Eaton S801R13N3S S801+ Soft Starter

The Eaton S801R13N3S is a high-performance reduced voltage soft starter from the S801+ series, engineered for smooth and reliable control of three-phase AC induction motors. With a robust current rating of 135 amperes and an operating voltage range of 200 to 600 VAC, it is ideally suited for demanding industrial applications such as pumps, fans, conveyors, and compressors. The S801+ series is known for its compact design, ease of use, and integrated bypass contactor, which minimizes heat generation and energy losses during full-speed operation.

Key Features

• Current rating: 135 A (continuous)

• Voltage range: 200-600 VAC, 50/60 Hz

• Frame size: R-frame, 3-pole configuration

• Integral run-bypass contactor for reduced heat dissipation

• Multiple start modes: soft start, full voltage start, and wye-delta start

• User-friendly control interface module with LCD display

• Modbus RTU communication built-in

• Adjustable ramp times and current limit settings

• Protection features: overload, overcurrent, overvoltage, and overtemperature

• Wide operating temperature: -30 °C to +50 °C

Technical Specifications

Performance and Protection

The S801R13N3S employs solid-state SCRs to gradually ramp up motor voltage, reducing inrush current and mechanical stress on driven equipment. The integral bypass contactor automatically closes when the motor reaches full speed, eliminating SCR power losses and improving overall efficiency. Comprehensive electronic protection includes motor overload (I²t), phase loss, phase imbalance, and stalled rotor detection. The control interface provides diagnostic LEDs and a backlit LCD for real-time status monitoring and fault logging.

Applications

• Centrifugal pumps and submersible pumps

• Industrial fans and blowers

• Conveyors and material handling systems

• Air compressors and chillers

• Mixers, crushers, and mills

Installation and Configuration

The R-frame starter is designed for panel mounting with teardrop mounting holes for easy installation. The control module features a plain-text LCD and keypad for parameter adjustment without external software. Parameters such as ramp time (1-60 seconds), initial torque (0-90%), and current limit (100-500% of motor FLA) are field-adjustable. The integrated Modbus RTU port enables remote monitoring and control via PLC or SCADA systems.

With its rugged construction and versatile features, the Eaton S801R13N3S soft starter delivers reliable motor control while extending equipment life and reducing energy costs.