Description
Product Name: 1333-KA4 Allen Braley Programmable controller
Product details:
The Allen-Bradley 1333-KA4 is a legacy, microprocessor-based Adjustable Frequency AC Drive (also known as a Variable Frequency Drive or VFD) manufactured by Rockwell Automation. It is engineered to control the speed, torque, and acceleration of standard three-phase AC induction motors.
It converts fixed-voltage, fixed-frequency utility power into a variable voltage and frequency output, allowing precise speed control and soft-starting capabilities for industrial machinery.
⚙️ Technical Parameters (Specifications)
Because this is a classic legacy drive, parameters can vary slightly based on the series revision (Series A, B, C, or D), but the foundational specifications for the Bulletin 1333 series include:
| Parameter | Standard Specification |
| Drive Type | Adjustable Frequency AC Drive (VFD) |
| Input Phase | 3-Phase |
| Input Voltage | Typically 460V AC (or 230V AC depending on the specific sub-model line) |
| Output Frequency Range | 0 to 120 Hz (or up to 240 Hz/400 Hz for high-speed variants) |
| Control Method | Volts-per-Hertz (V/f control) |
| Overload Capacity | 150% for 60 seconds |
| Enclosure Rating | Typically IP20 / Open Chassis or NEMA Type 1 |
| Programmable Parameters | Acceleration/Deceleration times, DC Braking, Boost levels, Restart modes |
✅ Product Advantages
- Proven Reliability: Built with industrial-grade components, Bulletin 1333 drives are famous for running decades without failure if properly maintained.
- Energy Savings: By adjusting the motor speed to match actual load demands (especially on fans and pumps), it dramatically cuts energy consumption.
- Soft-Starting Capability: Eliminates the high inrush currents and mechanical shocks associated with “Across-the-Line” motor starting, extending the life of both the motor and mechanical gears.
- Simple Integration: Easily integrates with legacy Allen-Bradley PLC systems using discrete I/O or optional BCD (Binary Coded Decimal) boards.
⚠️ Important Precautions (Usage & Safety)
🛑 Disclaimer: High-voltage AC drives can cause severe injury or death if handled improperly. Only qualified electrical personnel should install, wire, or troubleshoot this equipment.
- ESD Sensitivity: The internal printed circuit boards contain Electrostatic Discharge (ESD) sensitive components. Use a grounded wrist strap when servicing the interior.
- Heat Dissipation: If mounted inside an airtight enclosure, ensure adequate ventilation or use external heatsink mounting kits. Keep a minimum clearance of 4.0 inches (100 mm) at the top/bottom and 2.0 inches (50 mm) on the sides.
- Motor Cooling at Low Speeds: Standard AC induction motors rely on shaft-mounted fans. Running the motor at very low speeds for extended periods reduces cooling efficiency. External blower cooling may be required for continuous low-speed operations.
- Capacitor Discharge Time: After disconnecting the input power, wait at least several minutes for the internal DC-bus capacitors to fully discharge before touching terminal blocks.
🏭 Product Applications
The Bulletin 1333 series is widely utilized across various manufacturing and process industries, particularly for Constant Torque and Variable Torque applications:
- Material Handling: Conveyor belts, sorting systems, and small cranes.
- Fluid & Air Control: Centrifugal pumps, exhaust fans, blowers, and compressors.
- Industrial Machinery: Small mixers, grinders, packaging machines, and textile equipment.
Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!
We have the same series of models in stock. If you don’t find the model you need, please contact us and we will provide you with an official quotation！
Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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