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Un interruptor de transferencia automática, o ATS, cambia una carga entre dos fuentes de energía.
Cuando falla la energía principal, el ATS transfiere la carga a la energía de respaldo.
La fuente de respaldo puede ser un generador, un inversor, un sistema de respaldo solar u otra fuente de AC.
Cuando la energía principal regresa y se estabiliza, el ATS vuelve a transferir la carga.
Para el LEEYEE ATS-63, el tiempo de conmutación es de menos de 50 ms.
Este es el tiempo de conmutación del ATS solamente. Un generador puede necesitar tiempo adicional para arrancar y estabilizarse.
Principales Conclusiones
- Un ATS cambia una carga entre energía normal y energía de respaldo.
- Un ATS de 2P se utiliza comúnmente para sistemas monofásicos.
- Un ATS de 4P se utiliza comúnmente para sistemas trifásicos.
- Elija el ATS por corriente, voltaje, número de polos y fuente de respaldo.
- Un ATS no es un SAI. No almacena energía.
- Un ATS no reemplaza interruptores, fusibles, SPD o conexiones a tierra.
- El LEEYEE ATS-63 está disponible en opciones de 2P / 4P y de 6A a 63A.
¿Qué es un Interruptor de Transferencia Automática?
Un interruptor de transferencia automática es un dispositivo para sistemas de energía de respaldo.
Conecta la carga a una fuente de energía a la vez. Generalmente, una fuente es energía normal. La otra fuente es energía de respaldo.
La energía normal puede ser energía de la red eléctrica. La energía de respaldo puede ser un generador, un inversor, un sistema de respaldo solar u otra fuente de AC.
El ATS supervisa las fuentes de energía. Si falla la energía normal, el ATS transfiere la carga a la energía de respaldo cuando la fuente de respaldo está lista.
La idea clave es simple: un ATS no es solo un interruptor de encendido/apagado. Es un dispositivo de transferencia de fuente.
¿Qué Hace un Interruptor de Transferencia Automática?
Un ATS mantiene la carga conectada a la fuente de energía disponible.
En un sistema de respaldo simple, el ATS hace esto:
- Monitorea la energía normal.
- Detecta una falla de energía o un voltaje inestable.
- Verifica la fuente de respaldo.
- Transfiere la carga a la energía de respaldo.
- Transfiere la carga de vuelta cuando se restablece la energía normal.
Esto reduce el conmutador manual. También ayuda a mantener alimentadas las cargas importantes durante un corte.
¿Cómo Funciona un Interruptor de Transferencia Automática?
Un ATS monitorea dos fuentes de energía.
Una fuente es la fuente normal. La otra fuente es la fuente de respaldo.
Cuando la energía normal está disponible, la carga permanece en energía normal.
Cuando falla la energía normal, el ATS verifica la fuente de respaldo.
Si la fuente de respaldo está lista, el ATS transfiere la carga.
Un proceso típico de ATS se ve así:
- La energía de la red suministra la carga.
- La energía de la red falla o se vuelve inestable.
- El ATS detecta el problema.
- La fuente de respaldo se vuelve disponible.
- El ATS transfiere la carga a la energía de respaldo.
- La energía de la red regresa.
- El ATS transfiere la carga de vuelta a la energía de la red.
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El LEEYEE ATS-63 tiene un tiempo de conmutación de transferencia de menos de 50 ms.
Esto no significa que todo el sistema de respaldo se recupere en 50 ms.
Si la fuente de respaldo es un generador, el generador aún necesita tiempo para arrancar y estabilizarse.
Si la carga no puede aceptar ni siquiera un breve corte de energía, utilice un UPS u otro diseño de energía.
Ejemplo de Interruptor de Transferencia Automática
Piense en un pequeño edificio con energía de la red y un generador de respaldo.
En condiciones normales, el edificio funciona con energía de la red.
Cuando la energía de la red falla, el generador de respaldo se enciende. Cuando la fuente de respaldo está lista, el ATS transfiere la carga.
Cuando la energía de la red regresa y se vuelve estable, el ATS transfiere la carga de vuelta.
La misma idea también se puede utilizar con sistemas de respaldo de inversores solares, tableros de distribución, paneles de bombas y pequeños armarios de control.
Interruptor de Transferencia Manual vs Interruptor de Transferencia Automática
Un interruptor de transferencia manual necesita una persona para operarlo.
