The **MB2461E1A01** is a specific part number for a miniature pushbutton switch manufactured by **NKK Switches**. It belongs to the **MB2400 Series**, which is known for its high-reliability snap-action mechanism. --- ## 1. Technical Specifications The following table highlights the primary electrical and mechanical characteristics of this component: | Feature | Specification | | :--- | :--- | | **Circuit Configuration** | DPDT (Double Pole Double Throw) | | **Switch Function** | ON-(ON) / Momentary (Spring Return) | | **Current Rating** | 3A @ 125V AC | | **Contact Material** | Silver (Standard) | | **Actuator Type** | 3.3mm Diameter Plunger | | **Bushing Type** | 6.35mm (1/4") Threaded | | **Terminal Type** | Solder Lug | | **Operating Force** | 4.41 N (Newton) | --- ## 2. Key Internal Components ### Snap-Action Mechanism The core of this switch is a snap-action mechanism. Unlike standard pushbuttons, this ensures that the transition between contacts is rapid and crisp, regardless of the speed at which the plunger is pressed. This reduces arcing and extends the electrical life of the switch. ### Terminal Sealing The "E1" in the part number often indicates a specific epoxy seal at the base of the terminals. This prevents flux, solvents, or other contaminants from entering the switch housing during the soldering process. ### Contact Material The use of silver contacts in this model makes it ideal for power-level applications (up to 3A). However, it is important to note that silver contacts are not recommended for low-level (logic) circuits unless specifically gold-plated, as they require a minimum current to "wipe" oxide layers. --- ## 3. Applications The MB2461E1A01 is commonly found in: * **Industrial Control Panels:** Due to its rugged construction and tactile feedback. * **Communication Equipment:** Used for reset or momentary signaling. * **Medical Instrumentation:** Where high reliability and DPDT (dual circuit control) are required. * **Test & Measurement Devices:** Providing precise manual input. ---