Allen-Bradley 150-F108NBR SMC-Flex Solid State Controller 108A

Technical Specifications Breakdown

Key parameters for the 150-F108NBR are listed below for quick reference:

Solid State Motor Control for Demanding Applications

This controller is designed as a versatile alternative to direct-on-line or star/delta starting methods, providing seven digitally adjustable starting modes to match your mechanical load requirements.

Industry Applications and Starting Mode Flexibility

The SMC-Flex platform offers seven starting modes that can be digitally programmed via the built-in HMI with backlit LCD and control buttons. This flexibility is critical for applications with mechanical stress or weak power grids. For example, a soft start mode reduces inrush current and torque spikes, protecting driven equipment and preventing voltage dips. The controller also supports external metering devices like a tachometer to display motor base speed percentage.

Installation and Setup Guidance

Mount the 150-F108NBR in a suitable enclosure that meets local electrical codes. Ensure the input line voltage matches your facility's supply (200-460V AC, 3-phase). Connect the 24V AC/DC control circuit per the wiring diagram provided with the unit. The front panel includes six status indicators (starting, at speed, stopping, stopped, alarm, fault) to aid commissioning and troubleshooting.

Maintenance and Reliability

Periodically inspect the controller for dust accumulation, loose connections, and signs of overheating. The open enclosure design requires a clean environment. Verify that the control voltage remains stable within the specified range. No internal adjustments are needed; all parameters are set digitally.

Evaluating the 150-F108NBR for Your Motor Control Needs

This buyer's guide helps you assess whether the 150-F108NBR fits your application. The controller's 108 A rating and 75 Hp at 460V AC output make it suitable for medium-horsepower motors in pumps, conveyors, fans, and compressors. Its open enclosure (NEMA type, IP 00) is intended for installation inside a clean, dry control panel. The 200-460V AC 3-phase input line voltage covers common global industrial power systems at both 50 and 60 Hz.

Compatibility and Integration

The 150-F108NBR includes four fully programmable auxiliary relay contacts that can be configured as normally-open or normally-closed. These contacts integrate with PLCs, motor control centers, and SCADA systems for status feedback and interlocking. The unit is UL listed and CE marked for low-voltage directives.

Selection Guide and Purchasing Advice

When selecting a solid state controller, match the amp and horsepower ratings to your motor nameplate. The 150-F108NBR is rated 108 A and 75 Hp at 460V AC. For motors with different voltages or power levels, consult the SMC-Flex selection chart. AutoDCSTech stocks this controller and can advise on availability. Please verify current lifecycle status and availability with AutoDCSTech before ordering.