High-quality and Durable: Featuring a 4-pin configuration and emergency stop functionality, this main switch circuit breaker is marked with clear "0" and "I" positions for easy operation. Designed for reliability, it serves effectively as both a primary and a repair switch in various settings. Robust Environmental Protection: Encased in a sturdy polycarbonate housing, this switch offers superior protection against dust and water with ratings up to IP67. Its rotary design ensures longevity even in the most challenging conditions, making it ideal for industrial use. Superior Temperature Resistance: With a functional range from -25 to +70, this main switch guarantees consistent performance under varying temperatures, ensuring safety and stability in diverse environments. Optimized for Harsh Conditions: The robust housing of this main switch is specifically designed to withstand harsh environments. Offering excellent protection against water and dust, it is an ideal choice for outdoor applications in demanding settings. Versatile Applications: Primarily used as a main switch for HVAC systems, water pumps, and solar energy setups, this circuit breaker can also control AC motors with small capacities. Its versatility makes it suitable for a wide range of industrial and commercial applications. Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:As Shown Material:Plastic Package Contents: 1 * Isolator Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.