The **S-B6-R** typically refers to a specific series of **industrial emergency stop (E-Stop) switches** or push-button components, most notably associated with brands like **IDEC** or similar industrial automation manufacturers. Below is a breakdown of the electronic and mechanical parts that constitute an S-B6-R unit. --- ### 1. Key Component Breakdown | Component | Description | Function | | :--- | :--- | :--- | | **Actuator (Mushroom Head)** | The large, red circular button. | The physical interface the user presses to trigger the stop. | | **Contact Block** | The electrical housing behind the panel. | Contains the actual switching mechanism (usually NC/NO). | | **Mounting Collar** | The threaded ring or bracket. | Secures the switch to the control panel or enclosure. | | **Spring Mechanism** | Internal high-tension spring. | Ensures "Positive Action" (it won't stay halfway triggered). | | **Terminals** | Screw or solder points. | Where the wiring from the control circuit is connected. | --- ### 2. Electrical Specifications The S-B6-R is designed to handle high-reliability control signals rather than high-power direct loads. * **Contact Configuration:** Usually **1NC (Normally Closed)** or **2NC**. This ensures "Fail-Safe" operation—if a wire breaks, the machine stops. * **Insulation Resistance:** Typically **100MΩ minimum** (500V DC megger). * **Contact Resistance:** **50mΩ maximum** (initial value). * **Rated Voltage:** Usually rated for **600V AC/DC** insulation, with operational currents varying by voltage (e.g., 3A at 240V AC). --- ### 3. Mechanical Operation The "R" in the suffix often denotes **Red** or **Reset type**. There are two primary electronic behaviors for these parts: 1. **Push-Lock, Turn-Reset:** Once pressed, the electrical circuit remains open (broken) until the operator physically twists the button to release it. 2. **Push-Lock, Pull-Reset:** The circuit remains open until the operator pulls the button back to the neutral position. --- ### 4. Safety Standards Electronic parts labeled S-B6-R are generally compliant with international safety ratings to ensure they function in emergencies: * **IP65/66 Rating:** Protection against dust and water jets. * **UL/CSA Listed:** Certified for North American industrial use. * **Positive Opening Operation:** Even if the contacts weld together, the force of pressing the button is designed to physically break the circuit. ---