# AutomationDirect GS23-4025

Hardware · `GS23-4025` · verification: source checked

The GS23-4025 is an enclosed DURApulse GS20 series general-purpose AC variable frequency drive. It takes a 460 VAC three-phase input rated 25 hp and drives three-phase induction or permanent magnet AC motors using SVC, V/Hz, FOC or torque control modes. It provides an RS-485 port with Modbus RTU/ASCII slave support, a USB B port, analog and discrete I/O, and integrated dynamic braking.

## Specification

| Property | Value |
|---|---|
| Category | vfd |
| Weight | 7.53 kg |
| Supply voltage | 460 VAC |
| Frame size | F |
| IP rating | IP20 |
| Operating temp min | -20 °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

- Safe Torque Off (STO) is built in.
- Enclosure IP rating is IP20, so the drive must be installed in a suitable enclosure environment.
- Operating temperature rating is -20 to +50 deg C.
- UL Listed, file # E198015; UL Recognized and UL Hazardous: none. CSA file: none.
- RoHS status: Yes (see CE doc); CE declarations available; EU REACH document available.

## Study notes

- Rated 25 hp with 3-phase input; 38 A rated current, 41.5 A in variable torque duty.
- Control modes: SVC (sensorless vector control), V/Hz, FOC or torque mode.
- Output frequency range 0.1–599 Hz; carrier frequency range 2–15 kHz.
- Communication: (1) RS-485 (RJ45) and (1) USB B, speeds up to 115.2k baud, Modbus RTU Slave and Modbus ASCII Slave.
- I/O: 2 analog inputs (0–20 mA / 4–20 mA, +/-10 VDC, 10-bit and 12-bit resolution), 1 analog output (0–20 mA / 4–20 mA, 0–10 VDC, 10-bit), 7 discrete inputs at 24 VDC sinking/sourcing, 3 discrete outputs (240 VAC and 48 VDC, relay/sinking/sourcing) including (1) Form C (SPDT) relay.
- Load current 3 A per point for the relay output and 50 mA per point for discrete outputs; a user-supplied external fuse is required.
- Integrated dynamic braking; the drive is not internally bypassed and has no integrated EMI filter.
- Programmed in ladder; spring clamp terminals; keypad GS20A-KPD supplied attached to the drive.
- Optional EtherNet/IP and Modbus TCP card available (communication card, not native to the drive).
- Mounting is panel or wall; frame size F; item shipping weight 16.6 lb.
- Brand DURApulse, series GS20, controller type general purpose.

## Sources

1. [DURApulse AC General Purpose Drive: 460 VAC, 25hp with 3-phase input, (VFD) (PN# GS23-4025) | AutomationDirect](https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/general_purpose_vfds/gs23-4025) (accessed 2026-10-26)
2. [GS23 4025 cutsheet](https://cdn.automationdirect.com/static/specs/cutsheet/GS23-4025_cutsheet.pdf) (accessed 2026-10-26)

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