Product Overview
The Allen-Bradley 150-F1250NZE is a solid-state smart motor controller from the SMC-Flex product line, engineered for reliable starting and protection of 3-phase squirrel-cage induction motors. This industrial automation module delivers seven operational modes in a single package, simplifying motor control while reducing panel space and wiring complexity. With a controller rating of 1250 A and 1000 HP at 460V AC, the 150-F1250NZE handles high-power applications with ease.
Built-in features include an SCR bypass, current transformers on each phase, electronic motor overload protection, and DPI communication. The open enclosure design facilitates heat dissipation, and the unit operates across a wide input line voltage range of 230-690V AC, 3-phase, 50/60 Hz, making it adaptable to global installations.
Technical Specifications
The following table lists the key parameters for the Allen-Bradley 150-F1250NZE:
| Parameter |
Value |
| Manufacturer |
Allen-Bradley |
| Product Line |
SMC-Flex |
| Part Number |
150-F1250NZE |
| Controller Rating |
1250 A, 1000 Hp @ 460V AC |
| Input Line Voltage |
230-690V AC, 3-phase, 50/60 Hz |
| Control Voltage |
110/120V AC (625-1250 A units) |
| Rated Voltage |
690/YV AC |
| Enclosure Type |
Open |
| Weight |
32.00 lbs (14.51 kg) |
The 150-F1250NZE also offers robust electrical protection: a circuit peak inverse voltage of 1800V, rated IEC impulse voltage up to 6000V, and DV/DT protection via an RC network. Branch circuit protection uses a Class CC fuse with an 85 kA maximum fault limit. The control circuit operates at 110-120V AC with a minimum ON-state voltage of 85V AC at 20mA and a maximum OFF-state voltage of 50V AC at <10mA.
Key Features & Benefits
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Seven operational modes – Soft start, soft stop, and more, all in one unit.
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Built-in SCR bypass – Reduces heat and extends service life during continuous operation.
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Electronic motor overload protection – Eliminates the need for separate overload relays.
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DPI communication – Enables integration with control networks.
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Comprehensive protection – Guards against power loss, line faults, voltage imbalance, phase reversal, under-voltage, overvoltage, and stalling.
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4 programmable relay outputs – Configurable for normal, up-to-speed, fault, alarm, or network status.
Industry Applications
This controller is ideal for heavy-duty applications such as conveyors, pumps, compressors, fans, and crushers. For example, in a mining conveyor system, the Allen-Bradley 150-F1250NZE ensures smooth acceleration, reducing mechanical stress and preventing belt damage. In a water treatment plant, the soft-start functionality minimizes pressure surges in pipelines, extending pump life. The wide voltage range also makes it suitable for international projects where power systems vary.
Installation & Setup Guidance
When installing the 150-F1250NZE, follow these guidelines:
- Mount the controller in a well-ventilated area to maximize heat dissipation; the open enclosure requires adequate clearance.
- Ensure the input line voltage matches the motor's rated voltage within the 230-690V AC range.
- Wire the control circuit at 110/120V AC, observing the ON-state and OFF-state voltage thresholds.
- Use Class CC fuses for branch circuit protection, rated for the 85 kA fault current.
- Connect the DPI communication port to your control network for remote monitoring and parameter configuration.
Maintenance & Reliability
Regular inspection of the 150-F1250NZE is straightforward. Check the heatsink fan (150VA, 110-120V AC) for dust accumulation and proper operation. Monitor heat dissipation (max 1222W) to ensure the ambient temperature stays within the operating range of 23 to 122 °F. The unit's storage temperature is –4 to 167 °F at 5-95% humidity. With proper care, the solid-state design provides long-term reliability, reducing downtime and maintenance costs.
Compatibility & Integration
The 150-F1250NZE integrates seamlessly with Allen-Bradley control systems via its built-in DPI communication. It can be configured and monitored using standard programming tools. The relay outputs (4 programmable, 1 NC/NO each, 3600/360 VA MAKE/BREAK) can interface with PLCs, HMIs, or directly with alarm systems. The controller is cUL-us, CSA, CE, and CCC certified, ensuring compliance with major global standards.
Buying Guide
Before purchasing the Allen-Bradley 150-F1250NZE, verify your motor's full-load current and line voltage to ensure the controller rating matches. Confirm the enclosure type meets your environmental requirements—this open model is suitable for indoor, clean installations. For assistance, PLC Source PRO offers genuine Allen-Bradley parts and expedited shipping options.