The **SVB-40-R/K** is a specific model within the series of safety switch-disconnectors (often associated with the **Eaton / Moeller** product line). These components are critical for industrial automation and power distribution, designed to manually isolate electrical circuits for maintenance or emergency stops. --- ### Technical Specifications The SVB-40-R/K typically falls under the **Vario** or **P-Series** switch categories. Below are the core electronic and mechanical parameters: | Feature | Specification Details | | :--- | :--- | | **Type** | Main Switch / Emergency-Stop Switch | | **Rated Operational Current ($I_e$)** | 40 Amperes | | **Rated Voltage ($U_e$)** | 690 V AC | | **Number of Poles** | 3-Pole (Standard) | | **Handle Color** | Red (R) with Yellow Locking Collar (K) | | **IP Rating** | IP65 (Front side protection against dust/water) | | **Mounting Type** | Rear mounting / Door coupling | --- ### Key Electronic & Functional Components #### 1. Contact Elements The internal contacts are designed for high durability and can handle significant inrush currents. They utilize a "Positive Drive" mechanism, ensuring that the contacts physically separate even if they have slightly welded due to a short circuit. #### 2. The "R/K" Designation The suffixes provide information on the human-machine interface (HMI) part of the electronic assembly: * **R (Red):** Indicates the handle is red, signifying an **Emergency Stop** function. * **K (Lockable):** Indicates the assembly includes a padlockable rotary handle. This is an electronic safety requirement (LOTO - Lock Out Tag Out) to prevent accidental re-energizing of the circuit. #### 3. Auxiliary Contacts (Optional) While the base unit is a 3-pole power switch, it often supports the addition of **Auxiliary Contacts**: * **NO (Normally Open):** Used for signaling a PLC that the switch is active. * **NC (Normally Closed):** Used for safety interlocking or monitoring. --- ### Wiring Logic Example In a typical industrial setup, the SVB-40-R/K is wired between the main power supply and a motor controller. ```mermaid graph LR A[Main Power 400V] --> B{SVB-40-R/K Switch} B --> C[Motor Starter/Inverter] C --> D[Industrial Motor] ``` ### Safety Compliance The electronic design adheres to international safety standards: * **IEC/EN 60947-3:** Low-voltage switchgear and controlgear. * **VDE 0660:** German standard for power switchgear. * **UL/CSA:** If the specific variant is North American rated. ---