The ABB 9T10A1005G03 Guard I Noise Isolation Transformer is engineered to deliver superior noise attenuation, effectively reducing common mode noise caused by electromagnetic interference, radio interference, and ground loops. This is achieved through a robust copper shielding between the primary and secondary coil windings, which minimizes capacitive noise coupling that can disrupt electrical systems. With a capacity of 3A and 112.5Kva, this transformer operates at 480-208Y and a temperature rise of 150C. It is UL Listed and UL Energy Verified, ensuring compliance with stringent safety and efficiency standards. Additionally, it meets the seismic qualifications of IEEE-693-2005, IBC-2021, and CBC 2022, making it a reliable choice for environments prone to seismic activity. Available with either aluminum or copper windings, and in low audible noise varieties, the Guard I transformer is designed to meet diverse operational needs while maintaining optimal performance.