Front view of 450 kW three-phase 400V INVT GD350A inverter
Front view of 450 kW three-phase 400V INVT GD350A inverter
Right side of 450 kW three-phase 400V INVT GD350A inverter showing ventilation and connectors
Left side of 450 kW three-phase 400V INVT GD350A inverter with expansion slots
Top view of 450 kW three-phase 400V INVT GD350A inverter with heat dissipation fins
Bottom view of 450kW three-phase 400V INVT GD350A inverter showing mounting points

INVT GD350A 450 kW VFD | 400 V 3-Phase Inverter (Dual-Rating)

CHF 10,995.00 excl. VAT, free Shipping

  • Dual Power Rating: 450 kW (Normal Duty) / 400 kW (Heavy Duty) for flexible, heavy-duty operation

  • Rated Voltage: 3-Phase 400V AC industrial-grade inverter

  • High Starting Torque: Up to 0.25 Hz / 150% (Asynchronous), 0 Hz / 200% (Synchronous)

  • Precision Speed Control: ±0.2% (Sensorless Vector Control), ±0.02% (Vector Control)

  • Robust Overload Capacity: Supports up to 150% current for 60s, 180% for 10s, and 200% for 1s

  • Advanced Safety: Integrated Safe Torque Off (STO) for operator protection

  • Multiple Braking Modes: Dynamic, DC, magnetic, and short-circuit braking

  • Smart Connectivity: Built-in Modbus RTU, optional CANopen, Profibus DP, Profinet, Bluetooth & WiFi

  • User-Friendly Interface: Multi-language LCD panel with programmable PLC and easy parameter setup

  • Expandable Architecture: Three expansion slots for I/O, communication, and feedback modules

  • Uninterrupted Operation: Maintains motor control during short power interruptions using stored energy

  • Ideal for: Heavy pumps, HVAC systems, conveyors, machine tools, renewable energy, and more

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SKU: GD350A-400G/450P-4 Category: Tag:

Description

The INVT GD350A 450 kW is a high-performance industrial inverter engineered for precise motor control and heavy-duty applications. With dual ratings — 450 kW (Normal Duty) and 400 kW (Heavy Duty) — it provides maximum flexibility, reliability, and efficiency for pumps, fans, conveyors, and other industrial motors.

Ideal for industries such as HVAC, water treatment, manufacturing, and packaging, the GD350A 450 kW is designed for demanding environments where performance and safety are critical.

Key Specifications – INVT GD350A 450 kW (400 V 3-Phase, Dual Rating)

Power & Voltage

  • Power Rating: 450 kW (Normal Duty), 400 kW (Heavy Duty)

  • Rated Voltage: 3-Phase 400 V AC

  • Supported Motors: Asynchronous & Synchronous

Control Modes

  • Vector Control (VC)

  • Sensorless Vector Control (SVC)

  • Advanced I/F Control

  • Constant Current Control

Motor Performance & Precision

  • High Starting Torque: Asynchronous Motor 0.25 Hz / 150%; Synchronous Motor 0 Hz / 200%

  • Speed Accuracy: ±0.2% (SVC), ±0.02% (VC)

  • Torque Accuracy: ±10% (SVC), ±5% (VC)

  • Auto Motor Tuning: Automatically optimizes motor parameters for low-speed torque, precise speed, and reduced skin effect.

Safety & Stability

  • Safe Torque Off (STO): Hardware safety function meeting international standards

  • Overload Capacity: 150% for 60 s, 180% for 10 s, 200% for 1 s

  • Voltage & Current Stability: Prevents motor surges and overvoltage during deceleration

  • Uninterrupted Operation: Maintains control during short power interruptions

Braking & Noise Suppression

  • Braking Modes: Dynamic, DC, magnetic, short-circuit braking

  • Digital Noise Filtering: DSP-based suppression for high signal integrity

Connectivity & Smart Features

  • Industrial Networks: Standard Modbus RTU; optional CANopen, Profibus DP, Profinet

  • Wireless IoT Management: Optional Bluetooth/WiFi for remote control via INVT-Workshop

  • Flexible I/O: 4 digital inputs, 2 high-speed pulse inputs, 2 analog inputs, relay outputs, analog outputs

User Operation & Expandability

  • LCD Control Panel: Multi-language, intuitive setup, monitoring, troubleshooting

  • Programmable PLC: 128 kB memory for custom automation logic

  • Expansion Slots: Three slots for I/O extension, communication modules, feedback devices

  • Data Transfer & Remote Access: USB backup, firmware updates, cloud-ready via UDP/MQTT

Ideal Applications for GD350A 450 kW

  • Heavy-duty pumps & compressors

  • Large HVAC and air handling units

  • Conveyors and packaging machinery

  • Machine tools and textile manufacturing

  • Renewable energy and power generation systems

  • Water and wastewater treatment plants

Why Choose the INVT GD350A 450 kW VFD?

The GD350A 450 kW delivers precise torque control, advanced safety functions, high overload tolerance, and smart connectivity, making it ideal for demanding industrial applications such as HVAC systems, pumps, conveyors, and automation lines. With dual ratings and robust design, this inverter ensures superior motor performance while remaining flexible and reliable for OEMs and industrial professionals.

See our full range of 400 V variable frequency drives, covering all power ratings from 0.75 to 500 kW.

