3P 3 Phase Din Rail Automatic Transfer Switch (Size 100A) Compact, DIN rail mounted automatic transfer switch designed for three phase PV and inverter systems that require reliable, uninterrupted switching between two power sources. Rated for continuous operation at 100A, this dual power transfer selector provides automatic source selection and secure threepole isolation for commercial and residential installations. Key benefits Automatic, reliable source switching: Automatically transfers load between primary supply and secondary source such as an inverter or generator, reducing manual intervention and downtime. Designed for continuous 100A loads: Sized and rated for 100A three phase circuits to support medium power distribution panels and inverter outputs. Spacesaving DIN rail mounting: Fits standard DIN rail assemblies for easy integration into distribution enclosures and existing control panels. Improved operational safety: Threepole switching isolates all phases simultaneously to maintain balanced protection of three phase equipment. Minimal interruption switching: Engineered for rapid transfer to keep critical loads powered with minimal interruption during source changeover. Versatile compatibility: Suitable for PV inverter systems, battery inverters, backup generators, and facility power redundancy schemes. Function and performance 3P three phase design switches all three phases together for balanced load transfer. Dual power automatic transfer selector manages two input sources and connects the load to the available supply according to preset control logic. Uninterrupted switching capability supports continuous operation for systems demanding steady power flow. Built for integration into standard electrical cabinets and distribution boards using DIN rail mounting. Compatibility and sizing Intended for use in three phase electrical systems and compatible with inverters used in solar PV and battery backup installations. Size specification: 100A rated model. Other available ratings in the same product family include 63A and 125A for different load requirements. Practical use scenarios Residential solar with battery backup: Automatically switch the household distribution panel to inverter power during grid outages and restore to utility supply when available, ensuring essential circuits remain powered. Small commercial site with standby generator: Maintain critical three phase loads by automatically transferring to generator input on mains failure and returning to mains when stable. Remote equipment shelter or telecom site: Integrate with a PV plus inverter setup to prioritize renewable generation and switch seamlessly to secondary power when needed. Technical highlights Threepole switching for full three phase isolation Dual source automatic transfer function for mains and inverter or generator DIN rail mounting for panelfriendly installation Rated current: 100A This 100A 3P DIN rail automatic transfer switch offers a straightforward solution for three phase power source management in PV, inverter, and backup power applications where dependable and compact automatic switching is required.