Enclosed Devices are designed for reliability and safety. Indoor NEMA type 1 and outdoor NEMA type 3R options are available. Enclosed Devices provide an easy installation for residential and commercial air conditioning systems and other single phase applications. Metallic and non-metallic enclosure options are available as well. This enclosed circuit breaker is 2 pole and 150A. It is rated at 240VAC and NEMA 3R. This system includs a QDL22200 breaker. This product complies to UL & CSA standards.