USED MITSUBISHI FR-A520-3.7K

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.
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.