Automatic Transfer Switch (ATS)

Q: What is a Automatic Transfer Switch

An Automatic Transfer Switch (ATS) is an electrical device that automatically switches a load between two power sources, typically the utility (main) power and a backup power source (such as a standby generator, UPS, or solar power system), to ensure continuous and reliable electricity supply.

Q: What is the Function of Automatic Transfer Switch

Automatic Power Switching – Detects power loss or abnormal conditions in the main supply and automatically switches the load to a backup source, then restores it when utility power is stable. Power Source Monitoring – Continuously monitors voltage, frequency, and phase to ensure safe and proper switching. Safety Protection – Prevents backfeeding and protects electrical systems from surges, spikes, or faults. Manual Override – Allows operators to manually control switching for testing or maintenance.

Q: How does Automatic Transfer Switch Work

An Automatic Transfer Switch (ATS) works by continuously monitoring the utility (main) power and automatically transferring the electrical load to a backup power source, such as a generator or UPS, when a power outage or abnormal condition occurs. Once the utility power is restored and stable, the ATS switches the load back to the main power.

Q: Types of Automatic Transfer Switches

Open Transition (Break-Before-Make) ATS : An Open Transition ATS disconnects the load from the main utility before connecting to the backup generator. Closed Transition (Make-Before-Break) ATS : A Closed Transition ATS briefly parallels the utility and generator before transferring the load, ensuring continuous power supply. Delayed Transition ATS : A Delayed Transition ATS introduces a programmable delay before switching to the backup power source. Soft Load / Bypass Isolation ATS : A Soft Load or Bypass Isolation ATS allows maintenance or load switching without interrupting the electrical supply. Closed-Coupled ATS : A Closed-Coupled ATS integrates directly with the generator control panel, providing a compact installation and reducing wiring complexity. Manual-Operated ATS : A Manual-Operated ATS requires human intervention to switch between utility and backup power.

Automatic Transfer Switch (ATS) series

LSP‘s Automatic Transfer Switch (ATS) is a PC-Class, infrequent change-over switch featuring a dual power supply design: power supply (I) as the main power and power supply (II) as the standby power. These Automatic Transfer Switch (ATS) designed for residential, commercial, industrial applications.

It supports dual power inputs from a main and a backup source. In the event of a main power failure or abnormality, the device automatically transfers to the backup power within 100 milliseconds, ensuring continuous and reliable power supply. It is suitable for low-voltage AC systems rated from 10A to 630A at 50/60Hz, features DIN rail mounting, and complies with IEC 60947-6-1:2021 standards.

Automatic Transfer Switch ATS L2R32-220/2

Automatic Transfer Switch ATS L2R32-220/2 is a single phase ATS with a rated operational current of 32A,...

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Automatic Transfer Switch ATS L2H63-220/2

The Automatic Transfer Switch L2H63-220/2 features dual power design, 20ms transfer speed, 63A capacity,...

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Automatic Transfer Switch ATS M2R100-220/4

Automatic Transfer Switch M2R100-220/4 is a three-phase, 4 pole, PC-class ATS with a rated current of...

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Automatic Transfer Switch ATS N2M125-220/4

Automatic Transfer Switch ATS N2M125-220/4 is PC-Class change-over switch, Supports AC systems with a...

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Automatic Transfer Switch ATS S3M250-220/4

Automatic Transfer Switch ATS S3M250-220/4 Supports AC systems with a rated current of 160A to 250A.

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Automatic Transfer Switch ATS G3M250-220/4

Automatic Transfer Switch ATS G3M250-220/4 is 3 phase, PC-Class change-over switch, Supports AC systems...

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Comprehensive Automatic Transfer Switch Power Transfer Solutions

ATS enables seamless switching between primary and backup power, ensuring continuous, reliable operation of hospitals, data centers, and industrial facilities.

Data Center

Automatic Transfer Switch can switch power from the primary source to a backup source, ensuring servers and other equipment remain operational and preventing data loss or service interruptions.

Hospital

When the main power fails, the automatic transfer switch can automatically switch to the backup power source, ensuring patient safety and the normal operation of medical equipment.

Commercial Buildings

During a power outage, the automatic transfer switch automatically switches to backup power, keeping elevators, lighting, and security systems running.

3 Phase Surge Protector SPD Application i Industrial Plant

Industrial Production Lines

Automatic transfer switch can quickly switch to backup power during an outage, preventing production line downtime and associated losses.

Solution surge protection device for Radiocommunication

Telecommunications Stations

Automatic transfer switch ensures reliable power switching, keeping communication services online even during grid failures.

High-Reliability Automatic Transfer Switch (ATS) by LSP Ensures Continuous Power for Critical Loads

LSP’s Autmatic Transfer Switch (ATS) helps enterprises minimize downtime, protect valuable assets, and ensure continuous business operations.

Compact Home ATS for Reliable Power

The Automatic Transfer Switch (ATS) L2R32 Series features a compact design that fits easily into PZ30 home distribution boxes, supporting automatic / manual switching, saving space and ensuring safe, stable home power.

High-Strength Flame-Retardant Enclosure

The Automatic Transfer Switch (ATS) enclosure is made of high-strength ABS/PC flame-retardant materials, offering excellent heat resistance and fire protection while preventing damage to internal electrical components.

