Features 3 Position Self-Locking Design: Easily switch between three positions, providing versatile control over electrical circuits, enhancing operational efficiency. High-Quality Construction: Crafted from flame-retardant, high-temperature-resistant plastic, ensuring durability and safety in various environments. Superior Electric Conductivity: Equipped with silver alloy contacts for reliable and efficient electrical connections, minimizing the risk of malfunctions. Enhanced Insulation Performance: Offers excellent insulation for safe and secure operation, reducing the possibility of electrical hazards. Reliable and Long-Lasting: Delivers stable performance, high reliability, and extended lifespan, ensuring consistent functionality over time. Specification: Model: BEM38-20X/31 Rated Voltage: 440V Insulation Voltage (Ui): AC660V Working Current (Ith): 10A Function: Self-locking knob Contact Form: 2 groups of normally open type Mounting Hole Diameter: 22mm Rated Heating Current: 15A Contact Material: Silver alloy Contact Resistance: 50Ω Insulation Resistance: 50MΩ Mechanical Life: 5 million times Electrical Life: 500,000 times Product Size: Approx. 78x40x30mm / 3.1x1.6x1.2in Package List: 10 x Self-Locking Switch Package List