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Additional information

Brake Chopper

Communication Protocols

Ethernet/IP, Profinet, CAN Master/Slave, etc. (extension card is needed), Modbus RTU & ASCII
Control Methods

SVPWM, SVC (Sensorless Vector Control), VC (Vector Control with Encoder)
Dual Rating Capability

Dual Rating
EMC Filter

Input Voltage

Motor Compatibility

Asynchronous Motors, Synchronous motors
Mounting Type

Wall and Flange Mounting
Safety Features

User Interface

Multi-function LCD keypad

Specification

P (Normal Duty) Motor Rated Power 450
Rated Current 820
G (Heavy Duty) Motor Rated Power 400
Rated Current 720
Line Voltage, Frequency AC 3-ph. 380 V … 440 V (-15% … +10%), 50 Hz/60 Hz (± 5%)
Output Voltage 3-ph. 0 V … 480 V (max. input voltage)
Overload Capacity 150% for 60s in G setting (Heavy Duty), 120% for 60s in P setting (Normal Duty)
Output Frequency 0 … 590 Hz
Control Inputs  Analog: 2 inputs (AI1: 0 … 10 V / 0(4) … 20 mA; AI2: -10 … 10 V), optionally expandable
Digital: 6 programmable inputs, including 2 high-speed inputs (50 kHz) for speed setpoint or actual value via incremental or pulse encoders, optionally expandable
Control Outputs  Analog: 1 programmable output 0 … 10 V / 0(4) … 20 mA, optionally expandable
Digital: 2 programmable outputs, one of them high-speed (50 kHz), potential-free, optionally expandable
Relays: 2 programmable changeover contacts (NO/NC), optionally expandable
Interfaces RS485 (terminals) as standard, up to 3 freely configurable option interfaces for communication modules, terminal expansions, feedbacks, and PLC cards
Brake Chopper optional
EMC Filter Integrated IEC61800-3 C3; IEC61800-3 C1 & C2 optional
DC Reactor optional
Safety Functions Two-channel STO (Safe Torque Off) (IEC61800-5-2, SIL2, PL “d”)
Protection Rating IP20, optional IP55
Ambient Temperature -10°C … +50°C; power reduction required if ambient temperature exceeds +40°C, air cooling
Certification CE, TÜV
Dimensions / Weight 620 mm x 1700 mm x 580 mm / 407kg

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FAQ

Q1: What applications is the INVT GD350A 450 kW VFD best suited for?
A: The INVT GD350A 450 kW is designed for heavy industrial use, ideal for large pumps, fans, conveyors, HVAC systems, machine tools, packaging machinery, textile production, food processing, and renewable energy applications that require precise motor control, reliability, and high overload capacity.

Q2: What is the difference between Normal Duty and Heavy Duty ratings for the GD350A 450 kW?
A: Normal Duty (450 kW) supports continuous operation under standard industrial conditions, while Heavy Duty (400 kW) handles frequent starts, stops, high torque, and demanding load fluctuations, ensuring durability and reliability in tougher operating environments.

Q3: What voltage does the INVT GD350A 450 kW support?
A: This model operates at a rated three-phase 400 V AC, the standard for industrial motors and equipment. It is compatible with a wide range of industrial installations.

Q4: How does the GD350A 450 kW handle low-speed torque and motor control?
A: Using Vector Control (VC) and Sensorless Vector Control (SVC), the GD350A 450 kW delivers smooth and stable motor operation at very low speeds, achieving starting torque up to 0.25 Hz / 150 % for asynchronous motors and 0 Hz / 200 % for synchronous motors.

Q5: What safety features are integrated in the INVT GD350A 450 kW?
A: The GD350A 450 kW includes Safe Torque Off (STO) for instant motor shutdown in emergencies and multiple built-in protections such as overvoltage, overcurrent, undervoltage, phase loss, and thermal overload, ensuring safe and reliable operation.

Q6: Can the GD350A 450 kW handle power surges and overloads?
A: Yes. It supports 150 % overload for 60 seconds, 180 % for 10 seconds, and 200 % for 1 second, allowing it to manage peak loads and transient conditions without compromising performance.

Q7: What communication protocols are available for the GD350A 450 kW?
A: The INVT GD350A 450 kW includes Modbus RTU, with optional modules for CANopen, Profibus DP, and Profinet. Wireless monitoring via Bluetooth and WiFi modules is also supported, enabling integration with the INVT-Workshop app and remote control.

Q8: How easy is it to operate and configure the GD350A 450 kW?
A: This inverter features a multilingual LCD panel, a programmable PLC with 128 kB memory, a USB port for firmware updates, and three expansion slots for I/O, communication, or feedback modules, offering flexible and user-friendly operation.

Q9: Does the GD350A 450 kW maintain motor operation during power interruptions?
A: Yes. It can utilize stored energy to keep motors running during brief power outages, critical for uninterrupted industrial processes.

Q10: How does the INVT GD350A 450 kW contribute to energy efficiency?
A: By providing precise speed and torque control, advanced motor tuning, and optimized acceleration/deceleration, the GD350A 450 kW reduces energy consumption, minimizes mechanical wear, and extends the life of motor-driven systems.

Related Documents

Documentation for INVT GD350A 3-Phase 400V 450kW:

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