The **8536SHO2V05** is a specific model of a NEMA-rated magnetic motor starter manufactured by **Schneider Electric (Square D)**. It is part of the Type S product line, designed for across-the-line starting and stopping of AC motors. Below is the breakdown of its electronic and electromechanical components. --- ## 1. Technical Specifications Overview This starter is a **NEMA Size 6** device, which is designed for heavy-industrial applications involving high horsepower. | Feature | Specification | | :--- | :--- | | **Manufacturer** | Schneider Electric (Square D) | | **Product Type** | Magnetic Motor Starter (Type S) | | **NEMA Size** | Size 6 | | **Pole Configuration** | 3-Pole (3-Phase) | | **Continuous Ampere Rating** | 540 Amperes | | **Control Voltage (Coil)** | 440V AC @ 50Hz / 480V AC @ 60Hz | | **Overload Type** | Melting Alloy (Thermal) | | **Enclosure Type** | Open (No cabinet included) | --- ## 2. Key Electronic & Electromechanical Parts ### A. The Magnetic Coil (V05 Designation) The "V05" suffix indicates the specific voltage rating of the electromagnetic coil. * **Function:** When energized, the coil creates a magnetic field that pulls the main contacts closed, completing the circuit to the motor. * **Voltage:** 480V AC at 60Hz. * **Duty:** Continuous duty, designed to hold the contacts under significant mechanical tension. ### B. Power Contacts (Stationary and Movable) * **Material:** Typically silver-cadmium oxide or similar alloys to resist welding and arc erosion. * **Action:** These are heavy-duty copper busbars designed to handle up to 540A of current. ### C. Thermal Overload Relay The **8536** series uses a block to hold "Thermal Units" (heaters). * **Technology:** Melting Alloy (Solder pot). * **Protection:** It monitors the heat generated by the current flowing to the motor. If the current stays too high for too long, the alloy melts, releasing a spring-loaded mechanism that trips the control circuit. * **Note:** Heaters are usually sold separately based on the specific Full Load Amps (FLA) of the motor being used. ### D. Auxiliary Contacts * **Function:** These are smaller contacts used for control logic (e.g., lighting a "Run" lamp on a panel or signaling a PLC). * **Configuration:** Typically comes with one Normally Open (N.O.) holding circuit contact. --- ## 3. Identification Nomenclature To understand the part number breakdown: | Code | Meaning | | :--- | :--- | | **8536** | NEMA Magnetic Starter | | **S** | Type S (Square D Series) | | **H** | NEMA Size 6 (Large Industrial Size) | | **O** | Open Type (No enclosure) | | **2** | 3-Pole | | **V05** | 480V 60Hz / 440V 50Hz Coil | --- ## 4. Maintenance and Safety * **Arc Chutes:** Large NEMA Size 6 starters feature arc chutes that contain and extinguish the electrical arc created when the contacts open under load. * **Replacement Parts:** Because this is a Size 6 starter, the contact kits and coils are replaceable items, extending the life of the unit without needing to replace the entire frame.