# AutomationDirect GS4-4300

Hardware · `GS4-4300` · verification: source checked

The GS4-4300 is a DURApulse GS4 series AC variable frequency drive in an open-frame, G-frame package. It accepts a 460 VAC three-phase input and is rated at 300 hp, using SVC or V/Hz control. It provides an RS-485 port for Modbus RTU, Modbus ASCII, and BACnet communication and drives three-phase induction motors.

## Specification

| Property | Value |
|---|---|
| Category | vfd |
| Supply voltage | 460 VAC |
| Rated current | 437 A |
| Frame size | G |
| Output type | PWM output |
| Operating temp min | -10 °C |
| Operating temp max | 50 °C |

## Connected

- Manufacturer: [AutomationDirect](https://machineschema.com/manufacturer/automationdirect.md)
- Protocols: [MODBUS ASCII](https://machineschema.com/protocol/modbus-ascii.md), [MODBUS RTU](https://machineschema.com/protocol/modbus-rtu.md)

## Safety

- Built-in Safe Torque Off (STO).
- UL Listed File # E198015; CE declarations available; RoHS status: Yes.
- Operating temperature range: -10 to +50 °C.

## Study notes

- Control modes: SVC or V/Hz.
- Rated input current: 437 A; variable torque rating: 460 A.
- Output frequency range: 0.1–599 Hz; carrier frequency range: 2–15 kHz.
- RS-485 port uses an RJ12 connection and supports up to 115.2k baud.
- Port protocols: Modbus RTU, Modbus ASCII, and BACnet.
- Optional EtherNet/IP and Modbus TCP cards are available; these are not listed as built-in.
- Integrated EMI filter: No.
- External dynamic braking unit is required.
- I/O: 3 analog inputs, 2 analog outputs, 8 discrete inputs, 4 discrete outputs; 2 Form C (SPDT) relays.
- Programming language: ladder.
- For use with 3-phase induction motors.
- IP rating is stated as IP00 and IP20; enclosure is open frame and wall mounted.

## Sources

1. [DURApulse AC High-performance Drive: 460 VAC, 300hp with 3-phase input, (VFD) (PN# GS4-4300) | AutomationDirect](https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/high-performance_vfds/gs4-4300) (accessed 2026-10-26)
2. [GS4 4300 cutsheet](https://cdn.automationdirect.com/static/specs/cutsheet/GS4-4300_cutsheet.pdf) (accessed 2026-10-26)

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