Circuit breaker contact assembly

A primary disconnect assembly for a circuit breaker comprising: a terminal member defining a first side including a first depression and a second side including a second depression, wherein each depression opens away from the terminal member and each depression includes an arcuate contact surface having a first radius; at least two contact fingers each defining a contact portion having an arcuate contact surface having a second radius, wherein the second radii are greater than the first radii and the contact portions are adapted to engage the depressions of the terminal member such that at least two contact locations are present between each contact portion and the terminal member, and the terminal member is situated between the contact portions; means for holding the contact portions in engagement with the depressions of the terminal member, the contact portions being disposed within the depressions when the assembly is in a normal operating position; and means for coupling the contact fingers to the circuit breaker.

A primary disconnect assembly for a circuit breaker comprising: a terminal member defining a first side including a first depression and a second side including a second depression, wherein each depression opens away from the terminal member and each depression includes a generally circular shaped surface with a first radius; at least two contact fingers each defining a contact portion, wherein each contact portion includes a substantially circular shaped contact surface having a second radius which is larger than the first radius, the contact portions being adapted to engage the depressions of the terminal member such that at least two contact locations are present between each contact portion and the terminal member, the terminal member being situated between the contact portions; means for holding the contact portions in engagement with the depressions of the terminal member, the contact portions being disposed within the depressions when the assembly is in a normal operating position; and means for coupling the contact fingers to the circuit breaker.

A primary disconnect assembly for a circuit breaker comprising: a terminal member defining a first side including a first depression and a second side including a second depression, wherein each depression opens away from the terminal member and each depression includes a first substantially flat surface and a second substantially flat surface; at least two contact fingers each defining a contact portion, wherein each contact portion includes a substantially semi-circular contact surface, the contact portions being adapted to engage the depressions of the terminal member such that at least two contact locations are present between each contact portion and the terminal member, and the terminal member is situated between the contact portions; means for holding the contact portions in engagement with the depressions of the terminal member, the contact portions being disposed within the depressions when the assembly is in a normal operating position; and means for coupling the contact fingers to the circuit breaker.