AutomationDirect GS33-4020

The GS33-4020 is an enclosed DURApulse GS30 series AC variable frequency drive for 460 VAC three-phase input, rated 20 hp. It controls three-phase induction and permanent magnet AC motors with SVC, V/Hz, FOC, encoder, or torque modes. It provides RS-485 Modbus RTU/ASCII communication, integrated dynamic braking, and built-in Safe Torque Off (STO).

Source checked12/12 values · 2026-10-26AutomationDirectVFD
Rated power
14.914kW
Rated current
32A
IP rating
IP20
Weight
5.1619kg

Specification

2 sources
Categoryvfd
Supply voltage460 VAC
Frame sizeE
Output typePWM output
Operating temp min-20 °C
Operating temp max50 °C

Quick answers

How much does the AutomationDirect GS33-4020 weigh?
5.1618811706 kg, per DURApulse AC High-performance Drive: 460 VAC, 20hp with 3-phase input, (VFD) (PN# GS33-4020) | AutomationDirect (automationdirect.com).
What is the IP rating of the AutomationDirect GS33-4020?
IP20, per DURApulse AC High-performance Drive: 460 VAC, 20hp with 3-phase input, (VFD) (PN# GS33-4020) | AutomationDirect (automationdirect.com).

Study notes

  • Control modes: SVC, V/Hz, FOC, encoder, or torque.
  • Integrated dynamic braking is built in.
  • Communication ports: one RS-485 (RJ45) and one USB B.
  • Modbus RTU and Modbus ASCII slave protocols, up to 115.2k baud.
  • Carrier frequency range: 2–15 kHz; output frequency range: 0.1–599 Hz.
  • Analog I/O: 2 input channels (12-bit, current/voltage) and 1 output channel (10-bit, current/voltage).
  • Discrete I/O: 7 sinking/sourcing inputs at 24 VDC and 3 relay/sinking/sourcing outputs rated 240 VAC and 30 VDC.
  • Variable torque amperage rating is 36 A.
  • Designed for 3-phase induction and permanent magnet AC motors.
  • Programming language: ladder.
  • Optional communication, encoder, and I/O modules are available.
  • Input signals: 4–20 mA, voltage, potentiometer, or pulse train.

Safety

  • Built-in Safe Torque Off (STO) function is stated.
  • Enclosure rating is IP20; the drive is for panel or wall mounting.
  • Operating temperature range is -20 to +50 °C.
  • A user-supplied external fuse is required.
  • Agency approvals stated: UL Listed File E198015, CE, and RoHS. No UL Recognized, UL Hazardous, or CSA file is stated.
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