The 150-F43NBR is a solid-state controller manufactured by Allen-Bradley. It belongs to the products line of SMC-Flex and has a 43A controller rating, coupled with 30 Hp at 460 Volts AC. The 150-F43NB works with a 24 Volt AC/DC control voltage, with a range of 5 to 480 A units. The 150-F43NB also has an input voltage of 200 to 460 Volts AC, 3 phase, at 50 to 60 Hertz. The 150-F43NB as a solid state controller is used to operate a standard three-phase squirrel cage induction and 6-lead motor. The 150-F43NB has a range of starting modes, which include soft start with selectable kickstart, current limit with a selectable kickstart, Dual Ramp start with a selectable kickstart, Full Voltage start, Preset slow speed Linear speed Acceleration with selectable kickstart (which requires a Tach Feedback), and a Soft stop.

The 150-F43NB can be programmed with its built-in keypad and LCD display. It also has the option of programming from the HIM LCD human interface module. The 150-F43NB has certain typical wiring patterns which must be followed during installation. Proper care must be taken to ensure that the 150-F43NB is properly installed, including mounting and wiring. If the 150-F43NB is incorrectly applied or installed, some of its component parts could be damaged and its overall product life could be shortened. The user should watch out for application errors, such as undersizing the motor or oversizing the controller. Quality power and recommended temperature ranges should be provided, all of which is in order to prevent a malfunction in the system. An isolator contactor circuit breaker type is also recommended on the line side of the 150-F43NB, in order to further prevent injury and damage. The 150-F43NB meets all requirements that are applicable to a motor overload protective device. To further ensure safety and long-lasting usage, this module comes with a thermal memory which is still maintained even when the control power is removed.