Un interruptor de transferencia automática realiza el cambio por sí mismo.
| Tipo | Cómo Funciona | Uso Típico |
|---|---|---|
| Interruptor de transferencia manual | Conmutado a mano | Sistemas simples donde el conmutador manual es aceptable |
| Interruptor de transferencia no automático | Operado eléctricamente, pero controlado manualmente | Sistemas que necesitan operación alimentada pero no automatización completa |
| Interruptor de transferencia automática | Conmutadores que automáticamente basan en el estado de la fuente | Sistemas de respaldo que necesitan transferencia de energía automática |
Tipos Principales de Aplicación de ATS
Un ATS se puede utilizar en diferentes configuraciones de fuente. La elección correcta depende del sistema de energía.
De la red al generador
Este es uno de los usos más comunes del ATS.
La energía normal es la energía de la red. La energía de respaldo es un generador.
Cuando falla la energía de la red, el ATS transfiere la carga a la energía del generador. Cuando la energía de la red regresa, transfiere la carga de vuelta.
De la red a la red
En esta configuración, ambas fuentes son suministros de utilidad.
Si una fuente falla, el ATS transfiere la carga a la segunda fuente.
Utilidad a inversor o respaldo solar
Algunos sistemas de respaldo solar o de batería utilizan un ATS para alternar entre la energía de la red y la salida del inversor.
Verifique el voltaje del inversor, la frecuencia, el método de conexión a tierra, el cableado neutro y el código local antes de la selección.
ATS de Transición Abierta vs ATS de Transición Cerrada
Los interruptores de transferencia a menudo se describen como de transición abierta o de transición cerrada.
ATS de transición abierta
La transición abierta significa romper antes de hacer.
El ATS se desconecta de una fuente antes de conectarse a la otra fuente.
Esto es común en sistemas generales de energía de respaldo. Puede ocurrir una breve interrupción durante la transferencia.
Closed Transition ATS
Closed transition means make-before-break.
It briefly connects two synchronized sources before disconnecting from the first source.
This is a more complex system. It is usually used in larger engineered power systems.
Important Note for Compact ATS Products
Do not assume every ATS supports closed transition.
Compact DIN-rail ATS products are mainly used for general backup source switching.
If your project needs zero interruption or source synchronization, use a different engineered power solution.
Interruptor de Transferencia Automática 2P vs 4P
Pole number is one of the most important ATS selection points.
Do not choose only by current rating. A 63A ATS may still be wrong if the pole number does not match the wiring.
What Is a 2P ATS?
A 2P ATS has two switching poles.
It is commonly used for single-phase systems where Line and Neutral need to be switched.
Typical 2P ATS applications include:
- Home backup systems
- Small shops
- Small offices
- Single-phase generator backup
- Single-phase inverter backup
- Cuadros de distribución residenciales
What Is a 4P ATS?
A 4P ATS has four switching poles.
It is commonly used for three-phase systems where L1, L2, L3, and Neutral need to be switched.
Typical 4P ATS applications include:
- Three-phase commercial systems
- Small factories
- Armarios de control
- Three-phase generator backup
- Pump control panels
- Distribution boards that require neutral switching
2P vs 4P ATS Selection Table
| Tipo de sistema | Common ATS Choice | Notes |
|---|---|---|
| Single-phase AC system | 2P ATS | Common for homes, shops, and small offices |
| Single-phase generator backup | 2P ATS | Used for L + N switching |
| Three-phase AC system | 4P ATS | Used for L1 + L2 + L3 + N switching |
| Three-phase generator backup | 4P ATS | Common in control cabinets and distribution systems |
| Inverter backup system | 2P or 4P | Depends on inverter output and wiring design |
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Simple rule: use 2P for many single-phase systems. Use 4P for many three-phase systems.
Final selection should always follow the actual wiring design.
Cómo Elegir el Interruptor de Transferencia Automática Correcto
Start with the power system. Then choose the ATS.
1. Confirm the Phase Type
Is the system single-phase or three-phase?
Many single-phase systems use 2P. Many three-phase systems use 4P.
2. Confirm the Load Current
The ATS current rating must match or exceed the load current.
LEEYEE ATS-63 is available in 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, and 63A.
For motors, pumps, and compressors, also check starting current.
3. Confirm the System Voltage
The ATS voltage rating must match the system voltage.
LEEYEE ATS-63 supports AC110V, AC220V, AC400V, and 50/60Hz configurations.
4. Confirm the Backup Source
The backup source may be a generator, inverter, solar backup system, utility backup, or another AC source.
For inverter and solar systems, check neutral wiring, grounding, and local code.
5. Confirm the Transfer Switching Time
Transfer switching time tells you how fast the ATS changes from one source to another.
LEEYEE ATS-63 transfer switching time is less than 50 ms.
This is not the same as total backup recovery time. A generator may need extra time to start.
