The **8502SCO2V02SX22** is a specific model of a NEMA-rated magnetic contactor manufactured by Square D (Schneider Electric). This device is primarily used for non-reversing motor control and switching resistive loads in industrial environments. --- ## Technical Specifications Breakout | Feature | Specification Details | | :--- | :--- | | **Product Type** | NEMA Magnetic Contactor | | **NEMA Size** | Size 1 | | **Current Rating** | 27 Amperes (Continuous) | | **Pole Configuration** | 3-Pole (3-Phase) | | **Coil Voltage** | 110V AC @ 50Hz / 120V AC @ 60Hz | | **Enclosure Type** | Open (No separate metal box included) | | **Auxiliary Contacts** | 2 Normally Open (NO) + 2 Normally Closed (NC) | --- ## Component Breakdown ### 1. The Magnetic Coil (`V02`) The "V02" suffix denotes the control voltage. This is the electromagnetic heart of the device. When 120V is applied to the coil terminals, it creates a magnetic field that pulls the internal armature down, closing the high-power contacts to start the connected equipment. ### 2. Power Poles This is a **3-Pole** device designed for three-phase electrical systems. The contacts are made of heavy-duty silver cadmium oxide to resist welding and erosion caused by the electrical arcs generated during switching. ### 3. Auxiliary Contact Module (`SX22`) The "SX22" indicates a specific internal configuration of auxiliary contacts: * **2 NO (Normally Open):** Used for status signaling (e.g., turning on an indicator light when the motor is running) or for "seal-in" logic in a start/stop circuit. * **2 NC (Normally Closed):** Often used for interlocking logic or "Fault/Off" status indicators. ### 4. NEMA Size 1 Construction Unlike IEC-rated contactors which are application-specific, NEMA Size 1 contactors are designed with a high "service factor." They are physically larger, more robust, and can be rebuilt (the contacts and coils are replaceable) rather than being disposed of if they wear out. --- ## Common Applications * **Motor Control:** Direct-on-line (DOL) starting of 3-phase motors up to 7.5 HP at 230V or 10 HP at 460V. * **Heating Loads:** Switching resistive heating elements in industrial ovens. * **Lighting Control:** Managing large banks of high-intensity discharge (HID) or LED stadium/factory lighting. ---