Industrial OD4 1200A 960-1920 S5 Circuit Breaker

Industrial OD4 1200A 960-1920 S5 Circuit Breaker is a direct-acting overload protection device designed for heavy-current industrial power distribution, capable of interrupting fault currents in demanding switchgear applications and providing robust, mechanical tripping action that does not rely on auxiliary components to operate. The model is identified as OD4 with a 1200 A rating and a specified operating window of 960 to 1920 A, and it incorporates an "S5" trip characteristic, a designation historically associated with long-time protection in BBC Brown Boveri/ITE equipment. Originally produced by BBC Brown Boveri (a brand that later became part of ABB), this unit reflects mid-to-late 20th-century industrial protection technology and is typically found in legacy distribution systems requiring high-current, direct-acting interruption; it is often encountered in vintage catalogs and field-retrofit contexts. Because form factors and terminal configurations vary across OD4 units, verify mounting footprint and lug sizing when integrating into an existing panel.