# AutomationDirect GS33-4040

Hardware · `GS33-4040` · verification: source checked

The GS33-4040 is a DURApulse GS30 series enclosed AC variable frequency drive sold by AutomationDirect. It takes a 460 VAC three-phase input and drives three-phase induction or permanent magnet AC motors at up to 40 hp. Control modes are SVC, V/Hz, FOC, encoder or torque, and it has an RS-485 port carrying Modbus RTU or Modbus ASCII slave.

## Specification

| Property | Value |
|---|---|
| Category | vfd |
| Supply voltage | 460 VAC |
| Frame size | G |
| Output type | PWM output |
| 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 type is enclosed with IP20 rating; mounting is panel or wall.
- Operating temperature rating -20 to +50 deg C.
- A user-supplied external fuse is required.
- Agency approvals: UL Listed File # E198015, CE declaration, RoHS status Yes; no UL Recognized or UL Hazardous file, no CSA file.

## Study notes

- Control modes: SVC, V/Hz, FOC, encoder or torque.
- Horsepower rating is 40 hp with 3-phase input; amperage rating 60 A, variable torque rating 69 A.
- Communication ports: (1) RS-485 (RJ45) and (1) USB B, port speed up to 115.2k baud.
- I/O: 7 discrete inputs at 24 VDC (sinking/sourcing), 3 discrete outputs (relay/sinking/sourcing) rated 240 VAC and 30 VDC, one Form C (SPDT) relay.
- Analog I/O: 2 input channels (12-bit, 0-20 mA / 4-20 mA or +/-10 VDC) and 1 output channel (10-bit, 0-20 mA / 4-20 mA or 0-10 VDC).
- Carrier frequency range 2-15 kHz; output frequency range 0.1-599 Hz.
- Integrated dynamic braking; not internally bypassed; no integrated EMI filter.
- Input signal options: 4-20 mA, voltage, potentiometer or pulse train input; output is PWM.
- Programming language: ladder (GSLogic drive PLC software, GSOFT2 configuration software).
- Connector type: spring clamp terminals.
- Item shipping weight 29.23 lb; country of origin India; keypad GS30A-KPD supplied attached to the drive.
- Optional communication, encoder and I/O modules are available.

## Sources

1. [DURApulse AC High-performance Drive: 460 VAC, 40hp with 3-phase input, (VFD) (PN# GS33-4040) | AutomationDirect](https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/high-performance_vfds/gs33-4040) (accessed 2026-10-26)
2. [GS33 4040 cutsheet](https://cdn.automationdirect.com/static/specs/cutsheet/GS33-4040_cutsheet.pdf) (accessed 2026-10-26)

---

Source page: https://machineschema.com/hardware/automationdirect-gs33-4040  
JSON: https://machineschema.com/hardware/automationdirect-gs33-4040.json  
License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Cite Machine Schema and the original sources.