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Designed to withstand up to 477 FLA (at 200-480 VAC), SR55 full-featured solid-state soft starters are available in three frame sizes and provide many advantages over electromechanical contactors. SR55 soft starters are fully digital, provide full motor overload protection, and use thyristors in all three motor phases for controlled, reduced voltage motor starting and stopping.
SR55 soft starters are used in general purpose soft start motor control applications where traditional across-the-line starting or wye-delta starting would typically be appropriate and are ideal in applications requiring lower inrush currents. SR55s also have a built-in internal bypass and patented iERS (intelligent Energy Recovery System) that reduces energy costs when used on lightly loaded and oversized motors.
