The Mitsubishi Electric FR-D720-3.7K is an inverter from the FREQROL FR-D700 series.

Rated Power: 3.7 kW (which is approximately equivalent to 5 horsepower).
Input Voltage: 3-phase, 200-240V.
Rated Current: 16.5A.
Frequency (Output): Ranges from 0.2 Hz to 400 Hz.
Control Method: It supports V/F control, SOFT-PWM/high-frequency PWM, and magnetic flux vector control for motor operation.
Motor Type: Designed for induction motors.
Integrated Features:
- Safe Torque Off (STO): Yes.
- Digital Inputs: 5.
- Digital Outputs (Transistor): 1.
- Digital Outputs (Relay): 1.
- Analog Inputs: 2.
- Analog Outputs: 1.
- Display: Built-in 4-digit LED.
- Protection Class: IP20 (suitable for indoor use).
- Dimensions & Weight:
  - Width: 170 mm.
  - Height: 128 mm.
  - Depth: 142.5 mm.
  - Weight: 1.8 kg.
Conformity: CE compliant, UL/cUL compliant, EAC compliant, and UKCA compliant.

Biến tần FR-D720-3.7K Mitsubishi Inverter