Equipment category · HCAI/OSHPD OSP

Manual Transfer Switches — OSP Preapprovals

All 3 HCAI/OSHPD Special Seismic Certification preapprovals issued for Manual Transfer Switches. 1 active, 2 expired, across 3 manufacturers. Source data from HCAI · updated 2026-04-21.

Filter:All Active only Expired only

Manufacturers with Manual Transfer Switches OSPs

APC
Cummins
ESL Power Systems

OSP #	Manufacturer	Expires
OSP-0030	Cummins	Expired	Details →
OSP-0262	APC	Expired	Details →
OSP-0582	ESL Power Systems	2/28/2030	Details →

About Manual 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 Manual Transfer Switches on a California hospital project? Talk to a Panache engineer.

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