Delta VFD4A8MS21MFSAA Variable Frequency Drive
Delta VFD4A8MS21MFSAA Variable Frequency Drive is a Delta 230V 3-phase 4.8A Output Current VFD designed for controlled motor operation in industrial automation systems. It supports 0.75 kW and 1 HP applications with a stable 230V single-phase AC input range of 200V~240V at 50/60 Hz. This model delivers 4.8 A heavy duty output current and 5 A normal duty output current, ensuring smooth and stable motor performance in light industrial applications. Its natural air cooling structure supports efficient heat dissipation, while the IP66 enclosure provides strong protection in harsh industrial environments. Manufactured by Delta automation, it belongs to the industrial VFD range and the MS300 inverter series.
| Brand | Delta |
| Product Type | VFD |
| Model Number | VFD4A8MS21MFSAA |
Delta VFD4A8MS21MFSAA Variable Frequency Drive - Technical Specifications
| Specification | Value |
|---|---|
| Input Voltage / Frequency | 230V, Single-phase AC 200 V ~240 V (-15% ~ +10%), 50 / 60 Hz |
| Applicable Motor Output ( kW) | 0.75 kW |
| Applicable Motor Output (HP) | 1 HP |
| Heavy Duty Rated Output Current (A) | 4.8 A |
| Normal Duty Rated Output Current (A) | 5 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 VFD4A8MS21MFSAA is commonly used in compact industrial automation systems such as small pumps, fans, conveyors, and auxiliary machinery requiring precise low-power motor control. Its IP66-rated enclosure ensures reliable operation in dusty and moisture-prone environments.
This Delta 230V 3-phase 4.8A Output Current VFD uses a natural air cooling system to maintain stable performance with minimal maintenance. It delivers smooth acceleration, stable torque control, and energy-efficient operation in light-duty applications.
For industries searching for a reliable Delta 230V 3-phase 4.8A Output Current VFD, the Delta VFD4A8MS21MFSAA offers dependable performance, durability, and efficient motor control. Within Delta industrial drive solutions, this model is ideal for compact systems requiring stable speed regulation.

