VFD037E43A 3.7kW Micro Vector AC Drive 460V 3-Phase | Delta

The Original New Delta VFD037E43A is a 3.7 kW (5 HP) micro vector AC drive from the VFD-E series, designed for reliable motor speed and torque control in industrial automation and OEM machine applications. Rated at 8.5 A continuous output current with a 380–480 V three-phase input, it delivers stable performance for pumps, fans, conveyors, and general-purpose machinery. Featuring sensorless vector control, built-in Modbus RTU communication via RS-485, and a modular design with removable keypad and fan, the VFD-E series offers flexible integration and simplified maintenance. This product has been discontinued by Delta Electronics and is available as a spare part while supplies last. The recommended replacement is the MS-VFD9A0MS43ANSAA from the MS300 series.

Core Engineering Highlights:
3.7 kW (5 HP) rated output | 8.5 A continuous output current (CT) / 10.2 A (VT) | 380–480 V 3-phase input | Sensorless vector control (SVC) + V/F control | 0–600 Hz output frequency | Built-in Modbus RTU (RS-485) | Built-in EMI filter | Modular design with removable keypad and fan | IP20 protection | -10°C to +50°C operating temperature

Key Features:

• Original New Delta VFD037E43A drive

• 3.7 kW (5 HP) rated output power with 8.5 A continuous output current

• 380–480 V AC 3-phase input, 50/60 Hz (±5%, 47–63 Hz)

• Output frequency range: 0–600 Hz

• Sensorless vector control (SVC) and V/F control with 3-point任意 V/F curve

• Built-in Modbus RTU communication protocol via RS-485 (up to 38,400 bps)

• Built-in EMI filter for reduced electromagnetic emissions

• Modular design with easily removable keypad and fan for simplified maintenance

• Supports both induction motors and permanent magnet motors

• Built-in brake chopper (optional external braking resistor)

• Zero-speed holding function for torque maintenance at standstill

• Flexible I/O expansion capability

• DIN rail or chassis mounting

• No keypad included (optional)

Applications:

• Pumps and fans in HVAC and water treatment

• Conveyors and material handling systems

• General-purpose machine control and OEM equipment

• Textile, packaging, and food processing machinery

• Pump and fan applications requiring variable torque control

Technical Specifications:

System Compatibility:

• Compatible with standard 3-phase induction motors up to 3.7 kW

• Supports permanent magnet motors (IPM/SPM) with appropriate parameter settings

• Compatible with Delta PLCs, HMIs, and motion controllers via Modbus RTU (RS-485)

• Supports optional communication modules for extended fieldbus integration

• Suitable for use with Delta braking resistors and AC reactors for harmonic suppression

• Programmed via built-in keypad (optional) or Delta VFDSoft configuration software

Related Products:

• MS-VFD9A0MS43ANSAA – Delta MS300 series 3.7 kW drive (recommended replacement)

• C-VFD037C43A-21 – Delta C2000 series 3.7 kW drive (alternative replacement)

• VFD037E23A – 3.7 kW, 230 V 3-phase version (different voltage class)

• VFD055E43A – 5.5 kW version (higher power)

• VFD022E43A – 2.2 kW version (lower power)

• Braking resistor – External braking resistor for high-inertia loads

• AC Reactor – For harmonic suppression and power quality improvement

PLC ERA is an independent industrial automation distributor supplying genuine Original New products through established global supply channels. All products are factory sealed when applicable and undergo quality inspection prior to shipment. Delta and VFD are trademarks of Delta Electronics, Inc.