ABB Transfer Switches HCAI Special Seismic Certification Preapproval Application (OSP-0035)

This document is a formal application (OSP-0035) submitted by ABB Inc. for HCAI Special Seismic Certification Preapproval of automatic and bypass transfer switches used in emergency and standby power systems. It includes manufacturer and applicant details, certification methods (ICC-ES AC156, IEEE 344, IEEE 693, NEBS 3), seismic parameters (SDS = 2.0g, Fp/Wp = 2.5, ap = 2.0, Rp = 6.0, Ω0 = 2.0, Ip = 1.5, z/h = 1), and approval conditions valid through February 4, 2028.