Abstract:
A drive shaft extension assembly is provided for an electrical switching apparatus which is removably disposed in a cassette. The electrical switching apparatus includes a levering assembly with a drive shaft. The drive shaft extension assembly includes a housing assembly, a shaft extension including an elongated body, and a racking gear. The shaft extension is structured to be coupled to the drive shaft in a fixed orientation, thereby increasing the width of the levering assembly.
Abstract:
Circuit breakers with a first bus energizing spring held in the housing that electrically connects the circuit board to an external electrical connection. The bus primary energizing spring is configured to deflect toward the circuit board with a first linear displacement. The circuit breakers also include a second bus energizing spring held in the housing that is configured to deflect toward the circuit board with a second linear displacement that supplements the first linear displacement.
Abstract:
A secondary disconnect assembly is for an electrical switching apparatus, such as a power circuit breaker. The secondary disconnect assembly includes a cradle assembly and a terminal block mount. The cradle assembly includes a cradle housing, an inner cradle movably disposed within the cradle housing, a number of retention members, and at least one stop member. The terminal block mount structured to receive a plurality of terminal blocks. The terminal block mount includes a number of protrusions each being removably coupled to the inner cradle. The retention members cooperate with the protrusions to retain the protrusions in a desired position with respect to the inner cradle. The at least one stop member cooperates with the inner cradle to correctly align the inner cradle with respect to the terminal block mount.
Abstract:
A trip unit wherein one sidewall of a trip unit housing assembly captivates a trip bar is provided. A captivation assembly is coupled, or directly coupled, to a trip unit housing assembly, thereby limiting tolerance buildup. The captivation assembly includes a trip bar bearing cap having a stop feature, thereby limiting tolerance buildup. The trip bar includes a radial stop paddle having hemispherical protrusions structured to contact the trip unit housing, thereby limiting tolerance buildup. The captivation assembly elements are incorporated into the trip unit housing assembly and captivates the trip bar in all but one axis, thereby limiting tolerance buildup and improving repeatability.
Abstract:
Circuit breakers with a first bus energizing spring held in the housing that electrically connects the circuit board to an external electrical connection. The bus primary energizing spring is configured to deflect toward the circuit board with a first linear displacement. The circuit breakers also include a second bus energizing spring held in the housing that is configured to deflect toward the circuit board with a second linear displacement that supplements the first linear displacement.
Abstract:
A trip unit wherein one sidewall of a trip unit housing assembly captivates a trip bar is provided. A captivation assembly is coupled, or directly coupled, to a trip unit housing assembly, thereby limiting tolerance buildup. The captivation assembly includes a trip bar bearing cap having a stop feature, thereby limiting tolerance buildup. The trip bar includes a radial stop paddle having hemispherical protrusions structured to contact the trip unit housing, thereby limiting tolerance buildup. The captivation assembly elements are incorporated into the trip unit housing assembly and captivates the trip bar in all but one axis, thereby limiting tolerance buildup and improving repeatability.
Abstract:
A drive shaft extension assembly is provided for an electrical switching apparatus which is removably disposed in a cassette. The electrical switching apparatus includes a levering assembly with a drive shaft. The drive shaft extension assembly includes a housing assembly, a shaft extension including an elongated body, and a racking gear. The shaft extension is structured to be coupled to the drive shaft in a fixed orientation, thereby increasing the width of the levering assembly.