Silver-Plated Anti-Oxidation Contacts

Automatic Transfer Switch (ATS) contacts are silver-plated and treated against oxidation, ensuring stable conductivity and longer service life. Even under frequent switching or harsh environments like high temperature and humidity, they guarantee continuous power to critical equipment, reduce maintenance costs, and enhance overall system reliability.

Automatic & Manual Dual Mode Switching

The Automatic Transfer Switch (ATS) supports both automatic and manual modes: in automatic mode, it ensures continuous power to critical loads, while manual mode allows operators to control switching flexibly according to actual needs.

Precision, Wear-Resistant Mechanical Design

Automatic Transfer Switch (ATS) contacts and mechanical components use high-strength, wear-resistant materials, ensuring precise switching, extended service life, and lower maintenance costs.

Why Choose LSP: Professional ATS Manufacturer You Can Trust

LSP has earned a strong reputation for delivering high-quality, reliable, and safe Automatic Transfer Switch solutions. With years of experience in design, production, and testing, we give customers confidence, ensuring that their critical loads are protected and power supply remains uninterrupted.

Professional Manufacturer

LSP, a leading Automatic Transfer Switch manufacturer, is dedicated to designing and producing reliable ATS.

Global Experience

LSP has years of international project experience, complying with diverse standards across countries and industries.

Strict Quality Control

LSP ensures that every Automatic Transfer Switch undergoes strict quality inspection, delivering stable performance and reliable safety.

Fast Delivery

LSP relies on efficient production and streamlined logistics to ensure every Automatic Transfer Switch is delivered to customers on time.

Technical Support

LSP provides professional ATS support, assisting with installation, troubleshooting, and maintenance to ensure reliable operation.

OEM / Customization

LSP provides OEM and customized solutions for Automatic Transfer Switches, offering tailored designs to meet customer and project requirements.

Got Questions Automatic Transfer Switch (ATS)

What is a Automatic Transfer Switch

An Automatic Transfer Switch (ATS) is an electrical device that automatically switches a load between two power sources, typically the utility (main) power and a backup power source (such as a standby generator, UPS, or solar power system), to ensure continuous and reliable electricity supply.

What is the Function of Automatic Transfer Switch

Automatic Power Switching – Detects power loss or abnormal conditions in the main supply and automatically switches the load to a backup source, then restores it when utility power is stable.
Power Source Monitoring – Continuously monitors voltage, frequency, and phase to ensure safe and proper switching.
Safety Protection – Prevents backfeeding and protects electrical systems from surges, spikes, or faults.
Manual Override – Allows operators to manually control switching for testing or maintenance.

How does Automatic Transfer Switch Work

An Automatic Transfer Switch (ATS) works by continuously monitoring the utility (main) power and automatically transferring the electrical load to a backup power source, such as a generator or UPS, when a power outage or abnormal condition occurs. Once the utility power is restored and stable, the ATS switches the load back to the main power.

Types of Automatic Transfer Switches

Open Transition (Break-Before-Make) ATS: An Open Transition ATS disconnects the load from the main utility before connecting to the backup generator.
Closed Transition (Make-Before-Break) ATS: A Closed Transition ATS briefly parallels the utility and generator before transferring the load, ensuring continuous power supply.
Delayed Transition ATS: A Delayed Transition ATS introduces a programmable delay before switching to the backup power source.
Soft Load / Bypass Isolation ATS: A Soft Load or Bypass Isolation ATS allows maintenance or load switching without interrupting the electrical supply.
Closed-Coupled ATS: A Closed-Coupled ATS integrates directly with the generator control panel, providing a compact installation and reducing wiring complexity.
Manual-Operated ATS: A Manual-Operated ATS requires human intervention to switch between utility and backup power.

Automatic Transfer Switch (ATS)

Automatic Transfer Switch (ATS) series

Comprehensive Automatic Transfer Switch Power Transfer Solutions

Data Center

Hospital

Commercial Buildings

Industrial Production Lines

Telecommunications Stations

High-Reliability Automatic Transfer Switch (ATS) by LSP Ensures Continuous Power for Critical Loads

Why Choose LSP: Professional ATS Manufacturer You Can Trust

Got Questions Automatic Transfer Switch (ATS)

What is a Automatic Transfer Switch

What is the Function of Automatic Transfer Switch

How does Automatic Transfer Switch Work

Types of Automatic Transfer Switches

Ensure Business Continuity, Safeguard Your Equipment

Products

Solutions

Services

About Us

Contact details

Get A Quote Now

Automatic Transfer Switch (ATS)

Automatic Transfer Switch (ATS) series

Comprehensive Automatic Transfer Switch Power Transfer Solutions

Data Center

Hospital

Commercial Buildings

Industrial Production Lines

Telecommunications Stations

High-Reliability Automatic Transfer Switch (ATS) by LSP Ensures Continuous Power for Critical Loads

Why Choose LSP: Professional ATS Manufacturer You Can Trust

Got Questions​ Automatic Transfer Switch (ATS)

What is a Automatic Transfer Switch

What is the Function of Automatic Transfer Switch

How does Automatic Transfer Switch Work

Types of Automatic Transfer Switches

Ensure Business Continuity, Safeguard Your Equipment

Products

Solutions

Services

About Us

Contact details

Get A Quote Now

Got Questions Automatic Transfer Switch (ATS)