# AutomationDirect DURApulse GS33-2040

Hardware · `GS33-2040` · verification: source checked

The GS33-2040 is a DURApulse GS30 series enclosed AC variable frequency drive rated 40 hp with three-phase 230 VAC input and output. It controls three-phase induction and permanent magnet AC motors using SVC, V/Hz, FOC, encoder or torque control modes. It has an RS-485 (RJ45) port and a USB B port, with Modbus RTU or Modbus ASCII slave communication, and requires an external dynamic braking unit.

## Specification

| Property | Value |
|---|---|
| Category | vfd |
| Weight | 38.1018 kg |
| Supply voltage | 230 VAC |
| Rated power | 29.828 kW |
| Rated current | 120 A |
| Frame size | I |
| 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.
- An external dynamic braking unit is required.
- Fuse type: user-supplied external fuse.
- Temperature rating -20 to +50 deg C.
- Enclosure type enclosed, IP20; mounting panel or wall.
- UL Listed File # E198015; CE declaration available; RoHS status yes.

## Study notes

- Series: GS30; controller type: high-performance; frame size I.
- Input and output voltage 230 VAC, three input phases and three output phases.
- Amperage rating 120 A; variable torque amperage rating 134 A.
- Control modes: SVC, V/Hz, FOC, encoder or torque.
- Carrier frequency range 2-15 kHz; output frequency range 0.1-599 Hz.
- Communication: (1) RS-485 (RJ45) and (1) USB B; port speed up to 115.2k baud; Modbus RTU Slave and Modbus ASCII Slave.
- Discrete I/O: 7 sinking/sourcing inputs at 24 VDC and 3 relay/sinking/sourcing outputs rated 240 VAC and 30 VDC; one Form C (SPDT) relay; load current 3 A/point relay, 50 mA/point discrete.
- Analog I/O: 2 input channels (0-20 mA, 4-20 mA, +/-10 VDC, 12-bit) and 1 output channel (0-20 mA, 4-20 mA, 0-10 VDC, 10-bit).
- Input signal options: 4-20 mA, voltage, potentiometer or pulse train; output type PWM.
- Reverse capability built-in; integrated EMI filter: no; internally bypassed: no.
- Programming language: ladder; connector type: spring clamp terminals.
- Optional communication, encoder and I/O modules are available.

## Sources

1. [DURApulse AC High-performance Drive: 230 VAC, 40hp with 3-phase input, (VFD) (PN# GS33-2040) | AutomationDirect](https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/high-performance_vfds/gs33-2040) (accessed 2026-10-26)
2. [GS33 2040 cutsheet](https://cdn.automationdirect.com/static/specs/cutsheet/GS33-2040_cutsheet.pdf) (accessed 2026-10-26)

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