Product Overview
The Allen-Bradley 1336-C003-EOD is an adjustable frequency AC drive belonging to the legacy Allen-Bradley Bulletin 1336 series from Rockwell Automation. It is designed to provide precise speed and torque control for three-phase induction motors in industrial applications. By varying the frequency and voltage supplied to the motor, the drive enables smooth acceleration, deceleration, and continuous speed adjustment without the need for electromechanical speed control components. This makes it suitable for both constant-torque and variable-torque loads across a wide range of process and machine control applications.
The Allen-Bradley 1336-C003-EOD is configured for higher-voltage three-phase power systems. Based on the standard Bulletin 1336 coding, the “C003” rating identifies the drive’s output current class, while the input voltage category supports 500, 575, and 600 V AC operation at 50/60 Hz. The drive uses microprocessor-based control and PWM output to regulate motor performance. It typically provides an output current of 4.3 A and is suitable for motors in the 3 HP class, depending on application voltage and load characteristics.
As an open-style drive, the Allen-Bradley 1336-C003-EOD is intended for panel or enclosure installation where environmental conditions can be controlled. It includes standard drive protection features such as overcurrent, overvoltage, undervoltage, motor overload, and ground-fault protection. Because the Bulletin 1336 family is now considered legacy hardware, the Allen-Bradley 1336-C003-EOD is commonly supplied as a replacement or spare drive for plants maintaining long-installed motor control systems. Keeping verified units available helps reduce unplanned downtime and extends the service life of existing automation assets.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 1336-C003-EOD |
| Manufacturer | Rockwell Automation / Allen-Bradley |
| Product Type | Adjustable Frequency AC Drive |
| Bulletin/Series | Bulletin 1336 |
| Input Voltage | 500/575/600 V AC |
| Input Frequency | 50/60 Hz |
| Input Phases | 3-phase |
| Output Current | 4.3 A |
| Approximate Rating | 3 HP class, application dependent |
| Output Frequency | 0–400 Hz |
| Control Method | Microprocessor-based PWM control |
| Enclosure Type | Open chassis, IP00 |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | -40°C to +85°C |
| Cooling Method | Forced air |
| Mounting | Panel or enclosure |
| Country of Origin | United States |
Main Features and Advantages
Precise adjustable speed control
The Allen-Bradley 1336-C003-EOD allows operators to vary motor speed smoothly across a wide frequency range. This capability improves process control, reduces mechanical stress during starting and stopping, and helps match motor speed to actual production requirements.
Constant-torque performance
With its current-oriented drive architecture, the Allen-Bradley 1336-C003-EOD is well suited to constant-torque applications where load demand remains relatively steady across the speed range. This includes conveyors, augers, feeders, and positive-displacement equipment.
Microprocessor-based control
The drive uses digital control logic to manage acceleration, deceleration, frequency reference, and protection functions. This provides repeatable performance and allows parameters to be configured for the connected motor and application.
Integrated motor protection
The Allen-Bradley 1336-C003-EOD includes protection against overcurrent, overvoltage, undervoltage, motor overload, and ground faults. These functions help safeguard both the drive and the connected motor, reducing the risk of unexpected equipment damage.
Smooth starting and stopping
By controlling acceleration and deceleration ramps, the drive minimizes inrush current and mechanical shock. This extends the service life of belts, gearboxes, bearings, and other driven components.
High-voltage industrial compatibility
Designed for 500, 575, and 600 V AC three-phase systems, the Allen-Bradley 1336-C003-EOD is compatible with many North American and industrial high-voltage motor installations. This makes it suitable for plants operating at 575 V nominal supply voltages.
Legacy replacement availability
The Allen-Bradley 1336-C003-EOD provides a practical replacement path for existing Bulletin 1336 installations. Maintaining a spare drive helps plants avoid complete process shutdowns caused by drive failure and supports continued operation of established motor control systems.
