Delta VFD4A8ME21ANNAA 0.75kW 1HP Single Phase to Three Phase VFD

Overview

The Delta VFD4A8ME21ANNAA is a 0.75 kW (1 HP) space-saving variable frequency drive (VFD) from Delta’s VFD-ME300 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 VFD4A8ME21ANNAA gives precise, stepless speed control for variable-torque and constant-torque loads alike. Its ultra-compact, side-by-side-mountable body and screw-less wiring suit dense modern control cabinets and fast assembly.

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
• Supports induction (IM) and permanent-magnet (PM) motors
• Built-in brake chopper and simple built-in PLC
• Screw-less terminal blocks and common DC-bus support
• Up to 60% smaller for dense side-by-side installation
• Communication: RS-485 Modbus RTU (built-in)
• Enclosure: IP20

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 brake chopper, a simple PLC and screw-less terminals cut wiring time and external parts, while support for both IM and PM motors keeps the same drive useful across machine types.

Selection & Compatibility

The VFD4A8ME21ANNAA 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:

• small lathes and drilling machines
• ventilation fans and blowers
• textile and spinning machines
• wood-working machines
• centrifugal and monoblock pumps
• short belt and roller conveyors
• packaging and labelling machines

About the Delta ME300 Series

The Delta VFD-ME300 is a compact economy vector-control drive that inherits Delta’s core drive technology in a body up to 60% smaller than older designs. It supports both induction and permanent-magnet motors and includes a built-in brake chopper, built-in Modbus communication, a simple built-in PLC, screw-less terminal blocks for fast wiring, common DC-bus capability and Deceleration Energy Backup (DEB).