{"id":"automationdirect-gs33-4020","model_id":"GS33-4020","name":"AutomationDirect GS33-4020","summary":"The GS33-4020 is an enclosed DURApulse GS30 series AC variable frequency drive for 460 VAC three-phase input, rated 20 hp. It controls three-phase induction and permanent magnet AC motors with SVC, V/Hz, FOC, encoder, or torque modes. It provides RS-485 Modbus RTU/ASCII communication, integrated dynamic braking, and built-in Safe Torque Off (STO).","study_notes":["Control modes: SVC, V/Hz, FOC, encoder, or torque.","Integrated dynamic braking is built in.","Communication ports: one RS-485 (RJ45) and one USB B.","Modbus RTU and Modbus ASCII slave protocols, up to 115.2k baud.","Carrier frequency range: 2–15 kHz; output frequency range: 0.1–599 Hz.","Analog I/O: 2 input channels (12-bit, current/voltage) and 1 output channel (10-bit, current/voltage).","Discrete I/O: 7 sinking/sourcing inputs at 24 VDC and 3 relay/sinking/sourcing outputs rated 240 VAC and 30 VDC.","Variable torque amperage rating is 36 A.","Designed for 3-phase induction and permanent magnet AC motors.","Programming language: ladder.","Optional communication, encoder, and I/O modules are available.","Input signals: 4–20 mA, voltage, potentiometer, or pulse train."],"safety_notes":["Built-in Safe Torque Off (STO) function is stated.","Enclosure rating is IP20; the drive is for panel or wall mounting.","Operating temperature range is -20 to +50 °C.","A user-supplied external fuse is required.","Agency approvals stated: UL Listed File E198015, CE, and RoHS. No UL Recognized, UL Hazardous, or CSA file is stated."],"sources":[{"url":"https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/high-performance_vfds/gs33-4020","title":"DURApulse AC High-performance Drive: 460 VAC, 20hp with 3-phase input, (VFD) (PN# GS33-4020) | AutomationDirect","accessed":"2026-10-26"},{"url":"https://cdn.automationdirect.com/static/specs/cutsheet/GS33-4020_cutsheet.pdf","title":"GS33 4020 cutsheet","accessed":"2026-10-26"}],"verification":{"status":"source_checked","checked_at":"2026-10-26","values":12,"method":"llm_source_check"},"updated_at":"2026-10-26","type":"hardware","spec":{"category":"vfd","manufacturer":"automationdirect","controllers":[],"weight_kg":5.1618811706,"supply_voltage":"460 VAC","rated_power_kw":14.91399744,"rated_current_a":32,"frame_size":"E","output_type":"PWM output","ip_rating":"IP20","operating_temp_min_c":-20,"operating_temp_max_c":50,"joints":[],"protocols":["modbus-rtu","modbus-ascii"],"standards":[],"error_codes":[]},"url":"https://machineschema.com/hardware/automationdirect-gs33-4020","license":"https://creativecommons.org/licenses/by/4.0/"}