# AutomationDirect DURApulse GS4-4040

Hardware · `GS4-4040` · verification: source checked

The GS4-4040 is a DURApulse GS4 series AC variable frequency drive from AutomationDirect. It accepts 460 VAC three-phase input and is rated 40 hp, using either sensorless vector control (SVC) or V/Hz control mode. It is a NEMA 1, IP20, frame C unit for panel or wall mounting, with an RS-485 (RJ12) port, integrated dynamic braking and built-in Safe Torque Off.

## Specification

| Property | Value |
|---|---|
| Category | vfd |
| Supply voltage | 460 VAC, 3-phase |
| Frame size | C |
| 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

- Safe Torque Off (STO) is built-in.
- Requires a user-supplied external fuse.
- Operating temperature rating -10 to +50 deg C.
- NEMA 1 enclosure, IP20: protects against finger contact, not against dust or water.
- UL Listed File # E198015; CE declaration available; RoHS compliant.

## Study notes

- Rated 40 hp with 3-phase input; amperage rating 57 A, variable torque amperage rating 60 A.
- Control modes: SVC or V/Hz; output frequency range 0.1-599 Hz; carrier frequency 2-15 kHz.
- Frame size C; mounting is panel or wall; enclosure type NEMA 1.
- RS-485 (RJ12) port supports Modbus RTU, Modbus ASCII and BACnet at up to 115.2k baud.
- Optional EtherNet/IP and Modbus TCP cards are available (not built in).
- I/O: 8 discrete inputs at 24 VDC (sinking/sourcing), 4 discrete outputs rated 240 VAC and 48 VDC (relay/sinking/sourcing) with two Form C (SPDT) relays; 3 analog inputs (0-20 mA, 4-20 mA, +/-10 VDC) and 2 analog outputs (0-20 mA, 4-20 mA, 0-10 VDC).
- Input resolution 11-bit; output resolution 10-bit; load current 3 A/point relay, 50 mA/point discrete.
- Programming language: ladder (GSLOGIC drive PLC software, GSOFT2 configuration software).
- Connection type: screw terminals; intended for 3-phase induction motors.
- Shipping weight 23.8 lb; country of origin India; HS code 8504.40.

## Sources

1. [DURApulse AC High-performance Drive: 460 VAC, 40hp with 3-phase input, (VFD) (PN# GS4-4040) | AutomationDirect](https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/high-performance_vfds/gs4-4040) (accessed 2026-10-26)
2. [GS4 4040 cutsheet](https://cdn.automationdirect.com/static/specs/cutsheet/GS4-4040_cutsheet.pdf) (accessed 2026-10-26)

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