Product Description

1AC4102G is a general-purpose V/Hz AC variable frequency drive from Reliance Electric (Rene Electric), part of the GP-1200 series. It has a power of 2HP (1.5kW), with a three-phase input voltage range of 380–460VAC, a global version (G = Global), and is used to drive standard induction motors. It is suitable for light industry and commercial equipment. It has been discontinued and is mostly available as refurbished or inventory spare parts for replacing and maintaining old systems.

 Model Number Interpretation

1: 1AC Series (GP-1200 platform)

AC: AC variable frequency drive

4102: 460V level, 2HP power

G: Global version, 380–460VAC universal (different from 1AC4102U which is only 460V) Technical Specifications

Input: Three-phase 380–460VAC (±10%), 50/60Hz; Maximum input current 4.2A

Output: Three-phase 380–460VAC; Maximum output current 3.4A; Rated capacity 2.7kVA

Power: 2HP (1.5kW) continuous

Control: Open-loop V/Hz; Speed ratio 20:1; Output frequency 0–400Hz

Case: NEMA 1, IP20 (for indoor use only)

Protection: Overcurrent, overvoltage, undervoltage, overheating, short circuit, grounding fault, motor locked rotor

Environment: 0–45°C, relative humidity 5%–95% (no condensation)

Weight: Approximately 11.3kg

 Interface & Communication

Main circuit terminals: L1/L2/L3 (input), U/V/W (motor), PE (ground)

Control terminals: Digital (start/stop / forward/reverse / fault reset); Analog (0–10VDC speed setting); Relay fault output (250VAC/5A)

Communication: No built-in communication port, only hard-wired control

 Core Functions

Open-loop V/Hz, compatible with standard induction motors, stable speed under load fluctuations

Wide voltage range of 380–460V, universal for global power grids, replacing multi-voltage models

0–10VDC analog speed control, compatible with potentiometers and PLCs

Complete electrical/thermal protection, protecting the driver and the motor

Direct replacement of the old 1AC series, compatible with legacy systems Applications

Small conveyors, fans, water pumps, mixers (2HP motor)

Light industrial equipment, commercial HVAC/ventilation systems

Renovation and maintenance of old industrial/commercial frequency conversion systems 

Installation & Maintenance

Vertically installed in a clean, dry and ventilated room, leaving space for heat dissipation

Use rated copper cables, separate power lines and control lines for wiring to reduce EMI

Check all connections before powering on; regularly check for any looseness in terminals / wiring

Clean after power off, wipe with a dry cloth, do not use liquids / chemical cleaners

Regularly inspect heat sinks / terminals to prevent overheating and corrosion

Determine faults through panel indicator lights, remove faults and then restart

Inside is electrostatic sensitive, do not disassemble without professional knowledge; spare parts should be stored in a cool, dry and dust-free environment