibility, wide load compatibility, and reliable communication via RS485. Whether managing resistance or inductive loads, the unit ensures efficiency and precision. Maintenance teams value its simple setup with front keys and parameter settings, making it suitable for both new installations and retrofits.
As part of the proven Autonics SPRM Power Controller range, the F55R strengthens Autonics’ reputation for durable and accurate load control technology. This model delivers the balance of safety, performance, and integration flexibility that industries demand. For more details, visit the official Autonics Power Controllers page.
