The **8502SCO2V02SX11_V01** is a specific configuration of a NEMA-rated magnetic contactor produced by Schneider Electric (Square D). This device is primarily used for switching non-inductive loads (like heaters) or controlling electric motors. ### Technical Specifications Breakdown The model number encodes the specific electronic and physical characteristics of the unit: | Component Code | Description | Specifications | | :--- | :--- | :--- | | **8502** | Type | NEMA Magnetic Contactor | | **S** | Series | Type S (Standard compact design) | | **C** | Size | NEMA Size 1 | | **O** | Enclosure | Open Style (No external box/housing) | | **2** | Poles | 3-Pole (Typically 3-phase power) | | **V02** | Coil Voltage | 120V AC @ 60Hz / 110V AC @ 50Hz | | **SX11** | Auxiliary Contacts | 1 NO (Normally Open) + 1 NC (Normally Closed) | | **V01** | Factory Modification | Specific control or terminal modification | --- ### Core Electronic Components The assembly consists of several critical electronic and electromechanical parts: #### 1. The Magnetic Coil (V02) The heart of the contactor. When 120V AC is applied to terminals A1 and A2, it creates an electromagnetic field that pulls the movable contacts closed. * **Inrush VA:** High power required initially to close the contacts. * **Sealed VA:** Lower power required to maintain the contact position. #### 2. Main Power Contacts These are heavy-duty silver-alloy contacts designed to handle high current without welding shut. * **Current Rating:** For NEMA Size 1, it is typically rated for **27 Amperes** (continuous). * **Voltage Rating:** Capable of switching up to 600V AC. #### 3. Auxiliary Contacts (SX11) These are lower-current contacts used for logic signaling rather than powering the load. * **1 NO (Normally Open):** Used for "seal-in" circuits or status lights (tells a PLC the motor is ON). * **1 NC (Normally Closed):** Used for interlocking (preventing two devices from running at once). #### 4. Arc Suppressors (Optional/Internal) Designed to quench the electrical arc generated when the contacts open under load, extending the lifespan of the silver contact tips. --- ### Wiring Reference ```mermaid graph TD A[120V Control Source] --> B(Coil Terminal A1) B --> C{Electromagnet} C --> D(Coil Terminal A2) D --> E[Neutral/Common] subgraph Power Circuit L1 --> P1[Contact 1] --> T1 L2 --> P2[Contact 2] --> T2 L3 --> P3[Contact 3] --> T3 end ```