TOMZN Smart Changeover ATS Switch | 2P Single Phase (125A)

Description

Take Total Control of Your Backup Power — TOMZN Smart Changeover ATS Switch | 2P Single Phase

Living in Pakistan means building load-shedding management into your daily routine. You learn when your area’s schedule typically hits, you keep the generator fuelled, you run extension cables — and you keep someone available to flip the heavy manual changeover lever in the dark every time WAPDA goes down. It is loud, slow, and dangerous when done incorrectly. And the moment you leave home for a day — or fall asleep during a late-night cut — the manual process breaks down entirely.

The TOMZN Smart Changeover ATS Switch 2P, now available at eGalaxy.pk, replaces that manual lever entirely. A high-capacity, intelligent Automatic Transfer Switch (ATS) that continuously monitors your incoming power lines, switches your entire home’s electrical load between WAPDA and your backup source in milliseconds, and gives you full remote control, live status monitoring, and automated scheduling through the globally trusted eWeLink app — with no manual intervention and no dark-corridor sprints required.

Browse our full Smart ATS & Changeover category at eGalaxy.pk to compare this model with our full range of automatic transfer switch options for your distribution board.

How the TOMZN Smart Changeover ATS Switch | 2P Single Phase Works

At its core, every Automatic Transfer Switch does one job: it monitors a primary power source and, the moment that source fails, switches the connected load to a secondary backup — without waiting for a human to notice and react.

As Schneider Electric explains in its guide to transfer switches, an ATS continuously monitors the voltage and frequency of the primary supply and initiates a load transfer the instant conditions fall outside acceptable parameters — the same principle used in hospitals, data centres, and commercial buildings worldwide to guarantee continuous power without any gap. The TOMZN Smart Changeover ATS Switch 2P brings that same professional-grade logic to Pakistani homes and businesses, and adds WiFi connectivity and smartphone control on top.

In practice for Pakistani households:

The moment WAPDA supply drops — whether planned load-shedding or an unexpected fault — the TOMZN’s internal relay detects the voltage loss and automatically reroutes your home’s electrical circuits to your generator or solar inverter line. Your WiFi router stays connected. Your inverter AC keeps cooling. Your CCTV cameras keep recording without a gap. Your smart TVs don’t reset. Your online meetings don’t drop.

When grid power returns, the switch detects the incoming voltage, verifies its stability, and automatically transfers your load back to WAPDA — safely stepping off your generator to preserve fuel. You don’t have to watch for it. You don’t have to be home.

Why the 125A Capacity Is Critical for Large Pakistani Homes

A common and expensive mistake when selecting an ATS is undersizing the frame rating. Cheap 40A or 60A changeover switches are overwhelmed by the startup surge current of multiple inverter ACs running simultaneously — and when they fail under load, they fail dangerously.

The TOMZN Smart Changeover ATS Switch 2P carries a 125A continuous current rating — enough headroom to comfortably run a full heavy home load including inverter ACs, refrigerators, deep freezers, water pumps, and complete lighting circuits simultaneously without strain. For single-phase installations in large residential properties, this is the rating that eliminates the risk of overload failure.

For three-phase commercial properties or larger installations, pair TOMZN Smart Changeover ATS Switch 2P with our 100A 3 Phase WiFi Breaker for complete three-phase distribution board management — or browse our full WiFi Breaker range for individual circuit-level smart protection across your panel.

8kV Surge Protection — Built for Pakistan’s Grid Reality

Pakistan’s national grid is notorious for its voltage instability. Sudden spikes from transformer switching, neighbourhood generator feedback, and restoration surges when WAPDA returns can reach multiple times the normal line voltage in microseconds — more than enough to permanently damage standard smart switches and the appliances downstream.

The TOMZN Smart Changeover ATS Switch 2P is rated to withstand and absorb 8,000 volts of impulse surge — one of the highest surge resistance ratings available in consumer-grade ATS switches. Combined with high-conductivity copper internal contacts and flame-retardant housing material, this switch is built specifically for the kind of harsh grid conditions that are everyday reality across Lahore, Karachi, Islamabad, and every city in between.

eWeLink App — Remote Control, Scheduling, and Live Monitoring

What separates the TOMZN Smart Changeover ATS Switch 2P from a basic automatic transfer switch is its built-in WiFi connectivity running on the globally trusted eWeLink platform — the same smart home ecosystem powering millions of SONOFF-compatible devices worldwide.

