Product Overview
The 150-F135NCDD is a Bulletin 150 solid-state controller from Allen-Bradley, designed for open enclosure installations. It delivers reliable starting and stopping for three-phase induction motors, with a focus on reducing mechanical stress and electrical disturbances. This controller integrates braking control, making it suitable for applications requiring rapid deceleration.
Technical Specifications Breakdown
Key parameters for the 150-F135NCDD are listed below for quick reference:
| Feature | Specification |
|---|---|
| Controller Type | Bulletin 150, Solid State Controller |
| Enclosure Type | Open |
| Input Line Voltage | 200...600V AC, 3-Phase, 50/60Hz |
| Control Voltage | 100...240V AC |
| Control Options | Braking Control |
Industry Applications
Pump and Fan Control
In water treatment and HVAC systems, the 150-F135NCDD provides soft start and stop capabilities, reducing water hammer and mechanical shock. The braking control option allows for quick stops in emergency scenarios, enhancing system safety.
Conveyor Systems
For material handling, this controller manages acceleration and deceleration of conveyor belts, minimizing product spillage and belt wear. The 135 A rating supports motors up to 100 Hp at 460V AC, covering medium-duty conveyor lines.
Compressor Stations
In compressed air systems, the SMC-Flex controller reduces inrush current during startup, protecting upstream electrical components. The integrated braking control helps halt compressors rapidly during maintenance cycles.
Installation & Setup Guidance
Mount the open-style controller in a clean, dry enclosure rated for the environment. Ensure the input line voltage matches the 200...600V AC, 3-phase supply. Connect control wiring to the 100...240V AC control voltage terminals. For braking control, verify that the motor is compatible with DC injection braking. Use torque values specified in the manual for power and control connections.
Maintenance & Reliability
Periodically inspect the controller for dust accumulation on heat sinks and ensure ventilation paths are clear. Check all power and control connections for tightness. The solid-state design minimizes moving parts, but thermal cycling can affect longevity. Monitor ambient temperature to stay within the operating range.
The Evolution of Motor Control
Industrial motor control has evolved from simple electromechanical starters to sophisticated solid-state controllers that optimize performance and reduce wear. The Allen-Bradley 150-F135NCDD SMC-Flex Open Smart Motor Controller represents this advancement, offering precise control for demanding applications.

Compatibility & Integration
The 150-F135NCDD integrates with standard three-phase induction motors. It communicates via discrete I/O for start/stop and status signals. For advanced monitoring, consider adding a communication module (sold separately). The braking control option requires a compatible motor and external braking resistor.
Selection Guide & Purchasing Advice
When selecting the 150-F135NCDD, verify that your motor full-load current does not exceed 135 A. For applications requiring frequent starts or high inertia loads, consult the SMC-Flex selection guide. AutoDCSTech stocks this controller and can assist with availability and lifecycle status. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 150-F135NCDD |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
