The LITTELFUSE 300:5 CT/2 IN. WINDOW/ DONUT is a current transformer designed for precise measurement in electrical systems. This model features a 300:5 ratio, making it ideal for monitoring high current applications. Constructed with durable materials, it ensures reliability and longevity. The 2-inch window allows for easy installation around existing conductors. This transformer complies with industry standards, ensuring compatibility with various systems. It is suitable for use in power monitoring, protection, and control applications, providing accurate readings for enhanced safety and efficiency.