# AutomationDirect GS4-45P0

Hardware · `GS4-45P0` · verification: source checked

The GS4-45P0 is a DURApulse GS4 series AC variable frequency drive rated 5 hp with a 3-phase 460 VAC input and output. It controls 3-phase induction motors in either sensorless vector control (SVC) or V/Hz mode and has integrated dynamic braking. It is a NEMA 1, IP20, A-frame unit mounted on a panel or wall, with an RS-485 port, embedded ladder programming and optional EtherNet/IP and Modbus TCP cards.

## Specification

| Property | Value |
|---|---|
| Category | vfd |
| Supply voltage | 460 VAC |
| Frame size | A |
| IP rating | IP20 |
| Operating temp min | -10 °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) is built-in.
- A user-supplied external fuse is required.
- Operating temperature rating -10 to +50 °C.
- Enclosure type NEMA 1 with IP20 rating.
- UL Listed, file # E198015; UL Recognized and UL Hazardous files listed as none.
- CE marked; RoHS status yes; EU REACH document available; CSA file listed as none.

## Study notes

- Rated 5 hp with 3-phase input; amperage rating 8.1 A, variable torque amperage rating 9 A.
- Control mode selectable between SVC (sensorless vector control) and V/Hz.
- Onboard I/O: 8 discrete inputs at 24 VDC (sinking/sourcing), 4 discrete outputs at 240 VAC and 48 VDC, 3 analog inputs and 2 analog outputs.
- Discrete outputs include 2 Form C (SPDT) relays; load current 3 A/point relay, 50 mA/point discrete.
- Analog input resolution 11-bit (0–20 mA, 4–20 mA, ±10 VDC); analog output resolution 10-bit (0–20 mA, 4–20 mA, 0–10 VDC).
- Carrier frequency range 2–15 kHz; output frequency range 0.1–599 Hz.
- Communication port is RS-485 (RJ12) at up to 115.2k baud; port protocols listed are Modbus RTU, Modbus ASCII and BACnet.
- Optional EtherNet/IP and Modbus TCP cards are available; these are add-on cards, not built into the base drive.
- Embedded drive PLC is programmed in ladder using GSLOGIC software; GSOFT2 is the configuration software.
- No integrated EMI filter; reverse capability is built in; not internally bypassed.
- Connector type is screw terminals; intended for use with 3-phase induction motors.
- Shipping weight as stated on the item page is 7.5 lb.

## Sources

1. [DURApulse AC High-performance Drive: 460 VAC, 5hp with 3-phase input, (VFD) (PN# GS4-45P0) | AutomationDirect](https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/high-performance_vfds/gs4-45p0) (accessed 2026-10-26)
2. [GS4 45P0 cutsheet](https://cdn.automationdirect.com/static/specs/cutsheet/GS4-45P0_cutsheet.pdf) (accessed 2026-10-26)

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