The **M2SES-2B3-R/UL** is a specific model of an industrial selector switch, typically manufactured by companies like **Altech Corp** or similar industrial control component providers. This part is designed for panel mounting to control electrical circuits manually. --- ### 1. Technical Specifications Below are the primary electronic and mechanical characteristics of the M2SES-2B3-R/UL: | Feature | Specification | | :--- | :--- | | **Series** | M-Series (22mm Industrial) | | **Type** | Selector Switch (Key Operated) | | **Positions** | 3-Position | | **Action** | Maintained (Stays in position) | | **Contact Configuration** | Typically 2 NO (Normally Open) | | **Mounting Diameter** | 22.5 mm | | **Illumination** | Non-Illuminated | | **Safety Certification** | UL Listed, CSA Certified | --- ### 2. Component Breakdown #### A. The Operator (The Head) The "2B3" designation refers to the physical interface. This model uses a **Key Release** mechanism. * **Key Removability:** The "R" in the suffix often indicates specific key-pull positions (e.g., the key can only be removed in the center position or all positions, depending on the exact sub-configuration). * **Bezel:** Usually made of polished chrome or reinforced plastic for industrial durability. #### B. The Contact Blocks While the operator is the part you see, the electronic switching happens in the **Contact Blocks** attached to the back. * **Rating:** Typically rated for **10A at 600V AC**. * **Logic:** In a 3-position switch: * *Left Position:* Activates Contact Block A. * *Center Position:* Both blocks Open (Off). * *Right Position:* Activates Contact Block B. #### C. Environmental Durability This part is engineered for harsh environments: * **NEMA Rating:** Often rated NEMA 4X/12 (Water-tight, Dust-tight, Corrosion resistant). * **IP Rating:** Generally **IP65**, protecting against low-pressure water jets and total dust ingress. --- ### 3. Wiring Logic (Example) In a standard industrial control panel, the wiring for a 3-position maintained selector switch follows this logic: ```mermaid graph LR Power[Line Voltage] --> Common{Selector} Common -- Position 1 --> Load_A[Motor Speed 1] Common -- Position 2 --> OFF[System Idle] Common -- Position 3 --> Load_B[Motor Speed 2] ``` --- ### 4. Typical Applications * **Manual/Off/Auto Switches:** Used to override automated PLC systems. * **Security Access:** Since it requires a key, it prevents unauthorized personnel from starting or stopping critical machinery. * **Mode Selection:** Switching between different operating states of a CNC machine or conveyor belt.