Power outages can occur at any time, and the effects on families, companies, and industries can be severe. Appliances may be broken, production lines may stop, and essential services may be disrupted. This is why investing in a dependable power backup system is critical—and an automatic Changeover Switch is at the heart of every successful backup configuration. Selfguard, a trusted name in automation and controls since 1990, provides a specialised line of automatic changeover switches that make power switching simple, safe, and efficient.
What is an Automatic Changeover Switch?
An Automatic Changeover Switch is a device that automatically switches the electrical load from the main power supply to a backup generator. When the mains fail, the switch sends the load to the generator; when power is restored, it returns the load, assuring continuous supply without manual effort.
Why is it Important in Power Backup Systems?
Seamless Transition – Quick and automatic transfer of load avoids interruptions in essential operations.
Protection for Appliances – Smooth transfer prevents voltage fluctuations and protects sensitive equipment.
Safety – Eliminates risks associated with manual switching and reduces chances of electrical mishaps.
Convenience – No rushing during power cuts; the system handles the switching on its own.
Selfguard’s Range of Automatic Changeover Switches
Single-Phase Automatic Changeover Switch (CSNF)
- Ideal for home and small business applications.
- Ensures the continuity of appliances such as lights, fans, refrigerators, and other critical equipment.
- Available with current ratings ranging from 40 A to 200A.
- Its tiny size makes it simple to install in households and small offices.
Three-Phase Automatic Changeover Switch (CTF)
- Designed to power single-phase loads from a three-phase supply.
- Relay-based system that can handle loads of up to 200 A.
- Available in several ratings (63 A, 100 A, 150 A, and 200 A) to meet a variety of needs.
- Suitable for household and small business applications with a three-phase input.
Why Choose Selfguard?
With more than three decades of expertise, Selfguard is known for its commitment to quality, durability, and safety. Their Changeover Switch range is:
- Durable – Built from high-quality components to withstand heavy use.
- Reliable – Tested under strict quality checks for consistent performance
- Versatile – Available in models for both homes and industrial applications.
Conclusion
An Automatic Changeover Switch is a must-have for any power backup system, ensuring continuous power supply while also protecting appliances and people. Whether it's the Single-Phase CSNF for homes and small workplaces or the Three-Phase CTF for setups that draw single-phase loads from three-phase mains, Selfguard offers efficient and reliable solutions. Selfguard does more than just control outages; it also keeps you switched on, safely and smoothly.