ABB 265C047A05 Co-11 Overcurrent Relay 1-12A

ABB 265C047A05 CO-11 Overcurrent Relay 1-12A is a vintage CO-11 family protective relay designed for time-overcurrent protection in switchgear, using an induction-disk mechanism to trip when the pickup current is exceeded. The catalog number 265C047A05 identifies the standard CO-11 variant with a pickup range of 1–12 A, making it suitable for coordinating with associated protective devices to isolate faults while minimizing nuisance trips. This unit is commonly encountered in older Westinghouse/ABB protection schemes and is documented as a time-overcurrent relay used for protective coordination in industrial and utility equipment, with HiLo variants like 265C047A07 available for different coordination needs.