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AutomationDirect GS4-4050

The GS4-4050 is a DURApulse GS4 series AC variable frequency drive for 3-phase induction motors. It operates at 460 VAC nominal with 3-phase input, a 50 hp rating, and SVC or V/Hz control. It has a NEMA 1 enclosure, RS-485 communications, and built-in Safe Torque Off (STO).

Source checked11/11 values · 2026-10-26AutomationDirectVFD
Rated power
37.285kW
Rated current
69A
IP rating
IP20

Specification

2 sources
Categoryvfd
Supply voltage460 VAC
Frame sizeD0
Output typePWM output
Operating temp min-10 °C
Operating temp max50 °C

Quick answers

What is the IP rating of the AutomationDirect GS4-4050?
IP20, per DURApulse AC High-performance Drive: 460 VAC, 50hp with 3-phase input, (VFD) (PN# GS4-4050) | AutomationDirect (automationdirect.com).

Study notes

  • Controller type is high-performance; series GS4; control mode is SVC or V/Hz.
  • Nominal input and output voltage is 460 VAC; input and output phases are 3.
  • Amperage rating is 69 A, with a 73 A variable torque rating; horsepower is 50 hp with 3-phase input.
  • RS-485 (RJ12) port supports Modbus RTU, Modbus ASCII and BACnet at up to 115.2 kbaud.
  • Optional EtherNet/IP and Modbus TCP cards are available.
  • Eight discrete inputs are 24 VDC sinking/sourcing; four discrete outputs are relay/sinking/sourcing.
  • Analog input resolution is 11-bit and analog output resolution is 10-bit; input signal ranges include 0–20 mA, 4–20 mA and ±10 VDC.
  • Output frequency range is 0.1–599 Hz; carrier frequency range is 2–15 kHz.
  • Programming language is ladder; connectors are screw terminals; reverse capability is built-in.
  • External dynamic braking unit required; integrated EMI filter is not included; internally bypassed is no.
  • For use with 3-phase induction motors.

Safety

  • Built-in Safe Torque Off (STO).
  • A user-supplied external fuse is required.
  • UL Listed File # E198015.
  • CE marked; RoHS compliant.
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