Model GCQ4 4P1250A Automatic Transfer Switch Key benefits Ensures fast, reliable switching between utility power and standby sources to minimize interruption and reduce downtime. Isolated PClevel design provides clear electrical separation during transfer operations. capacity 4P1250A rating supports heavy duty distribution loads common in commercial and industrial settings. Improves conversion rates for smoother transitions between power supplies, increasing operational continuity. Core functions and attributes Function: Automatic transfer between primary power and generator or alternate firefighting power supply, with isolated PClevel switching. Capacity: Four poles, 1250 ampere rating (4P1250A), suitable for threephase systems with neutral switching where required. Compatibility: Designed for use with onsite generators, dual power firefighting supplies, and electrical distribution panels that require a 4P1250A transfer device. Performance: Engineered to support frequent transfers and maintain consistent operation under typical commercial and industrial load conditions. Construction: Built for robust service in electrical distribution environments; mounting and footprint match standard transfer switch installations. Why customers need this product Keeps critical systems running by automating source selection when utility power is lost or firefighting power is activated. Reduces manual intervention and the risk of human error during power transitions. Supports system designs that require isolation at the PC level to prevent unintended connections between sources. Practical applications Commercial buildings: Automatic backup power switching for elevators, lighting, HVAC, and essential services during utility outages. Firefighting systems: Reliable dual power transfer to maintain fire pump and detection system operation when firefighting supply is engaged. Industrial and generator installations: Centralized transfer control for plant machinery and process equipment that require coordinated source switching. Operational notes Specify 4P1250A when matching to distribution panels and protective devices to ensure compatibility with system bus ratings and breaker configurations. Install and according to local electrical codes and the site control logic for generator start signals and firefighting power priorities. This GCQ4 4P1250A transfer switch is intended for professional electrical installations where dependable automatic source transfer and PClevel isolation are required.