Lovato ATL100 Automatic Transfer Switch Controller

Controller for automatic changeover between two supplies

A changeover panel for 2 sources needs a decision-making unit, and the ATL100 from Lovato Electric is one: Automatic transfer switch controller for 2 power sources, single phase control, modular housing. It checks both supplies continuously and switches the load to the healthy one.

Measuring inputs accept 110-230VAC with true RMS measurement, the supply range is 110-230 VAC, and the display is no.

Technical specifications

Selecting the version

Model choice follows the topology (single-phase or three-phase, two or three sources, with or without tie-breaker) and then the extras: expansion slots, optical port, NFC set-up.

Confirm that the output relays can drive your contactor coils directly or add interposing relays where the datasheet ratings are exceeded.

Applications and installation

Where a site has utility power and a standby generator, the controller handles the changeover logic: it can issue the generator start command, wait for stable voltage and then transfer the load.

Dimensions are listed in the table. Relay outputs and inputs are programmable; use the Xpress software or the optical interface to configure.

For panel design and commissioning, the practical figures to keep at hand are: measuring accurancy ±0.25% f.s; wiring mode Single-phase; climatic sequence Z/ABDM (IEC/EN 60068-2-61); shock resistance 15g (IEC/EN 60068-2-27); vibration resistance 0.7g (IEC/EN 60068-2-6); execution Modular housing (3 modules DIN 43880); material Polyamide; mounting 35mm DIN rail (IEC/EN 60715) or screw-type by means of removable clips; degree of protection IP40 on front, IP20 on terminals; dimensions (W x H x D) 53.5 x 104.7 x 63 mm; weight 300 g; operating temperature (min) -30 °C; operating temperature (max) +70 °C; number of relay output 3. These come straight from the datasheet and are repeated here so that the key installation limits are visible without opening the PDF.

Related Lovato Electric products: Lovato ATL600 Automatic Transfer Switch Controller 2 Sources, Lovato DCRL8 8-Step Automatic Power Factor Controller, Lovato LVM20A240 LVM20 Level Control Relay, Lovato LVM40A240 LVM40 Level Control Relay, Lovato PMIB1A230 Insulation Monitoring Relay for IT Networks and Lovato LVMP30A240 LVMP30 Pump Start-Up Priority Change Relay.

Documents and quotation

Download the attached datasheet for ATL100 from the Lovato Electric online catalogue (English) to see every parameter in full. Check the number of sources, the supply voltages, the contactor or breaker type and the generator start arrangement against your own drawings first; the manufacturer may update datasheet figures without notice. More products of this type are under controllers & data acquisition. Use the quotation form with the code ATL100 and your quantity; availability is confirmed by Seven Star LLC, an independent supplier in Muscat.