Allen-Bradley 154-A11NB 11A 3-Phase Contactor 7.5 HP 480VAC 4kW 400VAC USA Made

Allen-Bradley 154-A11NB 11A 3-Phase Contactor

The Allen-Bradley 154-A11NB is a Starting Torque Controller (STC) designed to optimize the start-up of both single-phase and three-phase AC motors. By mitigating mechanical stresses and reducing vibration-related downtime, this controller ensures smoother motor initiations.

Key Features

• Voltage and Frequency: Operates within a voltage range of 380-480 VAC at 50/60 Hz.
• Current and Power Ratings: Supports a continuous current of 11 Amperes and accommodates motors up to 7.5 HP (4 kW).
• Adjustable Settings: Features selectable initial torque settings ranging from 10% to 80% of locked rotor torque and adjustable start times between 0.1 to 4.5 seconds, allowing for tailored motor acceleration.
• Construction: Built with high-temperature thermoplastic power poles and anodized aluminum components, ensuring durability and reliable performance.
• Protection: Equipped with an RC Snubber network for transient protection and provides overload protection through the motor starter.
• Certifications: Complies with CE, CSA, and UL standards, affirming its quality and safety.

Applications

The 154-A11NB is suitable for a variety of industrial applications, including:

• Conveyors
• Cranes
• Pumps
• Fans
• Mixers
• Grinders
• Elevators

Its design and features make it an effective solution for reducing mechanical stress during motor start-up, thereby enhancing the longevity and reliability of motor-driven systems.