# AutomationDirect DURApulse GS4-25P0

Hardware · `GS4-25P0` · verification: source checked

The GS4-25P0 is a DURApulse GS4 series AC variable-frequency drive from AutomationDirect. It operates from 230 VAC and is rated for 5 hp with three-phase input or 2 hp with single-phase input, using SVC or V/Hz control. It has an IP20 NEMA 1 enclosure, built-in Safe Torque Off, RS-485 communication, and integrated dynamic braking.

## Specification

| Property | Value |
|---|---|
| Category | vfd |
| Supply voltage | 230 VAC |
| Frame size | A |
| Output type | PWM output |
| IP rating | IP20 |
| 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).
- User-supplied external fuse required.
- UL Listed File # E198015.
- CE marked; RoHS compliant; EU REACH document available.

## Study notes

- Brand: DURApulse; series: GS4; controller type listed as high-performance.
- Input phases: 3 and 1; output phases: 3.
- Horsepower by input phase: 5 hp with 3-phase input, 2 hp with 1-phase input.
- Amperage rating: 16 A with 3-phase input and 8 A with 1-phase input; variable-torque rating 17 A.
- Control mode: SVC or V/Hz.
- Communication port: one RS-485 (RJ12); port protocols include Modbus RTU, Modbus ASCII and BACnet, at up to 115.2k baud.
- Input signal: 4–20 mA, voltage or potentiometer input; output type: PWM output; reverse capability built-in.
- Analog I/O: 3 input channels (11-bit, 0–20/4–20 mA, ±10 VDC) and 2 output channels (10-bit, 0–20/4–20 mA, 0–10 VDC).
- Discrete I/O: 8 sinking/sourcing inputs at 24 VDC and 4 relay/sinking/sourcing outputs at 240 VAC/48 VDC; two Form C (SPDT) relays.
- Carrier frequency range: 2–15 kHz; output frequency range: 0.1–599 Hz.
- Programming language: ladder; connector type: screw terminals; intended for 3-phase induction motors.
- Optional EtherNet/IP and Modbus TCP cards are available; integrated EMI filter and internal bypass are not provided.

## Sources

1. [DURApulse AC High-performance Drive: 230 VAC, 5hp with 3-phase input, 2hp with 1-phase input, (VFD) (PN# GS4-25P0) | AutomationDirect](https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/high-performance_vfds/gs4-25p0) (accessed 2026-10-26)
2. [GS4 25P0 cutsheet](https://cdn.automationdirect.com/static/specs/cutsheet/GS4-25P0_cutsheet.pdf) (accessed 2026-10-26)

---

Source page: https://machineschema.com/hardware/automationdirect-gs4-25p0  
JSON: https://machineschema.com/hardware/automationdirect-gs4-25p0.json  
License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Cite Machine Schema and the original sources.