ATS Panel
Subtech ATS panels transfer critical loads between power sources in under 2 seconds. Deployed at DMRC, NTPC, Delhi Jal Board, Indian Air Force, and 200+ facilities across India.
What is an ATS Panel?
An ATS panel monitors your primary power source continuously. The moment it detects voltage deviation, phase loss, or frequency drift, it transfers your entire load to the secondary source with full mechanical and electrical interlocks that make it physically impossible for both sources to energise simultaneously.
ATS and AMF are not the same product. An AMF starts and stops a generator. An ATS assumes both sources are independently live and decides which one feeds the load. For facilities with two utility feeders or a permanently running backup generator, ATS is the correct specification.
DMRC mandates automatic transfer switches with dual power supplies across all station infrastructure. Subtech panels meet IEC 61439 type-tested requirements and IP54 enclosure standards specified in DMRC electrical panel documentation.
Why this matters for your facility
Transfer in Under 2 Seconds
Motorised changeover completes in 1 to 2 seconds. Static thyristor versions transfer in 20 milliseconds. No gap your UPS cannot hold.
Mechanically Impossible to Parallel Sources
Physical interlocks prevent both sources from energising the busbar simultaneously. Not a software lock. A mechanical one.
Monitors Both Sources Before Transferring
Checks under-voltage, over-voltage, phase loss, phase sequence, and frequency on both sources. The panel does not transfer to a bad source.
Transfer Logic Built for Your Site
Transfer delay, retransfer delay, inhibit timers, and load-shed logic are all programmable. Your site conditions, not a fixed factory default.
Bypass Isolation for Live Maintenance
Optional bypass section allows ATS removal for maintenance without interrupting the load. No maintenance window needed.
BMS and SCADA Ready
Modbus, BACnet, and Ethernet-IP standard. Live status, alarm logs, and remote test over your building management system.
Where Subtech panels are deployed
Data Centres
Dual utility feed ATS panels sit upstream of UPS and DG layers. Our panels transfer fast enough that UPS systems never switch to battery.
Hospitals with Class A Supply
Two independent DISCOM feeders. ATS keeps theatres and ICUs on utility power throughout. DG only invoked when both feeders fail.
Telecom MSC and NOC Sites
N+1 power redundancy between two utility feeders. A switching centre that goes dark takes hours to recover.
Water Treatment Plants
UP Jal Nigam, Delhi Jal Board, and MIDC pumping stations. Water supply to thousands of homes depends on these panels switching correctly every time.
Commercial Towers and IT Parks
Twin DISCOM feeders. Tenants stay powered during single-feeder maintenance. No SLA breaches. No complaints.
Metro Stations and Airports
DMRC specifies automatic transfer switches across all station building services. Subtech panels meet DMRC IEC 61439 and IP54 enclosure requirements.
ATS Panel Configurations
Four topologies. Pick what fits your transfer speed, maintenance requirement, and budget.
Motorised Changeover ATS
Two MCCBs or ACBs with motorised mechanism and mechanical interlock. Transfer in 1 to 2 seconds. Most specified configuration. Cost-effective and field-proven.
Get quoteElectrically Operated Contactor ATS
Two contactors with electrical and mechanical interlocks. Transfer under 500 milliseconds. For smaller loads where motorised ACBs are over-specified.
Get quoteBypass Isolated ATS
Parallel bypass section for live ATS removal during maintenance without load interruption. Standard for data centres and hospitals.
Get quoteStatic Solid State Transfer Switch
Thyristor switching in 20 milliseconds. One power cycle. Required upstream of large UPS plants and sensitive medical or laboratory loads.
Get quoteWhat Backs Every Panel We Ship
Branded Components Only
ACBs, MCCBs, and contactors from Schneider, Siemens, ABB, and L&T. Named in the BOM. Traceable.
CPRI Type-Tested
Short-circuit and temperature-rise tested at CPRI per IS 8623 and IEC 61439-1.
Custom Transfer Logic
Transfer delays, retransfer logic, and load priority configurable from the front panel.
Government Approved
Supplied to Indian Railways, DMRC, NTPC, and Indian Air Force.
Complete Documentation on Delivery
SLD, BOM, wiring schematic, GA drawing, and CPRI test certificate with every panel.
Service Across India
220+ partners. 24-hour response in metro cities. 12-month warranty extendable to 24 months.
Frequently asked questions
What is the difference between an ATS and an AMF panel?
What is the typical transfer time of an ATS panel?
Can the ATS panel parallel two sources?
Do you supply ATS panels for solar / inverter switching?
What enclosure ratings are available?
What is the lead time for an ATS panel?
Ready to spec your automatic transfer switch?
Share your single-line diagram, load list or three months of electricity bills. Our engineers will respond with a custom BOM, quote and delivery schedule within 24 hours.