Modular automatic backup power transfer switch with protection functions | for generators | for uninterrupted power supply | 3 inputs | 2P | 100A | 230V

The rated input system is AC 3x230V, 50/60Hz. This means three separate 230V AC power sources, for example the mains supply, a generator and an inverter. Only one selected source supplies the load at a time.

For example, L1 may be the main power grid, L2 a generator and L3 an inverter or another backup power source. Priority can be selected according to the control logic of the specific system.

When switching between sources, both the phase and neutral conductors are disconnected. This helps prevent an electrical connection through the neutral conductor between separate independent power sources.

2P L+N switching means switching the phase and neutral conductors. The protective PE conductor is not part of the switching function. Generators, inverters and other sources must be connected according to the appropriate N and PE arrangement for the specific system.

The ATS overvoltage function monitors longer-duration increases in mains voltage. It does not replace a separate surge protective device (SPD) designed for lightning-induced or short-duration transient overvoltages.

The feedback contacts are passive and do not provide 12V, 24V or 230V power themselves. They can be used to transmit status signals to a PLC, alarm system, generator controller, BMS or other automation equipment.

When transferring from one power source to another, there is normally a certain switching interruption. Therefore, an ATS should not be described as a completely uninterrupted power supply device.

• 3 independent 230V AC power sources in one ATS.
• 2P L+N switching disconnects both phase and neutral.
• 100A rated current allows use in higher-power single-phase systems.
• Automatic source selection reduces the need for manual switching.
• Configurable priority allows selection of the main and backup sources.
• Manual mode allows the operator to select the source.
• Overvoltage, undervoltage, overcurrent and overheating monitoring.
• Display of 3 input voltages and output current.
• Adjustable delays allow the transfer logic to be adapted.
• COM / NO / NC dry contacts suitable for integration with PLC, BMS, EMS and generator controllers.

• 3x230V does not mean a 3x400V three-phase system: it means three separate 230V AC power inputs.
• Up to 100A: cable cross-section and protection must be selected according to the actual circuit load.
• ATS is not a UPS: a short power interruption may occur during transfer.
• Dry contacts do not supply power: the signalling circuit requires an external power supply.
• Not intended for parallel operation or synchronisation of power sources.
• Integrated voltage monitoring does not replace an SPD.

A facility has three independent 230V AC power sources: L1 – mains supply, L2 – generator, L3 – inverter. Under normal conditions, the load is supplied from L1. If L1 is lost or its voltage becomes unsuitable, the ATS transfers both the L and N conductors to L2 after the set delay. If L2 is also unsuitable, the system may select L3. When the priority L1 source recovers, the ATS may automatically return the load to L1 after the set delay.

Up to 3 independent single-phase 230V AC power sources.

It means three separate 230V AC power inputs. It is not a standard 3x400V three-phase power system.

The switch simultaneously transfers two conductors – phase L and neutral N.

Yes. Double disconnection of L and N is used.

Yes. One of the three 230V AC sources may be a generator, provided its electrical parameters meet the requirements of the system.

Yes, provided the inverter AC output is compatible with the 230V AC system.

Yes. The ATS supports power source priority selection.

100A.

No. The ATS automatically transfers between power sources, but a short power interruption may occur during switching.

Yes. COM / NO / NC contacts can be used as logic signals for a PLC or other automation equipment.

The 100A ATS must be installed according to the design of the specific electrical installation. Cable cross-section, short-circuit protection, circuit breaker or fuse characteristics, N and PE conductor arrangement, generator and inverter control logic and overall system selectivity must be evaluated. 2P switching disconnects L and N but does not switch PE. Different AC power sources must not be incorrectly connected in parallel.