Overview
The Allen-Bradley 1333-AAA/C is an adjustable frequency AC drive engineered for cost-effective variable frequency control of three-phase motors. This 1 horsepower (0.75 kW) drive operates from 200/208/230V AC, 50/60 Hz input power and features NEMA Type 1 (IP20) enclosure protection. The 1333-AAA/C is discontinued by the manufacturer but remains available as surplus stock, making it an economical solution for existing installations requiring drop-in replacement or repair.
Key Features
- 1 HP (0.75 kW) output power rating for reliable three-phase motor control
- Input voltage range: 200/208/230V AC, 50/60 Hz, 3-phase nominal
- Pulse width modulated (PWM) control output for smooth motor acceleration and deceleration
- NEMA Type 1 (IP20) enclosure suitable for indoor industrial environments
- Compact design with power terminal block connections for straightforward installation
- V/Hz control method for standard induction motor speed regulation
Technical Specifications
- Output Power: 1 Horsepower (0.75 kW)
- Input Voltage: 200/208/230V AC, 50/60 Hz, 3-phase
- Output Voltage: 0–200/208/230V AC, 3-phase
- Apparent Power: 2.6 kVA @ 230V (3-phase nominal)
- Output Current: 3.8 A nominal
- Enclosure Type: NEMA Type 1 (IP20)
- Heat Dissipation: 100 Watts (341 BTU/hr)
- Operating Temperature Range: -10°C to +50°C
- Connections: Power Terminal Block (PTB), lower main control board location
- Control Method: V/Hz (Volts-per-Hertz)
- Modulation: Sinusoidal PWM waveform output
- Series: Allen-Bradley 1333 (Legacy/Discontinued)
Typical Applications
The 1333-AAA/C is suited for low-power variable frequency drive applications including:
- HVAC and fan motor speed control for energy efficiency
- Conveyor and material handling systems with adjustable throughput
- Pump applications requiring flow modulation
- Manufacturing equipment with variable load demand
- Legacy system upgrades and maintenance repairs
Compatibility & Replacements
The 1333-AAA/C is a legacy Allen-Bradley model and has been discontinued by Rockwell Automation. For new installations, Rockwell’s current PowerFlex 40 and PowerFlex 523 variable frequency drive families offer compatible performance and improved features. The 1333-AAA/C 3-phase model differs from the 1333-AAB (380/415/460V) and the single-phase derated variant (1333-AAA derated). Technicians replacing this drive should verify motor nameplate voltage, horsepower, and frame size to ensure compatibility with modern alternatives. Surplus and refurbished 1333-AAA/C units are available through qualified industrial automation distributors and do not include original manufacturer warranty; however, distributor warranties typically apply.
