On modern production lines driven by three-phase asynchronous motors, the reliability and safety of the power source are the primary tasks. The SPX high-quality AC Magnetic Motor Starter is the key equipment born for this purpose. It is not a simple switch, but an intelligent electromechanical unit that integrates instruction execution, status control, and fault protection. Like an tireless "commander" and "guardian", it faithfully executes start stop commands from buttons, PLCs, or sensors, while constantly monitoring the motor's operating status, quickly cutting off power in case of abnormalities, and safeguarding the motor and production safety.
Control and protection of various centrifugal pumps, circulating pumps, and water supply and drainage pumps.
Start stop management of cooling fans, air conditioning fans, and boiler induced draft fans.
AC Magnetic Motor Starter can be used as a drive control for conveyor belts, elevators, and screw feeders.
Main motor control for equipment such as compressors, crushers, mixers, and machine tools.
The contactor (actuator) and overload relay (protective brain) are deeply integrated physically and electrically, eliminating complex wiring nodes between discrete components. This not only reduces over 60% of the control circuit wiring, but also fundamentally reduces the risk of protection failure caused by loose lines and poor contacts, resulting in a qualitative improvement of the overall system.
The integrated structure of AC Magnetic Motor Starter saves about 40% of cabinet installation space compared to separate installation, significantly shortens installation and commissioning time, and reduces overall costs.
The built-in thermal relay adopts inverse time protection characteristics that match the heating characteristics of the motor. The larger the overload current, the shorter the action time, effectively preventing damage to the motor insulation due to overheating.
Continuously monitor the three-phase current and act quickly in case of power phase loss or severe current imbalance to avoid motor burnout during single-phase operation.
When the power supply voltage is severely low or suddenly loses power, the contactor will automatically disconnect; After the voltage is restored, it will not start automatically to prevent the danger caused by accidental startup, and manual reset is required.
The core components of AC Magnetic Motor Starter are optimized for frequent start stop industrial scenarios, with a mechanical lifespan of millions of times and an electrical lifespan (AC-3 category) typically exceeding hundreds of thousands of times.
The coil and electronic protection circuit have good resistance to voltage fluctuations and electromagnetic interference, and can work stably in complex industrial power grid environments.
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Wei 12 Road, Economic Development Industrial Zone, Yueqing, Zhejiang, China
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