A manual starter is a motor controller whose contact mechanism is operated by a mechanical linkage from a toggle handle or push button which is in turn operated by hand. A thermal unit and direct acting overload mechanism provides motor running overload protection. Basically, a manual starter is an “ON-OFF” switch with overload protection. Siemens manual starters and switches are used in many applications for local control of equipment in the industrial or construction markets, such as operating power saws, pumps, fans, conveyors, blowers, packaging, sorting and other machinery. These starters are UL listed and CSA approved. Siemens offers a variety of manual starters for various applications. This is a test.
Class SMF
Class SMF fractional horsepower starters provide On-Off control for small single phase motors up to 1 HP AC or up to ¾ HP DC. It also can operate two speed AC, single phase, one or two poles motors.
Class MMS and MRS
Class MMS and MRS manual motor switches and manual reversing switches are designed to operate single- or three-phase AC or DC motors. Overload protection should be provided externally. Applications for two speed motors can also use these switches.
Continuous current rating 30 amperes at 250 volts max, 26.4 amperes at 277 volts, 20 amperes at 600 volts max, 30 amperes resistive at 600 volts max.
Class 11 - 3RV
Class 11 3RV across the line manual motor starters and switches provide local control for single- or three phase motors up to 15 HP. Starters have bimetallic heater elements to provide over-current protection.