MSD-DA Manual Service Disconnect (400, 500A, 550A, 630A)

The MSD-DA Series features a rear-mount installation design, an integrated signal control pin, and an ergonomic handle-assisted mating structure. It is available with or without an integrated fuse, providing different voltage and current configurations for various high-voltage applications.
With a compact structure, reliable electrical performance, IP68 protection after mating, and competitive pricing, the MSD-DA Series provides a cost-effective solution for high-voltage circuit isolation and maintenance protection.
 

What Is a MSD?

A MSD is a manually operated high-voltage disconnect device used to isolate the high-voltage circuit of an electric vehicle or battery system.
During maintenance or service, the MSD can be manually disconnected to separate the high-voltage power circuit, helping service personnel work on the vehicle or battery system more safely.

Depending on the system architecture, an MSD can typically be installed in:
--Battery pack enclosure
--High-voltage PDU
--High-voltage junction box
--Integrated power electronics or controller systems

For commercial electric vehicles equipped with multiple battery packs, multiple MSDs may be required, depending on the battery architecture and high-voltage circuit design.