Description
The Automatic Changeover 120A Relay AC 220V is a powerful and reliable solution designed to automatically switch between two power sources such as WAPDA (Main Supply) and Generator, ensuring uninterrupted power flow during outages. This high-current heavy-duty relay is widely used in homes, offices, shops, industries, and commercial power systems where stable and automatic power shifting is required without manual intervention.
With a high load capacity of 120A, this relay is suitable for heavy appliances including AC units, motors, refrigerators, compressors, UPS systems, and entire home power setups. Its fast response time and durable construction ensure smooth and safe switching, preventing voltage drops, sparks, or electrical damage. Equipped with strong internal contacts and a long-life electromagnetic mechanism, this relay guarantees stable performance for years.
Below are the main highlights of this product:
MAIN FEATURES & HIGHLIGHTS
✅ Automatic Power Transfer Function:
Automatically shifts your power connection from main supply to generator and back to main supply without delay. No manual switching required.
✅ High Current Capacity – 120A:
Supports heavy load appliances, full-home wiring, commercial shops, small industries, and backup systems.
✅ Safe AC 220V Operation:
Designed for Pakistan’s standard 220V supply, providing stable performance even in fluctuating voltage environments.
✅ Fast Switching Response:
Instant auto-transfer ensures your devices do not shut down suddenly, preventing data loss on electronics and damage to motors.
✅ Silent & Smooth Operation:
Advanced internal components provide smooth transition without loud clicks or spark sounds.
✅ Durable Copper Contacts:
Premium-grade copper parts ensure minimal heat generation, longer lifespan, and maximum conductivity.
✅ Long-Life Electromagnetic Coil:
Designed for continuous operation with high tolerance against voltage variations.
✅ Compatible with All Generators:
Works with petrol, gas, diesel generators, UPS, solar inverters, and hybrid systems.
✅ Overload & Overheat Resistant:
Built to handle heavy loads without overheating or causing safety hazards.
WHERE IT IS USED
The Automatic Changeover Relay is perfect for:
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Homes & apartments
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Commercial shops
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Offices & workplaces
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Industrial machines
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UPS & inverter systems
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Generator-based backup setups
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Solar + WAPDA hybrid configurations
It ensures uninterrupted power, making it essential in areas with frequent load shedding.
BENEFITS OF USING THIS CHANGEOVER RELAY
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Saves time and effort
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Protects appliances from damage
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Ensures smooth transition
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Reduces voltage spikes
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Minimizes generator overload issues
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Works silently and efficiently
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Extremely durable and long-lasting
WHY CHOOSE THIS 120A MODEL?
The 120A capacity is ideal for medium to heavy loads. If you use ACs, motors, refrigerators, full house wiring, or run multiple appliances on generator backup, this relay ensures safe and stable performance without burning or overheating.
With its strong mechanical design and advanced electrical components, it is one of the most reliable choices for automatic power shifting systems.
CONCLUSION
The Automatic Changeover Relay 120A AC 220V is a powerful, reliable, and long-lasting solution for automatic generator-to-main supply switching. It provides high safety, fast switching, stable performance, and protection for your appliances. Whether for home or commercial use, this relay is one of the best and most dependable options available in the market.
A must-have product for areas with load shedding, ensuring uninterrupted electricity and peace of mind. ⚡🔄









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