6. Confirm Manual and Automatic Operation
Compact ATS products often support both manual and automatic operation.
Manual operation is useful for testing and maintenance. Automatic operation is used for normal backup switching.
7. Confirm Installation Conditions
Check DIN-rail space, wiring space, terminal access, heat dissipation, cabinet layout, and installation environment.
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Especificaciones Clave a Verificar Antes de Comprar un ATS
| Especificación | What to Confirm |
|---|---|
| Tensión nominal | Must match the system voltage |
| Corriente nominal | Must match or exceed the load current |
| Pole configuration | Choose 2P or 4P by phase type and wiring method |
| Frequency | Check 50Hz or 60Hz |
| Transfer switching time | LEEYEE ATS-63 transfer switching time is <50 ms |
| Backup source | Generator, inverter, solar backup, utility backup, or other AC source |
| Protection design | Use proper breakers, fuses, SPDs, grounding, and cable sizing |
| Wiring diagram | Must match the actual system design |
A reliable supplier should provide technical data, dimensions, wiring diagrams, and selection support.
Normas y Cumplimiento
Buyers often ask for CE and RoHS documentation for compact ATS products.
CE relates to applicable European conformity requirements for the declared product category.
RoHS relates to restricted hazardous substances in electrical and electronic equipment.
LEEYEE automatic transfer switches can be supplied with CE and RoHS documentation.
Project requirements can vary by country. For regulated installations, confirm local standards before ordering.
ATS vs MTS vs UPS
ATS, MTS, and UPS devices do different jobs.
| Dispositivo | Full Name | Main Function |
|---|---|---|
| ATS | Interruptor de Transferencia Automático | Automatically switches the load between two power sources |
| MTS | Manual Transfer Switch | Switches the load by manual operation |
| UPS | Uninterruptible Power Supply | Provides temporary battery power during an interruption |
An ATS does not store energy. It only transfers the load.
A UPS stores energy in batteries. Some systems use an ATS and a UPS together.
¿Proporciona un ATS Protección contra Sobrecarga o Cortocircuito?
No.
An ATS transfers the load between power sources. It does not replace circuit protection devices.
A complete system should include the right breakers, fuses, surge protection, grounding, and cable sizing.
Aplicaciones Comunes de Interruptores de Transferencia Automática
Home Backup Power
An ATS can switch selected home circuits from utility power to generator or inverter backup.
Typical loads include lighting, refrigerators, routers, water pumps, and security systems.
Small Shops and Offices
Small commercial users may need backup power for lighting, cash registers, communication devices, refrigeration, or security systems.
Generator Backup Systems
The ATS transfers the load to generator power when utility power fails.
It transfers the load back when utility power returns.
Solar and Inverter Backup Systems
Algunos sistemas de respaldo solar o de batería utilizan un ATS para alternar entre la energía de la red y la salida del inversor.
Always check inverter output, neutral wiring, grounding, load type, and local code.
Pump Control Systems
Pumps may need backup power in irrigation, drainage, and control cabinet systems.
For pump loads, check running current and starting current.
Telecom Cabinets
Compact ATS products can be used in telecom cabinets and remote equipment rooms.
Control Cabinets and Distribution Boards
An ATS can support auxiliary circuits, monitoring systems, fans, small motors, and backup circuits.
Interruptor de Transferencia Automática LEEYEE ATS-63
LEEYEE provides the ATS-63 series for compact backup power systems.
It is suitable for generator backup, solar inverter backup, small distribution systems, and control cabinets.
ATS-63 is a compact DIN-rail automatic transfer switch. It switches between power A and power B in AC systems.
It is available in 2P and 4P versions for single-phase and three-phase applications.
For full technical data, wiring details, and dimensions, view the ATS-63 product page or contact LEEYEE for selection support.
Cuándo el ATS-63 Es una Buena Opción
ATS-63 is a good fit for compact AC backup systems.
Typical uses include home backup, generator backup, and solar inverter backup.
It can also be used in small shops, light commercial distribution, control panels, and telecom cabinets.
Use it only when the current, voltage, pole number, wiring method, and transfer requirements match the system.
Cuándo el ATS-63 Puede No Ser la Opción Correcta
ATS-63 is not a large power transfer system.
ATS-63 is not suitable for every system.
It is not intended for systems above 63A, data centers, hospitals, zero-interruption loads, or closed transition systems.
It also does not provide overload protection by itself.
For those projects, use a larger engineered transfer solution.
Errores Comunes al Elegir un ATS
Choosing Only by Current Rating
“I need a 63A ATS” is not enough.
