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Definite Purpose Motor Starters

Available145 products

Definite purpose motor starters are electrically operated switches with specific operating performance specifications. Also known as DP motor starters, they can be cost-effective alternatives to IEC and NEMA motor starters in applications with lower life-cycle requirements. They combine contactors and overload relays to control electric loads and protect against excessive current or phase failure for machinery and equipment in applications like HVACR.

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Enclosed Non-Reversing Starters with Thermal Overloads

Enclosed Non-Reversing Starters with Thermal Overloads

These non-reversing definite-purpose motor starters with thermal overloads have enclosures that protect their internal components from impacts, debris, and dust. Non-reversing motor starters connect and disconnect power to motors and other high-current equipment and machinery in a single direction. Thermal overloads, also known as heaters, prompt motor starters to break electrical connections with downstream equipment once a set temperature is reached to protect connected loads from overheating and causing damage. They contain either bimetallic strips or melting alloy solder materials. When the current exceeds a predetermined threshold and temperatures rise, the material bends or liquefies, causing the thermal unit to break the circuit and cause the motor starter to break its power contacts. As the materials cool down, they will return to their normally closed position and the circuit can be reset automatically or manually.

2 Pole / Single Phase Starters

Definite Purpose Motor Starters
Thermal Units
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3 Pole / Three Phase Starters

Definite Purpose Motor Starters
Thermal Units
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Note: Product availability is real-time basis and adjusted continuously. The product will be reserved for you when you complete your order.