This circuit breaker is designed to fit Cummins engines K19, K38, and NT855 QSK. It is a reliable and efficient piece of electrical equipment that is perfect for business and industrial applications. With its high-quality construction and advanced features, it provides superior protection against short circuits and overloads. Whether you're looking to upgrade your circuit breaker or seeking a replacement part, this circuit breaker is an excellent choice. It is compatible with a wide range of electrical equipment and supplies, and its durable design ensures long-lasting performance. Contact us today to learn more about this circuit breaker and how it can benefit your business or industrial equipment.