The **SVB-B8W-R/K** is a specialized component, primarily categorized as an **Emergency Stop (E-Stop) Control Station** or an **Industrial Switch Assembly**, typically manufactured by brands like **IDEC** or **Banner Engineering** (depending on the specific series prefix). Below is a detailed breakdown of its electronic and mechanical parts. --- ### 1. General Specifications This part is a complete assembly designed for high-reliability safety shutdown in industrial environments. | Feature | Specification | | :--- | :--- | | **Actuator Type** | Mushroom Head (Push-Lock, Turn-Reset) | | **Contact Configuration** | Usually 2NC (Normally Closed) or 1NO/1NC | | **Illumination** | Non-Illuminated (standard for "R/K" variants) | | **Mounting** | 22mm or 30mm Panel Mount | | **Protection Rating** | IP65 / NEMA 4X (Waterproof/Dustproof) | --- ### 2. Electronic & Hardware Components #### A. The Actuator (Mushroom Head) The "R" in the part number usually signifies **Red**, the universal color for emergency stops. The "K" often denotes a **Key-release** or a specific locking mechanism. * **Action:** It uses a "Trigger Action" mechanism, meaning the contacts will not open until the button is fully latched, preventing "teasing" (partially pushing the button without triggering the stop). #### B. Contact Blocks (The Electrical Interface) The back of the unit contains the electrical terminals. * **NC (Normally Closed) Contacts:** These are the safety-critical components. In a stop event, the circuit is physically broken to cut power. * **Gold-plated or Silver Contacts:** Depending on the specific sub-model, these are used to ensure low electrical resistance even in oxidizing environments. #### C. The Enclosure / Housing * **Base Material:** High-impact thermoplastic or die-cast aluminum. * **Lead-in Wires:** Usually connected via screw terminals or push-in connectors. --- ### 3. Part Number Breakdown (Typical) | Segment | Meaning | | :--- | :--- | | **SVB** | Series identifier (Safety Vertical/Base Mount) | | **B8** | Size or Enclosure type (e.g., 80mm width or specific hole pattern) | | **W** | Waterproof/Weatherproof sealing | | **R** | Red (Actuator color) | | **K** | Key Reset or Specific Kit configuration | --- ### 4. Safety Standards Compliance This part is designed to meet international safety regulations to ensure it fails in a "safe" state: 1. **ISO 13850:** Safety of machinery – Emergency stop function. 2. **IEC 60947-5-1:** Low-voltage switchgear and control gear. 3. **UL/CE Marking:** Certified for North American and European industrial use. ---