# AutomationDirect DURApulse GS11N-21P0

Hardware · `GS11N-21P0` · verification: source checked

The GS11N-21P0 is an enclosed DURApulse GS10 series AC micro variable frequency drive. It takes single-phase 230 VAC input and produces three-phase 230 VAC output for 3-phase induction and permanent magnet AC motors, rated 1 hp with 1-phase input. It runs in SVC or V/Hz control mode and provides an RS-485 port for Modbus RTU/ASCII slave communication plus integrated dynamic braking.

## Specification

| Property | Value |
|---|---|
| Category | vfd |
| Supply voltage | 230 VAC |
| Rated power | 0.746 kW |
| Rated current | 4.8 A |
| Frame size | B2 |
| Output type | PWM output |
| IP rating | IP20 |
| Operating temp min | -20 °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): none.
- Enclosure IP20; enclosed, panel or wall mounting.
- Operating temperature rating -20 to +50 °C.
- User-supplied external fuse required for protection.
- UL Listed, file # E198015; UL Recognized and UL Hazardous files: none; CSA file: none.
- CE declaration and RoHS status: compliant (see CE document); EU REACH document provided.

## Study notes

- Rated 1 hp with 1-phase input; input phases 1, output phases 3.
- Amperage rating 4.8 A; variable torque amperage rating 5 A.
- Control mode selectable: sensorless vector control (SVC) or V/Hz.
- RS-485 port on RJ45 connector, speeds up to 38.4k baud, Modbus RTU Slave and Modbus ASCII Slave.
- Carrier frequency range 2–15 kHz; output frequency range 0.1–599 Hz.
- Analog I/O: 1 input channel (0–20 mA, 4–20 mA, 0–10 VDC, 12-bit) and 1 output channel (0–10 VDC, 12-bit).
- Discrete I/O: 5 sinking/sourcing inputs at 24 VDC and 2 outputs rated 240 VAC and 48 VDC; one Form C (SPDT) relay; load current 3 A/point relay, 50 mA/point discrete.
- Spring clamp terminals; mounting is panel or wall; frame size B2.
- Input signal options: 4–20 mA, voltage or potentiometer input; output type PWM; reverse capability built-in.
- No integrated EMI filter and not internally bypassed; a user-supplied external fuse is required.
- Item shipping weight stated as 2.85 lb.
- Configuration software listed as GSOFT2; GS10 firmware available separately.

## Sources

1. [DURApulse AC Micro Drive: 230 VAC, 1hp with 1-phase input, (VFD) (PN# GS11N-21P0) | AutomationDirect](https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/micro_vfds/gs11n-21p0) (accessed 2026-10-26)
2. [GS11N 21P0 cutsheet](https://cdn.automationdirect.com/static/specs/cutsheet/GS11N-21P0_cutsheet.pdf) (accessed 2026-10-26)

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