ATS480C79Y, ATS480 Series Soft Starter, 400 kW, 790 A, 208 to 690V AC

Schneider Electric ATS480 Soft Starter Series – Overview

Schneider Electric ATS480 soft starters are advanced motor control solutions designed to deliver smooth, controlled starting and stopping of asynchronous motors in demanding industrial environments. The ATS480 series focuses on reducing mechanical stress, limiting inrush current, and improving overall system reliability through intelligent control and integrated motor protection features. With robust design, advanced diagnostics, and flexible communication options, Schneider ATS480 soft starters are well suited for applications such as pumps, fans, compressors, conveyors, and process machinery. The ATS480 series supports energy-efficient motor operation while enhancing equipment lifespan and process stability across a wide range of industrial sectors.

Product Description: ATS480C79Y

The Schneider Electric ATS480C79Y is a heavy‑duty Altivar Soft Starter configured for large industrial motors. It is rated for 790 A (normal duty) with a heavy‑duty rating of 660 A at 40 °C, and supports a wide supply voltage range from 208 V to 690 V AC (50–60 Hz), making it compatible with common line and delta motor connections across international voltage classes. Typical motor power compatibility ranges up to several hundred kilowatts depending on system voltage (examples from manufacturer data: 400 kW at 400 V normal duty, up to 710 kW at 690 V normal duty, with corresponding heavy‑duty values per Schneider documentation). The ATS480C79Y provides torque (true torque) control for precise ramping and reduced mechanical stress, integrated motor protection (overload, phase loss, locked rotor, excessive starting time, underload and thermal protection), and multiple programmable inputs/outputs including three relay outputs and one analogue output. Control supply for the unit is 110–230 V AC. Communications and integration are supported via an RJ45 physical connector for Modbus/RS‑485 and a range of optional communication modules (Modbus TCP/EtherNet‑IP, PROFIBUS DP, PROFINET, CANopen options available as factory/field options). With IP00 enclosure rating and a design intended for process and infrastructure applications, this model is targeted at engineers and procurement teams specifying soft starters for pumps, compressors, conveyors and other large rotating machinery where high inrush limitation and advanced motor protection are required.

Key Soft Starter Attributes

• Rated Operational Current (Ie): 790 A (normal duty); 660 A (heavy duty at 40 °C).
• Motor Power Range: Manufacturer-listed examples up to 710 kW (690 V normal duty); 400 kW (400 V normal duty); 220 kW (230 V normal duty). Exact motor power depends on connection and duty class.
• Supply Voltage: 208–690 V AC, 50–60 Hz.
• Control Method: True torque control (torque regulation / voltage ramp functions supported).
• Built-in Bypass: External bypass (unit intended for external bypass arrangements as specified for this configuration).
• Motor Protection Functions: Integrated thermal protection, current overload, phase loss detection (motor and line), locked rotor, excessive starting time, underload protection.
• Communication Interfaces: RJ45 serial interface (Modbus RTU over RS‑485); optional communication modules available (Modbus TCP/EtherNet‑IP, PROFIBUS DP, PROFINET, CANopen) as configured.
• Enclosure / Protection Class: IP00 (open panel mount).

Frequently Asked Questions (FAQ)