Modular automatic backup power transfer switch for generators | solar | photovoltaic systems | 4P | 125A | 400V | DIN
Code: ESTXATS-125PV/4PThe 4-pole automatic transfer switch (ATS) is specifically designed for use in photovoltaic (solar) systems and inverter infrastructures, where fast, reliable, and uninterrupted switching between solar/inverter and the grid is required.
It is an ideal solution both for home users seeking seamless backup power supply and for engineers and installers looking for a reliable component in DC-AC switching circuits.-
Technical Specifications
Switching type: Automatic + manual
Number of poles: 4P (L1, L2, L3, N)
Rated current: 125A
Rated voltage: 400V AC, L+N, 50/60Hz
Insulation voltage: Up to 690V
Mounting: DIN rail (35 mm)
Switching speed: <8 ms
Switching level: PC level (used in power circuits)Functions and Usage
Dual power automatic switching: Enables seamless transition between inverter (PV) and utility grid depending on power availability.
Power failure protection: Safely maintains continuous supply even during inverter voltage fluctuations (only when source B is ON!).
Modular design: Easy installation in electrical panels.
Manual control: Can be used as a manual selector switch if the automatic mode is disabled.
Compatibility: Suitable for photovoltaic inverters where PV is the primary source and the grid is backup.
Advantages
Fast, uninterrupted switching – <8 ms
Easy DIN rail mounting
Designed specifically for PV and inverter systems
Automatic + manual modes
Compact modular design – suitable for residential and industrial use
Disadvantages
Inverter voltage must be stabilized – source B must be ON for safe operation
Not suitable for unstable sources that do not meet specifications
Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.This product is marked with the CE label, which confirms that it complies with all applicable European Union directives and regulations. CE marking is not just a formality – it is an important indicator of quality and safety, ensuring that the product has been properly assessed, tested, and can be safely used throughout the EU market.
CE certification means that the product has been evaluated according to the main criteria:
Safety requirements – ensures that the product does not pose a risk to the user or the environment
Electromagnetic compatibility (EMC) – the device does not interfere with other equipment and is resistant to external disturbances
Environmental standards – complies with current ecological and material usage requirements
Operational reliability – the product is suitable for long-term use according to its intended purposeCE marking allows this product to:
be legally supplied and used in all European Union countries
ensure a high level of quality and safety
be used in residential, commercial, and industrial environmentsThe CE mark is a declaration of the manufacturer’s responsibility, confirming that the product complies with all applicable standards and has been assessed according to EU legislation.
What does this mean for you as a buyer?
Safe use in everyday activities
Reliable performance and reduced risk of failure
Compliance with EU standards and requirements
Suitability for professional solutions
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