General Electric RT3F140-190A Thermal Overload Relay is a 3-pole device in GE's RT3F series, rated for 140–190 A with Class 10 thermal trip characteristics. The RT3F140-190A model specifies the amperage range within GE's RT3F family of thermal overload relays. This relay's Class 10 rating denotes its thermal performance in overload protection within the 140–190 A range.
