Product Description
The Mitsubishi FR-A520-3.7K is a transistorized inverter (Variable Frequency Drive) from the FREQROL FR-A500 series, designed for precise speed and torque control of 3-phase induction motors up to 3.7 kW (5 HP). It operates on a 200V class, 3-phase 200–240V AC input and delivers advanced magnetic flux vector (sensorless vector) control with built-in RS-485 communication via the PU connector. This unit is the Japanese-market specification variant and has been discontinued by the manufacturer, with the FR-A800 series serving as its modern replacement.
Technical Specifications
| Specification | Value |
|---|---|
| Brand | Mitsubishi |
| Model / Part Number | FR-A520-3.7K |
| Series | FREQROL FR-A500 |
| Voltage Class | 200V Class |
| Input Voltage | 3-Phase 200–240V AC, 50/60 Hz |
| Output Voltage | 3-Phase 0–240V AC (max does not exceed supply voltage) |
| Rated Power | 3.7 kW (5 HP) |
| Rated Output Current | 17.5 A |
| Phase | 3-Phase Input / 3-Phase Output |
| Output Frequency Range | 0.2–400 Hz |
| Overload Capacity | 150% for 60 seconds (inverse-time characteristics) |
| Control Method | Sensorless (Advanced Magnetic Flux) Vector Control; V/f Control |
| Modulation Method | Sine-wave PWM; Soft-PWM |
| Communication | RS-485 (EIA Standard, Multi-drop link, max 19200 bps) |
| Operator Panel | FR-DU04 (Digital Operator) |
| Enclosure Type | IP20 (Open Type) |
| Cooling System | Forced Air Cooling |
| Dimensions (W × H × D) | 150 × 260 × 140 mm (5.90 × 10.20 × 5.50 in) |
| Approximate Weight | 3.5 kg (~7.7 lbs) |
| Analog Output | 0–10V DC, 1 mA max (AM terminal) |
| Pulse Output | FM terminal, 1440 pulses/s at 60 Hz |
| 24V DC Supply Output | 24V DC, 0.1 A (PC terminal) |
| Output Terminal Screw Size | M4 |
| Braking Resistor | Built-in (inboard brake resistor, PR/PX terminals) |
| Applicable Motor | 3-Phase Induction Motor (e.g. Mitsubishi SF-JR 4P 3.7kW) |
| Specifications Version | Japanese Specification (no suffix) |
| Lifecycle Status | Discontinued; replaced by FR-A800 series |
We warranty all items for 30 days from date of purchase.
Other Details
We warranty all items for 30 days from date of purchase. If you experience any issues with your item within this period, please contact us and we will work with you to resolve the problem. This warranty covers defects in functionality but does not cover damage caused by misuse, improper installation, or normal wear and tear.Product Videos
Custom Field
Shelf E-20
Model FR-A520-3.7K
MPN FR-A520-3.7K
Type VFD
GTIN 679523686185
Current Rating 17.5 A
Dimensions 150 x 260 x 140 mm (W x H x D)
Replaces Replaced by FR-A800 series
Cycles Discontinued
Manufacturer Mitsubishi
Output Hz 0.2-400 Hz
Empty Weight 3.5 kg
Version Japanese Specification (no suffix)
Phase 3-Phase
Enclosure Type IP20
Part Number FR-A520-3.7K
Capacity 150% for 60 seconds
Series FREQROL FR-A500
Output Voltage 3-Phase 0-240V AC
Input Voltage 200-240V AC 3-Phase 50/60Hz
Horsepower 5 HP
