Autoro AB20B Dual Power Auto Transfer Switch ATS DC5-30V Max 20A/Channel for Backup Power Systems Solar Panel Off-grid System

Autoro AB20B Reliable High-Power 20A Automatic Power Transfer Switch ATS for Your 12V/24V Systems Support DC 5-30VEnsure uninterrupted power supply for your demanding applications with the Autoro AB20B. This dual power automatic transfer switch (ATS) is engineered to manage two DC inputs—such as battery, UPS power—and deliver a robust, single output. With its zero-delay switching and 20A per channel capacity, it's the ideal control module for high-power off-grid, backup, solar panel, car fridge, routers and mobile setups.Instant, Automatic Power Transfer (ATS)The AB20B provides true uninterrupted power. It continuously monitors both inputs within the DC 5V-30V range and automatically switches from a lower-voltage source to the higher one in milliseconds. This auto transfer is perfect for emergency backups, ensuring your inverter or smart appliances never lose power. It can also discharge two batteries simultaneously when their voltage equalizes, expanding capacity.High-Current 20A Output for Demanding LoadsBuilt to handle significant power, this ATS supports a maximum of 20 amp (20A) per channel. Its wide 5V-30V input makes it fully compatible with standard 12 volt and 24V systems, perfect for powering larger inverters, tools, and equipment that standard mini switches can't handle.Built-in Safety & Robust ProtectionSafety is integrated. The control module features anti-backflow diodes that prevent reverse current, protecting your batteries and generators from damage. The overload-safe design ensures reliable operation in emergency or harsh conditions.Professional & DIY-Friendly InstallationDesigned for easy integration, it features sturdy screw terminals for secure, high-current wiring. Its compact form factor is ready to go onto a standard DIN rail for a clean install in a service panel or cabinet, suiting both professional and advanced DIY projects.Dual -Battery Expansion &Extend Runtime – Connect two LiPo/Liion/LiFePO₄ batteries within DC 5-30V (2 batteries must be within 20V difference). Higher voltage powers the load first; when equal, both discharge simultaneously for longer runtime. Perfect for FPV drones (30+ min flights), longrange ebikes, electric skateboards/e scooters, RC rock crawlers, robotics, and portable surveillance.***Note on Primary & Backup Power Setting: The AB20 Series is an automatic transfer switch that selects the higher-voltage input source automatically. It does NOT support manual assignment of a fixed primary and backup power source. For applications requiring a configurable primary and backup power setting, please go for the Autoro AB18 DC Dual Power Automatic Transfer Switch ATS 60V 18A, which is specifically designed for that purpose.Ideal Applications for the AB20B (20A) ATS:This unit is engineered for higher-power needs where reliability is critical. Key uses include:Larger Off-Grid Power Systems: Automatically manage power between large battery, ups power for cabins, sheds, or off-grid worksites.High-Power Mobile & Marine: Link vehicle engine batteries to high-capacity house banks in RVs, vans, or boats to run inverters, fridges,solar panels and other DC power systems.Robust Backup Power: Provide seamless emergency transfer for home servers, security systems, or sump pumps using a backup battery or generator.Industrial & Workshop Controls: A reliable grid controller for automation, motor controls, and professional 12V/24V equipment.Technical Specifications:Model: Autoro AB20B ATSFunction: Dual-Input, Single-Output Automatic Transfer SwitchInput Voltage: DC 5V–30VMax Output Current: 20A per channelSwitching Delay: 0 SecondsProtection: Anti-backflow DiodesInstallation: Screw Terminals, DIN Rail MountImportant Note: For motorized loads, ensure the input voltage plus back EMF does not exceed 30V.Why Choose Autoro? As a direct source manufacturer, we deliver core power components that are durable and perform. The AB20B offers professional-grade automatic transfer for users who need robust, high-current switching.Autoro Dual Power Automatic Power Transfer Switch Options: