Automatic Mains-DG Changeover Panels for Reliable Power Transfer
E-Tech Power is a manufacturer and supplier of Auto Changeover Panels, Automatic Transfer Switch (ATS) Panels and AMF-integrated changeover panels for industrial, commercial, institutional and infrastructure applications across Delhi NCR, Noida, Greater Noida, Ghaziabad, Faridabad and Gurugram.
Our automatic changeover panels are designed to transfer the electrical load between two available power sources, such as mains supply and DG set, with minimal interruption and without requiring manual intervention.
Depending on the application, the panel can be engineered using MCCB, ACB, contactors, motorized changeover switches, ATS systems, AMF controllers, PLC-based controls and other suitable switching and protection components.
Need an Auto Changeover Panel?
Share your:
- Load capacity / kVA
- Incoming voltage
- Number of phases
- Mains and DG details
- Required incomer/outgoer ratings
- Preferred component brands
- Application details
and our team can help you select a suitable panel configuration.
What Is an Auto Changeover Panel?
An Auto Changeover Panel is an electrical control and switching panel that automatically transfers a connected load from one power source to another when the preferred source becomes unavailable or falls outside the configured operating conditions.
A common application is:
Mains Supply → Load
When mains power fails:
Mains Failure → DG Starts / Available Backup Source → Automatic Transfer → Load
When the normal mains supply returns and remains stable:
Mains Restored → Automatic Re-transfer → Load Returns to Mains
The exact sequence depends on the system design, controller, switching equipment and the customer’s electrical requirements.
An auto changeover system is therefore useful wherever continuity of electrical supply is important and manual source switching is inconvenient or undesirable.
Auto Changeover Panel for Mains and DG
For facilities using a DG set as a standby source, the changeover panel can be integrated with an AMF (Auto Mains Failure) system.
A typical system consists of:
Utility / Mains Supply
↓
Auto Changeover / ATS Panel
↔
DG Set
↓
Electrical Load
The control system monitors the availability of the sources and operates the switching arrangement according to the configured sequence.
Where required, the panel can also be designed for generator start/stop control through an AMF controller.
Important:
An ATS/Auto Changeover function and an AMF function are related but not identical.
- Auto Changeover / ATS: transfers the load between available sources.
- AMF: detects mains failure and can initiate automatic DG starting, followed by transfer of the load when the generator supply is ready.
For a complete mains-to-DG automatic system, both functions may be integrated into one engineered solution.
Our Auto Changeover Panel Solutions
E-Tech Power can design and manufacture changeover panels according to the electrical load, source configuration and operating requirements of the installation.
1. Mains-DG Auto Changeover Panel
Designed for automatic transfer between utility power and DG supply.
2. ATS Panel
Automatic Transfer Switch panels for applications requiring automatic switching between two power sources.
3. AMF Panel with Auto Changeover
Suitable for DG-backed power systems where automatic mains failure detection, generator starting and load transfer are required.
4. MCCB-Based Changeover Panel
Designed using suitable MCCB-based switching and protection arrangements according to the system rating.
5. ACB-Based Changeover Panel
For higher-current applications where ACB-based switching is appropriate.
6. Contactor-Based Changeover Panel
Suitable for selected low- and medium-capacity applications where contactor-based source transfer is technically appropriate.
7. Motorized Changeover / ATS Solution
For applications requiring electrically operated automatic source transfer.
8. Customized Automatic Changeover Panel
Panel configuration can be engineered according to:
- Load requirement
- Source capacity
- Short-circuit level
- Incomer rating
- Number of outgoing feeders
- DG capacity
- Control philosophy
- Installation environment
- Required protection and indication
How an Auto Changeover Panel Works
A typical mains-DG automatic changeover sequence works as follows:
Step 1 — Mains Available
The system continuously monitors the normal mains supply.
Step 2 — Mains Failure Detected
If the mains supply fails or falls outside the configured operating limits, the controller detects the abnormal condition.
Step 3 — Backup Source Becomes Available
In a DG-based system, the AMF controller can initiate the DG starting sequence.
Step 4 — DG Stabilizes
The system waits for the generator voltage and frequency to reach the required operating conditions.
Step 5 — Load Transfer
The automatic switching system transfers the load from the mains source to the DG source.
Step 6 — Mains Returns
When the normal mains supply returns and remains stable for the configured period, the system can transfer the load back to mains.
Step 7 — DG Cool-Down / Stop
Where an AMF controller is used, the generator can complete its configured cool-down sequence before stopping.
The actual sequence, timers and protections should always be finalized according to the electrical system design and equipment manufacturer’s specifications.
Auto Changeover Panel Components
The components used in an automatic changeover panel depend on the required rating and control philosophy.
