The removable connectors on the System Power Supplies and legacy Bulk Power Supplies are not designed to interrupt current flow in circuits under load and can be damaged if used for this purpose. If you need to disconnect power, use a separate component such as a knife blade fuse terminal block or breaker that is designed for this purpose. Multiple manufacturers make knife blade fuse terminal blocks that provide a disconnect function and fusing for the supply. If you use a fuse or breaker in the disconnect circuit, size it appropriately for the load.