The MDS9 Series Automatic Power Transfer System (APTS) is specially developed for multi-power supply systems, enabling transfer control and stable power protection. It supports CB-class transfer with short-circuit and overload protection capabilities. Its actuators deliver solutions for low-voltage transfer scenarios. The GridPro series switches integrate real-time detection of the operating temperature at key positions of the main circuit, contact wear analysis, and real-time monitoring of switch state parameters. These status data can also be transmitted to the ME-iPOWER system, enabling multi-dimensional monitoring of the overall transfer system. The APTS Automatic Power Transfer System incorporates multiple redundancy and interlocking functions to ensure the system operates smoothly, including system logic interlocking, electrical interlocking, and flexible or rigid mechanical interlocking of execution units. Depending on different application requirements, the APTS Automatic Power Transfer System can implement various incoming line schemes, such as traditional dual-power transfer, “two incoming feeders & one bus coupler” transfer, and three-power transfer.

The MDS9 Series Automatic Transfer Switch is one of the most advanced members of the MDS switch family, offering comprehensive functionality. With a maximum rated current of 4000A, it is suitable for power source end (U-U or U-G) and distribution end load transfer applications. Featuring a withdrawable structure, motorized pre-charging and coil excitation drive mechanism, and dual mechanical interlock switch body, it is equipped with the MC800 controller and a touchscreen LCD panel to ensure more accurate dual power source transfer. The MDS9 Series also includes a bypass type variant (MDS9B Series), which further enhances power supply reliability for critical applications.