Siemens 3UA5900-2A NSMP motor protection switch is a motor protection device rated for 690 V with a nominal current range of 10–16 A. The 3UA5900-2A NSMP designation identifies this specific unit within Siemens’ NSMP motor protection switch lineup. It is intended for use in motor circuits where protection is required for motors operating at up to 690 V and within the 10–16 A range.
