Siemens OM-0562009-2X-0066 Circuit Breaker Trip Unit

Siemens OM-0562009-2X-0066 Circuit Breaker Trip Unit is a 400 A, three-pole unit designed to provide precise overcurrent protection for Siemens three-phase molded-case breakers. As an OEM Siemens component, it is intended for retrofit or replacement to restore original protection performance in compatible Siemens equipment used in industrial, commercial, and utility power distributions. The item is listed under model OM-0562009-2X-0066 with the SKU OM05620092X0066-UA-YAG and is described in the supplier's listing as a used Siemens trip unit; this status can affect availability and pricing. This trip unit is specifically built to work with Siemens low-voltage protection schemes and is suitable for applications where reliable overload and short-circuit protection is required across three-phase systems up to 400 A. By maintaining proper coordination with the associated breaker frame, this unit helps preserve trip settings and protection characteristics that Siemens equipment engineers designed for industrial facilities.