Heavy Duty starters are designed for across the line starting of single phase and polyphase motors.. These controls are available in NEMA Sizes 00 through 8. In addition to the usual NEMA Starter Sizes, Siemens offers three exclusive Half Sizes; 13/4, 21/2 and 31/2. These integral sizes offer the same rugged, industrial construction as our NEMA Sizes and ensure efficient operating performance. Half Sizes provide a real cost savings by cutting down on over capacity when NEMA Sizes exceed the motor ratings. All Siemens Heavy Duty controls, including our popular Half Sizes comply with applicable NEMA and UL tests.. All starters are supplied with a NO holding interlock that in conjunction with an appropriate pilot device will provide low voltage protection or release.. NEMA starters are ideal for applications requiring dependability and durability. Typical applications include use with machine tools, air conditioning equipment, material handling equipment, compressors, hoists and various production and industrial equipment as well as in demanding automotive applications.. Starters are available as an open type or in NEMA 1, 12/3/3R, 4 (painted), 4/4X (stainless), 4X (fiberglass), and 7 & 9 enclosures.. For added reliability, the gravity dropout of the armature and contacts is assisted by stainless steel springs which help provide quick, precise opening of the contacts.. The 45 degree, wedge action contacts reduce tracking and provide faster arc quenching. The resulting self-cleaning and reduced contact bounce mean cooler operation and longer life for the large silver cadmium oxide contacts.. Control terminals are self-rising pressure type.. Magnetic coils are carefully wound and then sealed in epoxy. Encapsulation helps seal out moisture, promotes heat transfer and resists electrical, mechanical and thermal stresses.. Starters are available with dual voltage, dual frequency coils. They are designed to operate on either 50 or 60 Hertz.. Thermoset materials resist arc tracking and the stresses of heat and severe impact.. All starters can be modified in the field with a complete range of accessories. These include pushbuttons, selector switches, pilot lights, auxiliary contacts and surge suppressors.

• NEMA Motor Starters • 600 VAC Selectable Trip Class 5, 10, 20 or 30 3-pole with 1NO aux

NEMA Motor Starters • 600 VAC Selectable Trip Class 5, 10, 20 or 30 3-pole with 1NO auxSiemens