Soft start/soft stop motor controller

New Enclosed Altistart 22 soft start/soft stop motor controller by Schneider Electric offers advanced performance and reliability in a packaged starter.


Schneider Electric's Enclosed Altistart 22 soft start/soft stop motor controller includes an integrated circuit breaker disconnect and soft starter in a stand-alone enclosure. These new solid-state combination motor controllers provide a pre-engineered, integrated solution which helps to reduce voltage starting and soft stopping of standard three-phase asynchronous induction (squirrel cage) motors.

Advanced protection and improved machine performance

The Enclosed Altistart 22 soft start/soft stop motor controller, with integrated bypass functions, allows customers to extend the service life of their machines through reducing wiring costs, simplifying installation, and ultimately achieving greater energy efficiency. The integrated bypass reduces the number of external components, such as power wiring, contactor, and control wiring for coil, while also decreasing heat dissipation and allowing for a smaller enclosure. 

Energy efficiency with simple system integration and control

The Enclosed Altistart 22 unit provides a cost-effective solution featuring a complete low voltage offering of horsepower ratings up to 125 hp at 480V.  In addition, the unit is fitted with an over-current protection device, shorting (bypass), and isolation, which eliminates the need for any additional components. The conformal-coated, printed circuit boards provide enhanced resistance to harsh environments, increasing the service life of installations and lowering maintenance costs. With its energy efficient features, such as reduced current inrush, reduced voltage drop and mechanical shocks, the Enclosed Altistart 22 controller offers an ideal solution for customers’ basic motor control needs.

“This line of the enclosed soft start/soft stop motor controllers offers economical and easy-to-configure solutions for a number of applications, including irrigation, conveying, commercial buildings, and educational facilities,” says Gerald Dixon, product specialist for Schneider Electric. “Available in a wide range of fully functional models, these motor controllers provide users with the flexibility to select the pre-engineered and “build-to-order” packaged product based on their machine’s power, performance, and functionality requirements.”

Schneider Electric

- Edited by Amanda McLeman, Control Engineering,

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