Based on the part number provided, this appears to be a specialized **Snap-in Pushbutton Switch**, likely from a manufacturer like *Highly Electric* or a similar industrial component supplier. The part number follows a modular configuration. Below is a breakdown of the electronic components and specifications associated with this part. ### 1. Component Breakdown | Code Segment | Meaning | Electronic/Physical Description | | :--- | :--- | :--- | | **MPB05** | Series Name | Miniature Pushbutton Switch, 5mm or specific series housing. | | **2C** | Circuitry | **DPDT (Double Pole Double Throw)**. This means the switch can control two separate circuits simultaneously. | | **33** | Terminal Type | **Right Angle PC Terminal**. Used for mounting the switch horizontally on a PCB. | | **R** | Cap Color | **Red**. Indicates the aesthetic color of the plastic actuator cap. | | **CAP** | Accessory | Indicates that the unit includes a standard plastic cap. | | **R** | Actuator | Indicates a Round shaped actuator or a specific reset behavior. | | **D** | Contact Material | **Gold over Silver**. Typically used to ensure low contact resistance and prevent oxidation. | --- ### 2. Electrical Specifications These switches are generally designed for low-power signal switching rather than high-voltage power applications. * **Contact Rating:** Typically 0.4 VA max @ 20V AC/DC (Gold contacts) or 1A @ 125V AC (Silver contacts). * **Insulation Resistance:** 1,000 MΩ minimum at 500V DC. * **Dielectric Strength:** 1,000 V RMS @ sea level. * **Operating Temperature:** Generally rated from -30°C to +85°C. ### 3. Physical Features * **Mounting:** Through-hole PCB mounting with a right-angle orientation. * **Feedback:** Momentary (non-locking) or Latching, depending on the internal spring mechanism (usually momentary for the MPB series). * **Durability:** Rated for approximately 50,000 make-and-break cycles at full load. --- ### 4. Application Logic (DPDT) Because this is a **2C (DPDT)** switch, the internal electrical logic works as follows: ```text Common 1 (C1) Common 2 (C2) / \ / \ NC1 (1) NO1 (2) NC2 (3) NO2 (4) ``` * **NC:** Normally Closed (connected to Common when the button is NOT pressed). * **NO:** Normally Open (connects to Common when the button IS pressed). ---