UL 891 listed and engineered for critical power applications, this bypass/isolation ATS features draw-out insulated-case switches for both the ATS and bypass paths. Available from 800A to 4000A in 3- or 4-pole configurations, it supports up to 480VAC and includes optional overcurrent protection. Choose from NEMA 1 or NEMA 3R enclosures to meet indoor or outdoor requirements, ensuring safe maintenance and uninterrupted operation.