The **SVB-2B-R** is a specific electronic component within the category of **Industrial Safety Switches** and **Load Break Disconnectors**, manufactured primarily by Schneider Electric (under the TeSys Vario range). Below is a detailed breakdown of its electronic and mechanical specifications. --- ### 1. General Overview The SVB-2B-R is an emergency stop switch assembly designed for mounting on a panel or enclosure. It is used to manually disconnect power to a machine or circuit for maintenance or emergency safety. ### 2. Technical Specifications | Feature | Specification | | :--- | :--- | | **Series** | TeSys Vario | | **Product Model** | Vario Switch Disconnector (Complete Unit) | | **Current Rating ($I_{th}$)** | 12 Amps to 25 Amps (depending on application) | | **Voltage Rating ($U_e$)** | 690 V AC | | **Handle Color** | Red (Emergency Stop standard) | | **Base Color** | Yellow | | **Mounting Type** | 4-hole front mounting | | **Ingress Protection** | IP65 (Dust-tight and water jet resistant) | --- ### 3. Key Electronic Components The unit is composed of three primary sub-parts that function together: #### A. The Switch Body (V02 / V1 / V2) * **Contacts:** High-conductivity copper alloy contacts. * **Poles:** Usually a 3-pole configuration. * **Mechanism:** Rotary action that ensures a "Positive Break" (forced opening of contacts even if they attempt to weld). #### B. The Operating Handle * **Red/Yellow Palette:** The visual indicator for safety. * **Padlockable:** Features a built-in mechanism to lock the switch in the "OFF" position with up to 3 padlocks (LOTO - Lockout/Tagout). #### C. Terminal Connections * **Type:** Screw clamp terminals. * **Compatibility:** Designed for both solid and stranded wires, often equipped with protective shrouds to prevent accidental finger contact (IP20 at terminals). --- ### 4. Circuit Symbol and Operation In an electrical schematic, the SVB-2B-R is represented as a **Switch Disconnector**. ```mermaid graph LR A[Power Input L1, L2, L3] --- B{SVB-2B-R Switch} B --- C[Motor / Load] style B fill:#f96,stroke:#333,stroke-width:2px ``` ### 5. Application Usage * **Local Isolation:** Used near motors so technicians can kill power locally. * **Emergency Stop:** The red/yellow color scheme designates it as a global emergency disconnect. * **AC-23 Category:** Rated for switching highly inductive loads (like motors) under heavy-duty conditions. ---