Delta VFD4A8MS21ANSAA 0.75kW 1HP Single Phase to Three Phase VFD

Overview

The Delta VFD4A8MS21ANSAA is a 0.75 kW (1 HP) reliable variable frequency drive (VFD) from Delta’s VFD-MS300 Series family. It converts single-phase 230 V input into a controlled three-phase output, rated at 4.8 A, to drive motors up to 0.75 kW / 1 HP. This single-to-three-phase capability makes it especially useful in Indian workshops, OEM panels and small machinery where only a single-phase supply is available but a standard three-phase induction motor still needs smooth, controllable speed. With V/f and Sensorless Vector Control (SVC), supporting both induction (IM) and permanent-magnet (PM) motors and an output range of 0–599 Hz, the VFD4A8MS21ANSAA gives precise, stepless speed control for variable-torque and constant-torque loads alike. Its compact, side-by-side-mountable body, removable keypad and safety functions suit modern automated machinery and tidy panel builds.

Key Features

• Input: 1-Phase 200–240 V AC, 50/60 Hz
• Output: 3-Phase 0–240 V AC, 0.75 kW / 1 HP, rated 4.8 A
• Output frequency 0–599 Hz
• Overload capacity 150% / 60 s and 200% / 3 s
• Built-in Safe Torque Off (STO), SIL2 / PLd
• Built-in Safe Torque Off (STO) for functional safety
• Supports induction (IM) and permanent-magnet (PM) motors
• Built-in brake chopper, simple PLC and USB port
• Removable LED keypad and wide fieldbus card options
• Communication: RS-485 Modbus RTU (built-in) + USB; optional CANopen, PROFIBUS, EtherCAT, EtherNet/IP
• Enclosure: IP20 (IP40 optional)

Technical Benefits

The 4.8 A rating with 150% / 60 s and 200% / 3 s gives the breakaway headroom that belt, pump and small-machine loads need at start-up without nuisance tripping. Running fans and pumps at variable speed instead of a fixed 50 Hz cuts energy use sharply—on these loads, power scales with roughly the cube of speed—while soft start and stop reduce mechanical and belt wear and eliminate direct-on-line inrush current. Built-in Safe Torque Off simplifies machine-safety compliance, the built-in brake chopper and PLC reduce external hardware, and IM/PM motor support plus rich fieldbus options make it easy to integrate into automated lines.

Selection & Compatibility

The VFD4A8MS21ANSAA pairs with standard three-phase 230 V induction motors up to 0.75 kW / 1 HP. As a sizing rule, match the drive to the motor’s full-load current rather than its kW alone: confirm the motor draws no more than 4.8 A, and for heavy constant-torque or high-inertia loads consider the next frame up for extra overload margin. Make sure a single-phase 230 V supply is available at the machine. For long motor cables or EMC-sensitive installations, add the recommended output reactor or a zero-phase core. Our engineers can confirm drive sizing, braking-resistor requirements and key parameter settings before you place the order.

Applications

Thanks to its single-phase input, it is a popular choice where three-phase mains is not available:

• ventilation fans and blowers
• packaging and labelling machines
• small lathes and drilling machines
• centrifugal and monoblock pumps
• mixers and agitators
• textile and spinning machines
• wood-working machines

About the Delta MS300 Series

The Delta VFD-MS300 is Delta’s standard compact vector-control drive, with a drive size reduced by up to 40%. It supports both induction and permanent-magnet motors and provides a built-in Safe Torque Off (STO) safety function, a built-in brake chopper, a simple built-in PLC, a USB port and a removable LED keypad, plus a wide choice of fieldbus communication cards for system integration.