Typical components may include:
- MCCB
- ACB
- Contactor
- Motorized MCCB / ACB
- Automatic Transfer Switch
- AMF Controller
- PLC
- Auxiliary relays
- Control MCBs
- Timers
- Indication lamps
- Selector switches
- Push buttons
- Emergency stop
- Digital multifunction meter
- Voltage monitoring relay
- Current transformers
- Busbars
- Terminal blocks
- Control wiring
- Protection and interlocking arrangement
- Sheet-steel enclosure
Component selection should be based on the actual system rating and application rather than simply selecting components by load current.
Auto Changeover Panel Ratings
The required rating of an automatic changeover panel depends on the connected load, source capacity, prospective short-circuit current and electrical system design.
Common project requirements may include panels in different current ratings such as:
[Example: 63A | 100A | 160A | 250A | 400A | 630A | 800A | 1250A | 1600A | 2000A | 2500A | 3200A | 4000A+]
Replace this list with the actual ratings manufactured/supplied by E-Tech Power.
The correct panel rating should be selected after considering:
- Connected load
- Maximum demand
- Diversity
- Source capacity
- Cable size
- Breaker rating
- Short-circuit withstand requirements
- Future load expansion
- DG capacity
- Installation conditions
Applications of Auto Changeover Panels
Automatic changeover panels are commonly used where continuity of power supply is important.
Industrial Applications
- Manufacturing plants
- Production units
- Process industries
- Workshops
- Warehouses
- Industrial facilities
Commercial Applications
- Office buildings
- Shopping complexes
- Hotels
- Commercial buildings
- Retail facilities
- Business centres
Institutional Applications
- Schools
- Colleges
- Universities
- Government buildings
- Research facilities
Infrastructure Applications
- Data and communication facilities
- Utility installations
- Infrastructure projects
- Residential and commercial complexes
Critical Power Applications
Where backup power is required for essential electrical loads, the changeover system can be engineered according to the required source-transfer philosophy and protection requirements.
Why Choose E-Tech Power for Auto Changeover Panels?
Choosing a changeover panel is not only about selecting an MCCB or ATS with the correct current rating. The complete system needs to be engineered around the electrical source, load and operating sequence.
At E-Tech Power, our approach focuses on:
Application-Based Design
The panel configuration is selected according to the customer’s actual electrical requirement rather than using a one-size-fits-all design.
Customized Panel Configuration
Control logic, switching equipment, protection, indication and enclosure configuration can be customized according to the project requirement.
Quality Electrical Components
We can provide suitable components from established electrical brands as per project specification and customer requirement.
[ADD YOUR ACTUAL BRANDS HERE]
Testing Before Dispatch
Each completed panel should undergo appropriate inspection and testing before dispatch, including verification of wiring, operation, indications, interlocking and other applicable parameters.
[ADD YOUR ACTUAL TESTING PROCESS HERE]
Installation & Commissioning
Where offered, our team can support installation, testing and commissioning at the project site.
Auto Changeover Panel Manufacturer in Delhi NCR
E-Tech Power serves customers requiring automatic changeover and power-control panels across the Delhi NCR region.
Our service area includes:
- Delhi
- Noida
- Greater Noida
- Ghaziabad
- Faridabad
- Gurugram / Gurgaon
For projects outside Delhi NCR, availability can be confirmed with our team.
If you are looking for an Auto Changeover Panel Manufacturer in Delhi NCR, share your electrical load and source details with us for a suitable configuration and quotation.
Auto Changeover Panel Manufacturer in Noida
For industrial and commercial projects in Noida, we can provide customized automatic changeover solutions according to project requirements.
The panel can be configured for mains-DG applications and other dual-source power-transfer requirements.
Contact E-Tech Power for project-specific specifications and quotation.
Auto Changeover Panel Manufacturer in Greater Noida
Greater Noida has a large number of industrial, institutional, warehouse and commercial installations where reliable backup power is required.
Our automatic changeover solutions can be customized according to the site’s load requirement, source capacity and control philosophy.
Auto Changeover Panel Manufacturer in Ghaziabad
We provide customized electrical panel solutions for industrial and commercial applications in Ghaziabad and surrounding areas.
For a quotation, provide the required current rating, DG capacity, number of phases and preferred component specification.
Auto Changeover Panel Manufacturer in Gurgaon
For commercial buildings, offices, industrial facilities and other applications in Gurgaon/Gurugram, automatic changeover panels can be engineered for mains-DG and other backup power configurations.
Auto Changeover Panel Manufacturer in Faridabad
E-Tech Power can provide automatic changeover solutions for industrial and commercial applications in Faridabad according to project-specific electrical requirements.
