Siemens SMP30S Manual Starter-Protector MSP 3 Class 10

Siemens SMP30S Manual Starter-Protector MSP 3 Class 10 is a compact motor-control device that combines a local start/stop manual switch with built‑in overload protection, designed for small-motor circuits. In the MSP 3 configuration, it is rated for 16–25 A and uses Class 10 overload trip characteristics, meaning the protector interrupts current within the defined tA range during overload events. This unit is intended for direct use in control panels where manual operation is preferred and reliable motor protection is required, providing an integrated alternative to separate overload relays and contactors for simple motor control tasks. Typical applications include small industrial motors in machines, pumps, conveyors, and fans where frequent manual operation is needed and overload protection is essential. The SMP30S MSP 3 Class 10 model embodies Siemens' motor-starter protector concept, offering straightforward wiring, a compact footprint, and compatibility with standard control cabinet mounting practices.