The **M2PV-C22-R2/N** belongs to the **M22 series** of industrial pushbuttons and control units manufactured by **Eaton (Moeller)**. This specific part number represents a modular assembly, typically a **22mm Emergency Stop (E-Stop) / Mushroom Head operator**. --- ### 1. Breakdown of the Model Number The nomenclature describes the physical and electronic characteristics of the unit: | Component | Code | Description | | :--- | :--- | :--- | | **Series** | M22 | Modular 22.5 mm industrial control circuit devices. | | **Type** | PV | Emergency Stop (E-Stop) / Pull-to-release mushroom head. | | **Size** | C22 | Compact series (all-in-one design or specific housing). | | **Contacts** | R2 | Refers to the contact configuration (likely 2 NC - Normally Closed). | | **Special** | N | Often denotes specific labeling or a North American market variant. | --- ### 2. Core Electronic Components While these are mechanical interfaces, their "electronic" function is defined by their switching behavior and electrical ratings: #### A. Contact Blocks (The Switching Element) The internal contacts are the bridge between the physical button and the machine's control circuit. * **NC (Normally Closed):** Designed for safety circuits. Pressing the button breaks the circuit to stop the machinery. * **Positive Opening Operation:** The contacts are forced open mechanically, ensuring that even if the contacts weld, the force of pressing the button will break the connection (IEC/EN 60947-5-1). #### B. Electrical Ratings These parts are designed for low-voltage control circuits rather than powering heavy motors directly. | Parameter | Typical Value | | :--- | :--- | | **Rated Operational Voltage (Ue)** | 230V AC / 24V DC | | **Rated Operational Current (Ie)** | 4A (AC-15) / 3A (DC-13) | | **Contact Resistance** | < 50 mΩ | | **Mechanical Lifespan** | > 100,000 operations | --- ### 3. Physical & Environmental Specifications The "electronic" reliability is protected by its robust housing: * **Ingress Protection:** Usually **IP66, IP67, or IP69K**, making it resistant to high-pressure washdowns and dust. * **Mounting:** Standard **22.5 mm** hole diameter. * **Termination:** Usually features screw terminals or "Cage Clamp" technology for vibration-proof wire connections. --- ### 4. Schematic Representation The electronic logic for a typical "R2" (2NC) configuration is as follows: ```text L+ (24V) | +----|----+ | [ 11 ] | <-- Terminal 1 (NC Contact 1) | | | | [ 12 ] | <-- Terminal 2 (NC Contact 1) +----|----+ | +----|----+ | [ 21 ] | <-- Terminal 3 (NC Contact 2) | | | | [ 22 ] | <-- Terminal 4 (NC Contact 2) +----|----+ | Load/PLC Input ```