Delta VFD4A2MS43MFSAA Variable Frequency Drive
Delta VFD4A2MS43MFSAA Variable Frequency Drive is a Delta 460V 3-phase 4.2A VFD designed for controlled motor operation in industrial automation systems. It supports 1.5 kW and 2 HP applications with a stable 460V three-phase AC input range of 380V~480V at 50/60 Hz. The drive delivers 4.2 A heavy duty output current and 4.6 A normal duty output current, ensuring stable torque control and consistent motor speed regulation in industrial environments. Its natural air cooling design provides efficient thermal management, while the IP66 enclosure ensures strong protection against dust and moisture in harsh operating conditions. Manufactured by Delta automation, it belongs to the Delta Variable Frequency Drive range and the MS300 series inverter platform.
| Brand | Delta |
| Product Type | VFD |
| Model Number | VFD4A2MS43MFSAA |
Delta VFD4A2MS43MFSAA Variable Frequency Drive - Technical Specifications
| Specification | Value |
|---|---|
| Input Voltage / Frequency | 460V, Three-phase AC 380 V ~480 V, 50 / 60 Hz |
| Applicable Motor Output ( kW) | 1.5 kW |
| Applicable Motor Output (HP) | 2 HP |
| Heavy Duty Rated Output Current (A) | 4.2 A |
| Normal Duty Rated Output Current (A) | 4.6 A |
| Cooling Method | Natural air cooling |
| IP Level | IP66 / NEMA 4X |
| EMC Filter | Built-in EMC Filter |
| Safe Torque Off (STO) | Integrated STO |
| Model Type | Standard Model |
| Braking Chopper | Built-in Braking Chopper |
| Output Frequency | 0.00 ~ 599.00 Hz (±0.1%) |
| Control Methods | V/F, SVC, FOC Sensorless |
| Size: W × H (mm) | 72×142 |
| Size: D (mm) | 159 |
The Delta VFD4A2MS43MFSAA is widely used in industrial automation systems where reliable low-power motor control is required. It is commonly applied in small conveyors, pumps, ventilation systems, compressors, and auxiliary machinery used in production and process industries. These applications require stable torque output, smooth acceleration, and accurate speed control, which are key performance strengths of the MS300 series platform.
With its 460V three-phase input compatibility, this Delta 1.5kW drive is suitable for industrial environments where stable power supply and precise motor operation are essential. The natural air cooling design ensures efficient heat dissipation without additional cooling equipment, helping reduce system complexity and maintenance requirements in continuous operation setups.
The IP66 protection rating allows the drive to operate reliably in harsh environments where dust, humidity, and water exposure are present. This enables flexible installation close to the machine, reducing wiring length and improving overall system efficiency. The Delta MS300 architecture provides advanced motor protection features such as overload handling, stable frequency output, and smooth acceleration and deceleration control, ensuring safe operation across variable load conditions.
For industrial users seeking a dependable 2HP variable frequency drive, the Delta VFD4A2MS43MFSAA offers a strong combination of durability, environmental protection, and stable motor control performance. It is widely used in compact automation systems where long-term reliability and consistent operation are critical for productivity.

