Product Overview
When a motor control panel must handle high current, the Allen-Bradley 150-F251NZD SMC-Flex Industrial Automation Module provides solid state control in an open enclosure. This unit carries a controller rating of 251 A and 200 Hp @ 460V AC, with an input line voltage of 230-690V AC, three-phase, 50 and 60 Hz. The 150-F251NZD belongs to the SMC-Flex product line within the Drives category.
For plants upgrading from electromechanical starters, the Allen-Bradley 150-F251NZD offers a reliable path to smart solid state motor control. Buyers can verify the exact controller rating and line voltage before installing this unit.
Technical Specifications
Use the confirmed specifications below to evaluate the Allen-Bradley 150-F251NZD against your motor and system requirements.
| Parameter |
Value |
| Manufacturer |
Allen-Bradley |
| Category |
Drives |
| Product Line |
SMC-Flex |
| Part Number |
150-F251NZD |
| Weight |
32.00 lbs (14.51 kg) |
| Bulletin Number |
Solid State Controller |
| Enclosure Type |
Open |
| Controller Rating |
251 A, 200 Hp @ 460V AC |
| Input Line Voltage |
230-690V AC, 3-phase, 50 and 60 Hz |
| Control Voltage |
100-240V AC (5-480 A units) |
| Rated Voltage |
690/Y§V AC |
The 251 A controller rating defines the current capacity for this SMC-Flex controller. The 200 Hp @ 460V AC rating shows the motor load supported at that voltage. Input line voltage of 230-690V AC, three-phase gives flexibility for 50 or 60 Hz systems. The control voltage range of 100-240V AC applies to units rated 5-480 A, which includes the 150-F251NZD. The open enclosure and 32.00 lbs (14.51 kg) weight are important for panel planning.
Real-World Applications
Pumping, fan, and conveyor applications frequently use the Allen-Bradley 150-F251NZD when the motor controller rating must reach 251 A. The 200 Hp @ 460V AC rating supports large three-phase motors found in production lines and plant utilities. The 230-690V AC input line voltage, three-phase, 50 and 60 Hz operation suits facilities that rely on multiple supply voltages. The open enclosure configuration fits within a larger industrial control panel.
Installation & Setup Considerations
Before mounting the Allen-Bradley 150-F251NZD, check the nameplate data against the specifications in this listing. Confirm that the incoming three-phase supply matches 230-690V AC and that the system frequency is 50 or 60 Hz. Verify the controller rating of 251 A is compatible with the motor full-load current. Provide 100-240V AC control voltage to the control circuit. Keep the open enclosure clear of debris and allow space for wiring access.
Maintenance & Reliability
Routine inspections of the Allen-Bradley 150-F251NZD should focus on the input line voltage and ambient conditions. Keep the open enclosure free of dust and moisture. Check connections for tightness and look for signs of overheating. Because the 150-F251NZD is a solid state controller, mechanical contact wear is less of a concern than with traditional motor starters. Regular panel inspections help maintain long service life.
Sourcing Information
For sourcing the Allen-Bradley 150-F251NZD, PLC Source PRO specializes in industrial automation parts and control system spares.