AutomationDirect DURApulse GS4-4125

The GS4-4125 is an open-frame AC variable frequency drive in the AutomationDirect DURApulse GS4 series. It takes a 460 VAC three-phase input and is rated 125 hp with three-phase input, driving three-phase induction motors in either sensorless vector control (SVC) or V/Hz mode. It provides an RS-485 (RJ12) port, analog and discrete I/O, and requires an external dynamic braking unit.

Source checked7/7 values · 2026-10-26

AutomationDirect VFD

Specification

2 sources

Category	vfd
Supply voltage	460 VAC
Frame size	E
Operating temp min	-10 °C
Operating temp max	50 °C

Study notes

Open frame enclosure, panel or wall mounting, frame size E.
Enclosure rating is IP00 and IP20.
Control mode SVC or V/Hz; carrier frequency range 2-15 kHz; output frequency range 0.1-599 Hz.
Rated 460 VAC input and output, 3 input phases and 3 output phases, 125 hp with 3-phase input.
Amperage rating 171 A; variable torque amperage rating 180 A.
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; an external dynamic braking unit is required.
Discrete I/O: 8 sinking/sourcing inputs at 24 VDC, 4 outputs (240 VAC and 48 VDC, relay/sinking/sourcing) with 2 Form C (SPDT) relays.
Analog I/O: 3 current/voltage inputs (11-bit, 0-20 mA and 4-20 mA, +/-10 VDC) and 2 current/voltage outputs (10-bit, 0-20 mA and 4-20 mA, 0-10 VDC).
Programming language is ladder; connectors are screw terminals; no integrated EMI filter and not internally bypassed.
Item shipping weight is 160 lb; country of origin Taiwan.

Safety

Safe Torque Off (STO) is built in.
UL Listed file # E198015; UL Recognized and UL Hazardous file numbers listed as none; CE and RoHS compliant.
Operating temperature rating -10 to +50 deg C.
A user-supplied external fuse is required.