Auto Changeover Panel vs Manual Changeover Panel
| Feature | Manual Changeover | Auto Changeover |
|---|---|---|
| Source transfer | Manual | Automatic |
| Operator required | Yes | Normally no |
| Mains failure response | Depends on operator | Automatic |
| DG integration | Possible | Common |
| AMF integration | Usually separate/manual | Can be integrated |
| Suitable for critical loads | Limited | Better suited |
| Convenience | Basic | High |
The appropriate solution depends on the application, load and required level of automation.
Auto Changeover vs ATS vs AMF
These terms are often used interchangeably, but they can refer to different functions.
Auto Changeover Panel
A panel/system designed to automatically switch the load between two sources.
ATS — Automatic Transfer Switch
A switching system specifically designed to automatically transfer electrical loads between designated power sources.
AMF — Auto Mains Failure
A control function that detects mains failure and, in DG applications, can initiate generator starting and coordinate the subsequent transfer process.
A complete DG backup system may therefore combine AMF + ATS/Auto Changeover functions.
How Much Does an Auto Changeover Panel Cost?
There is no single price for an automatic changeover panel because the cost depends on the design and components.
The quotation may vary based on:
- Current rating
- Voltage
- Number of phases
- MCCB / ACB / ATS selection
- DG capacity
- AMF controller
- PLC requirement
- Metering
- Protection requirements
- Enclosure size
- Busbar rating
- Component brand
- IP protection
- Installation requirements
- Testing and commissioning
For an accurate quotation, send your load rating, DG capacity and electrical specifications to our team.
How to Select the Right Auto Changeover Panel?
Before ordering an automatic changeover panel, the following information should be finalized:
1. Load Capacity
What is the connected and maximum demand load?
2. Supply Voltage
For example:
[415V, 3 Phase, 4 Wire]
3. Source Configuration
For example:
Mains + DG
or
Mains + Mains
or another dual-source configuration.
4. DG Capacity
Provide the generator rating in kVA.
5. Switching Equipment
The selection may include:
- MCCB
- ACB
- ATS
- Contactor
- Motorized breaker
6. Control Requirement
Specify whether AMF, PLC, remote monitoring or other control functions are required.
7. Installation Conditions
Indoor/outdoor installation, ambient conditions and required enclosure protection should be considered.
What Information Do We Need for a Quotation?
To prepare a technically suitable quotation, send us:
Required information:
- Load / current rating
- DG capacity in kVA
- Voltage
- Single phase / three phase
- Mains supply details
- Number of sources
- Required changeover method
- AMF requirement
- Preferred make/brand
- Indoor/outdoor installation
- Quantity
- Delivery location
If you already have a single-line diagram (SLD), load schedule or existing panel photograph, you can share it with our technical team.
Frequently Asked Questions
What is an Auto Changeover Panel?
An Auto Changeover Panel automatically transfers an electrical load between two power sources when the preferred source becomes unavailable or when the configured transfer conditions are met.
What is the difference between an ATS and an Auto Changeover Panel?
ATS stands for Automatic Transfer Switch. An auto changeover panel may incorporate an ATS or another suitable automatic switching arrangement along with protection, control, metering and other panel components.
Can an Auto Changeover Panel work with a DG?
Yes. A mains-DG automatic changeover system is a common application. Where required, the system can be integrated with an AMF controller for automatic generator starting and stopping.
Does AMF start the DG automatically?
In a properly configured DG control system, an AMF controller can detect mains failure and initiate the generator starting sequence. The exact functionality depends on the controller, DG control system and wiring configuration.
Can the panel be customized?
Yes, automatic changeover panels can be engineered according to the required current rating, source configuration, switching equipment, protection, metering and control requirements.
Which breaker is used in an Auto Changeover Panel?
Depending on the application, MCCB, ACB, motorized breakers, contactors or dedicated ATS equipment may be used. The correct selection depends on electrical and short-circuit requirements.
Can you provide an AMF and Auto Changeover panel together?
Yes, where required, AMF and automatic source-transfer functions can be integrated into a single DG backup power system.
What information is required to get a quotation?
You should provide the load/current rating, voltage, phase configuration, DG capacity, source details, required control functions and installation location. An SLD or existing panel photograph can also help with technical evaluation.
Where do you supply Auto Changeover Panels?
We serve projects in Delhi NCR, including Noida, Greater Noida, Ghaziabad, Faridabad and Gurugram, subject to project requirements and service availability.
Technical Disclaimer
Electrical panel selection, breaker ratings, short-circuit withstand capacity, cable sizing, protection settings and changeover logic should be finalized by a qualified electrical professional based on the actual installation, applicable standards and project requirements.
Product specifications and component availability may vary according to the project.