# AutomationDirect DURApulse GS4-4175

Hardware · `GS4-4175` · verification: source checked

The DURApulse GS4-4175 is an open-frame AC variable frequency drive in the GS4 series. It takes 460 VAC three-phase input and drives a 175 hp motor using SVC or V/Hz control, with an RS-485 port for Modbus RTU, Modbus ASCII and BACnet communication. Built-in Safe Torque Off is included, and an external dynamic braking unit is required.

## Specification

| Property | Value |
|---|---|
| Category | vfd |
| Supply voltage | 460 VAC |
| Rated power | 130.4974776 kW |
| Rated current | 247 A |
| Frame size | F |
| 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).
- External dynamic braking unit required.
- User-supplied external fuse required.
- IP rating: IP00 and IP20; enclosure type: open frame.
- Operating temperature rating: -10 to +50 °C.
- UL Listed File # E198015; CE; RoHS: Yes; EU REACH document available.

## Study notes

- Series: GS4.
- Input and output: 3 phases, 460 VAC nominal.
- Variable torque amperage rating: 260 A.
- Control mode: SVC or V/Hz.
- Carrier frequency range: 2-15 kHz; output frequency range: 0.1-599 Hz.
- Communication port: one RS-485 (RJ12) port at up to 115.2k baud; BACnet is listed but has no matching protocol id.
- Input signal: 4-20 mA, voltage or potentiometer input.
- Analog I/O: 3 analog inputs (11-bit) and 2 analog outputs (10-bit).
- Discrete I/O: 8 discrete inputs (24 VDC, sinking/sourcing) and 4 relay/sinking/sourcing outputs (240 VAC and 48 VDC; 2 Form C relays).
- Programming language: ladder; for use with 3-phase induction motors.
- Optional EtherNet/IP and Modbus TCP cards are available.
- Item shipping weight: 239 lb; mounting: panel or wall.

## Sources

1. [DURApulse AC High-performance Drive: 460 VAC, 175hp with 3-phase input, (VFD) (PN# GS4-4175) | AutomationDirect](https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/high-performance_vfds/gs4-4175) (accessed 2026-10-26)
2. [GS4 4175 cutsheet](https://cdn.automationdirect.com/static/specs/cutsheet/GS4-4175_cutsheet.pdf) (accessed 2026-10-26)

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