You also need voltage, phase type, pole number, backup source, wiring method, and transfer time.
Using 2P ATS in a Three-Phase System
A 2P ATS is not suitable for a standard three-phase system that needs four-pole switching.
Ignoring Neutral Switching
Neutral switching depends on the grounding system, generator design, inverter wiring, and local code.
Undersizing the ATS
The ATS should not operate above its rated current.
For motors and pumps, also check starting current.
Treating ATS as a UPS
An ATS does not provide battery backup.
If the load cannot accept a short power break, use a UPS.
Forgetting Protection Devices
An ATS does not replace breakers, fuses, or surge protection.
¿Cuándo Debes Usar un Interruptor de Transferencia Automática?
Use an ATS when a load needs to switch automatically to backup power after the main supply fails.
An ATS is suitable when two AC power sources are available and manual switching is too slow or inconvenient.
It may not be enough for zero-interruption loads, unstable backup sources, unclear wiring systems, or oversized loads.
For sensitive electronics, use an ATS together with a UPS if needed.
Preguntas Frecuentes sobre Interruptores de Transferencia Automática
What is the purpose of an automatic transfer switch?
It transfers the load from normal power to backup power when normal power fails.
What is an automatic transfer switch used for?
It is used for backup power switching in homes, small buildings, generator systems, and solar inverter backup systems.
It can also be used in control panels, distribution boards, and telecom cabinets.
How does an automatic transfer switch work?
It monitors the normal source and backup source.
When normal power fails and backup power is ready, the ATS transfers the load.
What happens when utility power comes back?
The ATS transfers the load back to utility power after the source becomes stable.
Can an ATS work without a generator?
Yes. It can switch between grid power and inverter power, solar backup, two utility sources, or other AC sources.
Is an ATS required for a generator?
Not always.
But an ATS is useful when automatic generator backup transfer is needed.
Can an ATS switch between grid and solar inverter?
Yes, in some systems.
Check inverter output, voltage, frequency, neutral wiring, grounding, and local code first.
How fast does an ATS switch?
Switching time depends on the ATS design and source condition.
LEEYEE ATS-63 transfer switching time is less than 50 ms.
What is the transfer switching time of LEEYEE ATS-63?
It is less than 50 ms according to the product manual.
This is the ATS switching time only. Generator start-up time is separate.
What is the difference between ATS and UPS?
An ATS transfers the load between two power sources.
A UPS provides battery power during an interruption.
What is the difference between 2P and 4P ATS?
Un ATS de 2P se utiliza comúnmente para sistemas monofásicos.
A 4P ATS is commonly used for three-phase systems that switch L1, L2, L3, and Neutral.
Can a 2P ATS be used for a three-phase system?
No.
A standard three-phase system needs three-phase or four-pole switching.
What size automatic transfer switch do I need?
Choose by load current, voltage, pole number, source type, wiring method, and transfer requirement.
Can ATS-63 be used for home backup power?
Yes, when the voltage, current, pole number, and wiring method match the home backup system.
Can ATS-63 be used for generator backup?
Yes, if the system parameters and wiring design match the ATS rating.
Can ATS-63 be used for solar backup systems?
Yes, in some solar or inverter backup systems.
Check inverter output, voltage, frequency, neutral switching, and wiring method before selection.
What certifications are available for LEEYEE ATS?
LEEYEE automatic transfer switches can be supplied with CE and RoHS documentation.
Does an ATS provide surge protection?
No. Surge protection requires a separate surge protective device.
Does an ATS provide overload or short-circuit protection?
No. Use suitable circuit breakers, fuses, and other protection devices.
What should I confirm before buying an ATS?
Confirm voltage, current, pole number, and frequency.
Also check the source type, wiring method, transfer time, installation space, and certification needs.
¿Necesita ayuda para elegir un ATS?
Tell us your voltage, current, phase type, backup source, transfer requirement, and wiring details.
LEEYEE can help you select a suitable ATS-63 option.
Common uses include generator backup, solar inverter backup, distribution boards, and compact control cabinets.
Conclusión
An automatic transfer switch moves a load between normal power and backup power.
It is widely used in generator backup, solar inverter backup, and home backup.
It can also be used in small commercial systems, telecom cabinets, control panels, and distribution boards.
Before choosing an ATS, confirm the voltage, current, phase type, and pole number.
Then check the backup source, wiring method, transfer time, and installation conditions.
For compact backup systems, LEEYEE ATS-63 provides 2P and 4P DIN-rail options from 6A to 63A.
Its transfer switching time is less than 50 ms.
A well-selected ATS makes backup power switching easier, safer, and more reliable.
