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AutomationDirect GS21-10P2

The GS21-10P2 is an enclosed DURApulse GS20 series general-purpose AC variable frequency drive. It runs from a single-phase 120 VAC supply and produces three-phase 230 VAC output for a 1/4 hp motor. It supports SVC, V/Hz, FOC and torque control modes, has an RS-485 port for Modbus RTU/ASCII, integrated dynamic braking and built-in Safe Torque Off.

Source checked10/10 values · 2026-10-26AutomationDirectVFD
Rated current
1.6A
IP rating
IP20

Specification

2 sources
Categoryvfd
Supply voltage120 VAC
Frame sizeA1
Output typePWM output
Operating temp min-20 °C
Operating temp max50 °C

Quick answers

What is the IP rating of the AutomationDirect GS21-10P2?
IP20, per DURApulse AC General Purpose Drive: 120 VAC, 1/4hp with 1-phase input, (VFD) (PN# GS21-10P2) | AutomationDirect (automationdirect.com).

Study notes

  • Rated 1/4 hp with 1-phase input; 1.6 A amperage rating and 1.8 A variable torque rating.
  • Input is 120 VAC single-phase; output is 230 VAC three-phase.
  • Control modes: SVC, V/Hz, FOC or torque.
  • Carrier frequency range 2-15 kHz; output frequency range 0.1-599 Hz.
  • Communications: one RS-485 (RJ45) port and one USB B port; Modbus RTU Slave and Modbus ASCII Slave up to 115.2k baud.
  • EtherNet/IP and Modbus TCP require an optional communication card; they are not built in.
  • I/O: 7 discrete inputs (24 VDC, sinking/sourcing), 3 discrete outputs (relay/sinking/sourcing, one Form C SPDT relay), 2 analog inputs and 1 analog output.
  • Analog input ranges 0-20 mA and 4-20 mA, +/-10 VDC, with 10-bit and 12-bit resolution; analog output 0-20 mA, 4-20 mA, 0-10 VDC at 10-bit.
  • Input signals accepted: 4-20 mA, voltage, potentiometer or pulse train; output type is PWM.
  • Programming language is ladder; connector type is spring clamp terminals.
  • Intended for 3-phase induction and permanent magnet AC motors.
  • AutomationDirect lists the item shipping weight as 2.3 lb and country of origin as India.

Safety

  • Safe Torque Off (STO) is built-in.
  • A user-supplied external fuse is required.
  • UL Listed File # E198015; CE declaration and RoHS status Yes; EU REACH document available; CSA file: none.
  • The drive has no integrated EMI filter.
  • Rated temperature range -20 to +50 deg C; enclosure type IP20, panel or wall mounting.
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