The SSR-100WA-R 4kW Motor Soft Starter is an electronic motor control module designed to reduce the mechanical and electrical stress associated with direct motor startup.

By gradually increasing the voltage supplied to the motor, the soft starter helps reduce starting current, mechanical shock, and sudden acceleration.

Featuring adjustable startup voltage and soft-start time, the module is suitable for compatible AC motors used in water pumps, ventilation fans, conveyors, and industrial equipment.

Key Features

• 4kW Rated Power: Designed for compatible AC motor applications up to the specified rating.
• Soft Start Control: Gradually increases motor voltage during startup.
• Adjustable Starting Voltage: Supports approximately 20–50% of rated voltage.
• Adjustable Startup Time: Soft-start duration adjustable from 0 to 30 seconds.
• Reduced Mechanical Stress: Helps minimize sudden torque and mechanical shock.
• Solid-State Operation: Electronic voltage control without mechanical switching contacts.
• Compact Module Design: Suitable for installation inside electrical control enclosures.
• Industrial Applications: Designed for compatible pumps, fans, conveyors, and motor-driven equipment.

Technical Specifications

Operating Principle

The SSR-100WA-R controls the voltage applied to an AC motor during startup.

1. Initial Startup: The motor receives a reduced starting voltage.
2. Voltage Ramp: The output voltage gradually increases over the selected startup period.
3. Normal Operation: The motor reaches its normal operating voltage.

This process helps reduce abrupt mechanical movement and starting stress.

Applications

• Water Pump Motors
• Ventilation Fans
• Belt Conveyors
• Industrial Machinery
• Motor-Driven Equipment
• HVAC Applications
• Compatible AC Motor Starting Systems

Important Notes

• High-Voltage Equipment: Installation must be performed by qualified electrical personnel.
• Confirm motor type, rated voltage, full-load current, and starting requirements before selecting this module.
• The advertised 4kW rating must be verified against the manufacturer's operating conditions.
• The 380V application must be confirmed using the exact manufacturer's wiring documentation.
• Soft starters are not variable-frequency drives (VFDs) and do not provide continuous motor speed control.
• Soft starting reduces starting torque as well as starting voltage; suitability depends on the connected load.
• External overload protection, short-circuit protection, and appropriate heat dissipation may be required.
• Do not use with DC motors.

Package Includes

• 1 × SSR-100WA-R 4kW AC Motor Soft Starter Module