AC120V 15A Automatic Transfer Switch for Generator & Inverter, ATS Relay with NEMA 5-15P Plug, Auto Source Switch for RV Shore Supply, Emergency Backup & Off Grid Systems

Application: Made for use with inverter, shore power or generators. Can be used for residential and small businesses that require continuous power supply. It can also be used for emergency services that require uninterrupted power for communication and response operations during outages. Specification: Operating Voltage: AC 90 to 135V 50/60Hz. Maximum Current: 15 Amp. Short Switching Time: Transfer time less than 30mS (0.03 second). For most smart devices or computers, a 30mS switching action will not affect their normal operation. Function: Our automatic transfer switch is an easy to install 15Amp inline transfer relay that can switch between AC input 2 (utility or shore power) and AC input 1 (inverter or generator) AC sources. When AC input 2 is powered on, the load power will be switched to AC input 2. When AC input 2 is powered off, the load power will be switched to AC input 1. Material: The durable plastic shell has better flame retardancy, water resistance and moisture resistance, and can be used for a long time in indoor or outdoor environments. The internal metal components are mainly made of copper to ensure stable transmission and prevent short circuits or malfunctions.

• 【15 Amp Automatic Transfer Switch】 This AC120V automatic transfer switch is designed to automatically switch between utility power, inverter, shore power, or generator power sources. Ideal for RVs, backup power systems, emergency power supply setups, off-grid systems, and small residential applications requiring uninterrupted AC power transfer.
• 【Fast & Stable Power Switching】 Features rapid transfer time under 30ms (0.03 second), helping maintain continuous operation for sensitive electronics, routers, smart devices, computers, and communication equipment during power interruptions or source switching.
• 【Wide Power Source Compatibility】 Compatible with generators, pure sine wave inverters, shore power systems, battery backup systems, RV electrical systems, marine applications, solar power setups, and emergency standby power installations. Supports AC 90-135V input at 50/60Hz with maximum 15A current capacity.
• 【Safe & Durable ATS Relay Design】 Built with flame-retardant ABS housing and high-conductivity copper internal components for stable current transmission, overload resistance, moisture resistance, and long-term reliability. Designed for continuous indoor or protected outdoor power management applications.
• 【Easy Plug-and-Play Installation】 Equipped with NEMA 5-15P plug design for simplified installation and operation. Automatically prioritizes AC Input 2 (utility/shore power) when available and switches back to AC Input 1 (generator/inverter) during outages. Compact inline ATS design saves installation space and improves backup power efficiency.