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What is a Changeover and Its Different Types?

A white hand setting up a MCB in a panel.

What is a Changeover?

A changeover switch is a device that seamlessly transitions the power supply from one source to another. This ensures an uninterrupted power supply, especially during power outages or failures. Changeovers are essential in various settings, including residential, commercial, and industrial applications, providing reliability and efficiency in power management.

Types of Changeovers

Relay Type Changeovers

Overview: Utilize electromagnetic relays to switch power sources.

Usage: Cost-effective, and suitable for residential and small commercial applications.

PMC Type Changeovers

Overview: Advanced Power Management Control (PMC) for real-time monitoring and control.

Usage: It is ideal for industrial and commercial settings needing advanced power management.

Contactor Type Changeovers

Overview: Use contactors to switch power sources, ensuring reliable performance.

Usage: Common in residential and commercial applications for their reliability.

Motorized Type Changeovers

Overview: Employ motorized mechanisms for automatic power source switching.

Usage: Suitable for applications requiring frequent and automatic switching.

ACB Type Changeovers

Overview: Air Circuit Breaker (ACB) changeovers with high capacity switching and enhanced safety.

Usage: It is a deal for large industrial facilities needing high power capacity and safety.


Subtech Electronics offers a variety of changeovers to meet different power management needs. From simple relay types to advanced PMC and ACB types, Subtech ensures reliable and efficient power solutions for various applications.

Subtech Electronics is your trusted partner for all power management needs, providing robust and reliable changeover solutions tailored to different applications.

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