Schneider Electric Altistart 46 ATS46C25N Soft Starter

Description

The ATS46C25N is an Altistart 46 soft starter controller designed for the controlled starting and stopping of three-phase asynchronous motors. This unit is engineered to reduce mechanical stress on drive trains and minimize electrical line disturbances (such as voltage drops) that typically occur during direct-on-line motor starts. As part of the legacy Altistart 46 range, the ATS46C25N offers advanced protection and control functions suitable for heavy-duty industrial applications, including pumps, fans, and compressors.

Features

• Motor Control: Soft start/soft stop functionality for three-phase squirrel cage motors
• Current Rating: 257 A
• Voltage Compatibility: Supports 208/230 V AC, 380/400 V AC, and 460/500 V AC (50/60 Hz)
• Performance: Designed to limit starting current peaks and provide smooth acceleration/deceleration
• Protection: Built-in motor thermal protection and fault monitoring

Applications

• Pumping systems (reducing hydraulic transients and pressure surges)
• Conveyor systems (preventing belt slippage and mechanical shocks)
• Fans and high-inertia machines (smooth starting to protect drive chains)
• General industrial compressors and processing machinery

Technical Specifications

Installation Guidelines

• Mounting: Install in a vertical position within a protected electrical cabinet to ensure proper airflow and cooling.
• Environment: Operate in an environment free from conductive dust, corrosive gases, and excessive moisture. Maintain ambient temperature within specified limits.
• Wiring: Use appropriate cable cross-sections based on the 257 A current rating. Ensure all connections are tightened to the torque values specified in the user manual.
• Safety: Always isolate the power supply before performing installation or maintenance. Ensure proper grounding of the starter chassis to the system ground bus to prevent electrical hazards.
• Bypass: The starter can be bypassed using an external contactor at the end of the starting period, if required by the application, to increase efficiency and reduce internal heating.