The **8502SDO2V07_V01** is a specific part number representing a **Non-Reversing Magnetic Contactor** from the Square D (Schneider Electric) Class 8502 Type S series. These devices are used for switching electrical power circuits, typically for motor control or resistive loads. --- ## Technical Specifications The following table outlines the core electronic and mechanical characteristics of this specific unit: | Feature | Specification | | :--- | :--- | | **Manufacturer** | Square D (Schneider Electric) | | **Product Series** | Class 8502 Type S | | **NEMA Size** | 2 | | **Pole Configuration** | 3-Pole (3P) | | **Ampere Rating** | 45A | | **Maximum Voltage** | 600V AC | | **Coil Voltage (V07)** | 480V AC @ 60Hz / 440V AC @ 50Hz | | **Enclosure Type** | Open (No external box) | | **Phase** | 3-Phase | --- ## Breakdown of the Part Number Components The alphanumeric code provides specific details about the internal electronic components and build: 1. **8502**: Identifies the device as a NEMA-rated magnetic contactor (without overload protection). 2. **S**: Refers to the "Type S" design, which is modular and allows for various accessories. 3. **D**: Indicates the physical frame size (Size 2). 4. **O**: Signifies an **Open** construction (intended for mounting inside a larger control panel). 5. **2**: Specifies the number of poles (this can vary, but "2" in this sequence often refers to the specific design revision or phase configuration for Size 2). 6. **V07**: This is the **Coil Code**. It specifies that the electromagnetic coil is rated for **480V AC**. 7. **V01**: Usually a suffix indicating a specific modification or a secondary coil voltage/frequency rating (often 120V AC for control circuits if used in a specific kit, though primarily 480V in the V07 base). --- ## Internal Electronic Components The 8502SDO2V07_V01 consists of several critical electronic and electromechanical parts: ### 1. The Electromagnetic Coil (The Heart) * **Function:** When 480V AC is applied to the coil terminals, it creates a magnetic field. * **Action:** This field pulls the movable armature toward the stationary core, closing the power contacts. ### 2. Stationary and Movable Contacts * **Material:** Typically silver-cadmium oxide or similar alloys to resist welding and arcing. * **Function:** These physically bridge the gap between the line (source) and load (motor/heater). ### 3. Arc Chutes * **Function:** These surround the contacts to quench the electrical arc generated when the contacts open under load, preventing damage to the device. --- ## Applications * **Large Motor Control:** Starting and stopping 3-phase motors up to 25 HP at 460V. * **Lighting Loads:** Controlling large banks of industrial lighting. * **Heating Elements:** Switching high-wattage resistive heating circuits.