By-pass Soft Starter

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By-pass soft starter uses bypass technology to provide smooth motor starting while reducing inrush current and mechanical stress. It is designed for reliable operation of industrial 3-phase motors.

Key Features & Applications

Requires external contactors to complete the bypass function and switches to direct AC operation after start-up to reduce heat and improve efficiency. Suitable for pumps, fans, conveyors, HVAC systems, and other continuous-running industrial equipment.

Technical Parameters

Typical technical parameters of our by-pass soft starters are listed below.
Custom specifications are available upon request.

Parameter	Specification
Input Voltage	220V/380V/440V/480V/660V/690V (Three-phase)
Rated Power	5.5KW – 1000KW
Start Method	Soft start / Soft stop
Start Time	Adjustable 0–60s
Ambient Temperature	-10°C to +60°C
Protection Features	Overload, Under-voltage, Phase failure, Overheat, Short-circuit
Control Options	Local switch (R1) / Remote start (R2)
External Contactor Required	Yes, required during installation and wiring for bypass functionality

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Available Models (5.5 kW – 1000 kW)

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Explore Our Motor Soft Starters Series

SoftStarterPro

Founded in 2015, We focus on designing and producing soft starters, variable frequency drives, SCR power controllers, and power modules with stable quality and fast delivery. With factory-direct service and years of engineering experience, we provide customers with efficient and cost-effective power control solutions.

Contact Us

Ann | +86 18006697926 (WhatsApp / WeChat) Email: ann@softstarterpro.com Address: Dongan Industrial Zone, Liushi Town, Wenzhou, Zhejiang, China, 325600