Equipment category · HCAI/OSHPD OSP
Automatic Transfer Switches — OSP Preapprovals
All 27 HCAI/OSHPD Special Seismic Certification preapprovals issued for Automatic Transfer Switches. 16 active, 11 expired, across 12 manufacturers. Source data from HCAI · updated 2026-04-21.
Manufacturers with Automatic Transfer Switches OSPs
| OSP # | Manufacturer | Expires | |
|---|---|---|---|
| OSP-0005 | Russelectric | Expired | Details → |
| OSP-0029 | Cummins | Expired | Details → |
| OSP-0096 | Russelectric | Expired | Details → |
| OSP-0114 | Caterpillar | Expired | Details → |
| OSP-0172 | Caterpillar | Expired | Details → |
| OSP-0193 | MTU | Expired | Details → |
| OSP-0331 | ABB | Expired | Details → |
| OSP-0466 | On Power | Expired | Details → |
| OSP-0613 | ABB | Expired | Details → |
| OSP-0655 | Russelectric | Expired | Details → |
| OSP-0714 | Cummins | Expired | Details → |
About Automatic Transfer Switches OSP preapprovals
Listed records are sourced from the official HCAI OSP page. Always verify status, conditions, and expiration with HCAI before specifying a component. Need PE/SE stamped anchorage calculations for Automatic Transfer Switches on a California hospital project? Talk to a Panache engineer.