The **SVB-DB-R/CE** is a specific electronic component typically categorized as a **Safety Main Switch** or **Emergency-Stop Disconnector**, often manufactured by companies like **Eaton (Moeller)**. These parts are critical in industrial automation for power isolation and circuit protection. --- ### 1. Technical Specifications The following table highlights the core electronic and mechanical parameters of the SVB-DB-R/CE series: | Feature | Specification | | :--- | :--- | | **Type** | Main/Emergency-Stop Switch | | **Poles** | Usually 3-Pole (can vary by configuration) | | **Actuator Color** | Red handle with Yellow locking ring (Safety standard) | | **Mounting** | Rear mounting (Distribution Board/DIN rail) | | **Protection Rating** | IP65 (Front side) | | **Max Voltage** | 690V AC | | **Rated Current ($I_u$)** | Typically 20A to 32A (model dependent) | --- ### 2. Core Electronic Components & Functions The device is composed of several functional electronic and mechanical parts: #### A. Contact Block The internal contacts are designed for **Positive Opening Operation**. This ensures that the circuit is physically broken even if the contacts attempt to weld together under high load, meeting international safety standards (IEC/EN 60947-3). #### B. Rotary Actuator The red handle serves as the interface. - **0 (OFF):** Disconnects the load from the power source. - **1 (ON):** Completes the circuit. - **Locking Mechanism:** Allows for Padlocking in the "OFF" position for LOTO (Lockout/Tagout) procedures. #### C. Terminals The part features screw-type terminals designed for high-vibration environments. These terminals are often "shrouded" to provide finger-proof protection (IP20) inside the cabinet. --- ### 3. Application Use Cases 1. **Industrial Machinery:** Used as a local disconnect to de-energize a motor for maintenance. 2. **Control Panels:** Serves as the main power entry switch for PLC cabinets. 3. **Safety Circuits:** Integrated into E-Stop loops where physical disconnection of the primary power line is required. --- ### 4. Certifications The "CE" suffix indicates compliance with European Union health, safety, and environmental protection standards. - **IEC/EN 60947-3:** Standard for low-voltage switchgear. - **VDE 0660:** German safety regulation for industrial switches.