Delta Electronics MS300 Series Variable Frequency Drives
The MS300 series by Delta Electronics is a line of compact variable frequency drives for industrial and commercial applications, covering 1.5 to 22 kW. The lineup includes single-phase 220 V and three-phase 380 V input variants, making it possible to match the drive to the available supply without additional transformers.
All models feature IP20 protection, a built-in braking module (up to 22 kW), ModBus RTU over RS-485, a built-in PLC supporting IEC 61131-3 programming languages, and an extended set of analogue and digital I/O. Output frequency reaches 600 Hz, enabling spindle and high-speed motor applications.
How to Choose a Delta MS300 Model — Lineup Overview
The MS300 lineup has 11 active SKUs. The primary selection criteria are motor power, supply voltage, and required input current.
Three-phase 3×380 V supply (MS43 sub-series)
- VFD4A2MS43AFSAA — 1.5 kW, input 4.2 A — from 15 943 UAH
- VFD5A5MS43AFSAA — 2.2 kW, input 5.5 A — from 16 959 UAH
- VFD9A0MS43AFSAA — 4.0 kW, input 9.0 A — from 20 247 UAH
- VFD13AMS43AFSAA — 5.5 kW, input 13 A — from 24 449 UAH
- VFD17AMS43AFSAA — 7.5 kW, input 17 A — from 28 200 UAH
- VFD25AMS43AFSAA — 11 kW, input 25 A — from 33 991 UAH
- VFD32AMS43AFSAA — 15 kW, input 32 A — from 44 346 UAH
- VFD38AMS43AFSAA — 18.5 kW, input 38 A — from 51 828 UAH
- VFD45AMS43AFSAA — 22 kW, input 45 A — from 57 046 UAH
Single-phase 1×220 V supply (MS21 sub-series)
- VFD7A5MS21AFSAA — 1.5 kW, input 7.5 A — from 13 801 UAH
- VFD11AMS21AFSAA — 3.0 kW, input 11 A — from 15 228 UAH
If only a single-phase 220 V supply is available and a three-phase motor must be driven, the MS21 models handle this without additional equipment. For ratings above 3 kW on a single-phase supply, consider the VFD-E or VFD-EL series.
MS300 Series Technical Specifications
- Power range: 1.5–22 kW
- Supply voltage: 1×220 V or 3×380 V
- Output frequency: 0.1–600 Hz
- Enclosure rating: IP20
- Built-in braking module: included in all models
- Built-in PLC: IEC 61131-3 (SFC, LD, IL, FBD, ST)
- Communication: ModBus RTU over RS-485
- Analogue inputs: 2×AI (0–10 V / 0–20 mA / 4–20 mA)
- Digital inputs: 6×DI; outputs: 2×DO + 1×RO
- Control modes: V/f law, sensorless vector (SVC)
Typical Applications for Delta MS300
- HVAC and pumps — smooth start and customisable V/f curves reduce water hammer and extend pipeline service life. See drives for pumps.
- Conveyors and hoists — SVC mode delivers stable torque at low speeds without an encoder.
- CNC machines and spindles — output frequency up to 600 Hz allows spindle speeds of 12 000–18 000 RPM.
- Packaging and food processing — compact footprint and built-in PLC simplify integration without an external controller.
Accessories and Related Equipment
For a complete MS300 installation: Delta KPC-CC01 remote keypad, braking resistors sized to the model, EMC filters, and input line reactors. Full accessory catalogue: VFD options and accessories.
See also: all Delta Electronics VFDs, full VFD catalogue.