Download the free eWeLink app from Google Play or the App Store, connect to your 2.4GHz WiFi network, and your TOMZN Smart Changeover ATS Switch 2P is live and remotely controllable in under 60 seconds.

What the eWeLink app gives you:

• Live power source status — see at a glance whether your home is currently drawing from WAPDA or running on your generator or solar inverter line, from anywhere
• Remote manual override — force a line switch remotely for maintenance, solar testing, or to manually cut generator power when nobody is home to do it physically
• Loop timer scheduling — program the switch to allow generator input only during specific hours; for example, 6 PM to 11 PM on load-shedding evenings — preventing fuel waste from a generator running at 3 AM when nobody needs it
• Smart scene automation — link the switch into broader eWeLink smart home routines for coordinated responses to power events
• Real-time alerts — receive push notifications the moment your power source changes, so you always know when WAPDA cuts and when it returns, even if you’re in another city

Auto / Manual Override and Built-In Safety Lock

Every reliable ATS needs a physical failsafe for maintenance and edge cases. The TOMZN Smart Changeover ATS Switch 2P has both:

Auto Mode — the switch monitors lines continuously and transfers automatically the moment a primary source drops. Normal operation for everyday load-shedding management.

Manual Mode — flip the physical lever on the front face to take direct control. Override automatic switching for scheduled maintenance, electrical work on your distribution board, or extended periods away from home when you want all automation paused.

Mechanical Safety Lock — prevents the TOMZN Smart Changeover ATS Switch 2P from ever connecting both power sources simultaneously. This hardware-level protection eliminates the risk of back-feeding your generator supply into the WAPDA street transformer — a potentially lethal scenario with serious consequences for both the equipment and the utility workers on the line outside your property.

Pair with Other Smart Distribution Board Devices at eGalaxy.pk

The TOMZN Smart Changeover ATS Switch 2P is your automatic line manager — the device that decides which source powers your home. For individual circuit-level monitoring, energy tracking, and overcurrent protection on the circuits downstream, pair it with:

• TOMZN Smart Changeover ATS Switch 2P — our Tuya-platform ATS option for households already running a Tuya or Smart Life smart home ecosystem
• 63A Smart WiFi Breaker — for energy monitoring, leakage protection, and remote circuit control on individual heavy appliance lines
• Smart 16A WiFi Power Plug — for individual appliance scheduling and energy monitoring at the socket level across your home

Who Needs the TOMZN Smart Changeover ATS Switch | 2P Single Phase in Pakistan?

Hybrid solar homeowners — automate the transition between solar inverter and WAPDA supply based on battery charge level and time of day, protecting your inverter from rough grid feedback.

Large family homes and villas — the 125A rating handles full heavy loads including multiple inverter ACs, water pumps, and a complete lighting circuit without any risk of overload.

Remote workers and freelancers — never lose an internet connection, drop an online meeting, or lose unsaved files because of a load-shedding cut again.

Commercial shops and office owners — keep security cameras, billing computers, routers, and fans live through every outage without any staff needing to manage a physical changeover.

eWeLink ecosystem users — if your existing smart home devices run on eWeLink or SONOFF, this ATS integrates directly into your existing app dashboard without adding a second platform.

The eGalaxy.pk Guarantee

Every product at eGalaxy.pk is backed by our 7-Day Replacement Policy, Cash on Delivery option, and nationwide delivery across Pakistan. Based in Lahore, we serve customers from Karachi to Peshawar with genuine, quality-tested smart home and power management products at honest, transparent prices.

The TOMZN Smart Changeover ATS Switch 2P is a one-time, permanent upgrade to your distribution board — delivering automated power source switching, industrial-grade surge protection, and live remote control that completely eliminates the need for manual intervention every time load-shedding hits.