An opening switch and a remote circuit breaker are provided. The opening switch includes a base, and an energy storage assembly (100) and a lock catch assembly (200) that are disposed on the base; the energy storage assembly (100) is disposed on an inner wall of the base, one end of the lock catch assembly (200) is hinged to the base, a lock catch protrusion (210) is disposed on the lock catch assembly (200), and the lock catch protrusion (210) includes a barrier wall (211); and when the barrier wall (211) is configured to abut against an energy storage arm (140) of the energy storage assembly (100), under an action force of the energy storage arm (140), the lock catch assembly (200) has a rotation tendency, so that the energy storage assembly (100) maintains an energy storage state.

An actuator is allowed to move toward +A direction and toward −A direction. A movable contact engages with the actuator. A fixed contact touch the movable contact with electrical connection when the movable contact is located at an ON position, and are apart from the movable contact with electrical isolation when the movable contact is located at positions other than the ON position. An arc prevention mechanism prevents arc between the movable contact and the fixed contact.

A blocking member for an actuator having a movable arm for effecting a quick-make feature, includes for example, an elongated member having a first end and a second end, and wherein a portion of said elongated member being configured so that said blocking member disposed in a first position engages a portion of the movable arm of the actuator to restrain movement of the movable arm, and so that said blocking member disposed in a second position disengages from the portion of the movable arm of the actuator to permit movement of the movable arm.

A latch-free actuator includes, for example, a movable arm, a first biasing means operable to apply a force to move the movable arm in a first direction, and a yieldable support having a rigid configuration defining a generally straight axis and a flexible configuration defining a non-straight axis. The yieldable support is operable in the rigid configuration to support a compression force along the straight axis due to and countering the first biasing means so that the movable arm is prevented from movement in the first direction, and the yieldable support is operable, by applying a tripping force, to the yieldable support to transition the rigid configuration to the flexible configuration to withdraw support of the compression force and allow the movable arm to be moved by the first biasing means in the first direction.

A circuit breaker includes, for example, a housing, a stationary electrical contact attached to the housing, a movable arm operably movably attachable to the housing and a second end having an electrical contact releaseably contactable with the stationary electrical contact, and an actuator mechanism. The actuator mechanism includes a first biasing means for opening the electrical contacts, a second biasing means for closing the electrical contacts, and a yieldable support. The yieldable support is operable in a rigid configuration to support a compression force to prevent opening of the electrical contacts while the second biasing means is operable to apply the force to close the electrical contacts. The yieldable support is operable, by applying a tripping force, to transition the rigid configuration to the flexible configuration to withdraw support of the compression force and allow opening of the electrical contacts.

A switchgear includes a movable part capable of reciprocating movement, a movable contact coupled to the movable part and capable of reciprocating movement relative to the movable part, a biasing member that biases the movable contact, a latch capable of switching between a first state in which movement of the movable contact in the first direction is restricted and a second state in which movement of the movable contact in the first direction is permitted, and a fixed contact provided on a side of the first direction with respect to the movable contact. When the movable part and the movable contact move in a first direction, after movement for a predetermined distance, the movement of the movable contact is restricted by the latch in the first state, and then, when the movable part has moved further in the first direction, the latch is switched to the second state.

A blocking member for an actuator having a movable arm for effecting a quick-make feature, includes, for example, an elongated member having a first end and a second end, wherein a portion of the elongated member is configured so that the blocking member disposed in a first position engages a portion of the movable arm of the actuator to restrain movement of the movable arm and so that the blocking member disposed in a second position disengages from the portion of the movable arm of the actuator to permit movement of the movable arm.

A switchgear includes a movable part capable of reciprocating movement, a movable contact coupled to the movable part and capable of reciprocating movement relative to the movable part, a biasing member that biases the movable contact, a latch capable of switching between a first state in which movement of the movable contact in the first direction is restricted and a second state in which movement of the movable contact in the first direction is permitted, and a fixed contact provided on a side of the first direction with respect to the movable contact. When the movable part and the movable contact move in a first direction, after movement for a predetermined distance, the movement of the movable contact is restricted by the latch in the first state, and then, when the movable part has moved further in the first direction, the latch is switched to the second state.

A blocking member for an actuator having a movable arm for effecting a quick-make feature, includes, for example, an elongated member having a first end and a second end, wherein a portion of the elongated member is configured so that the blocking member disposed in a first position engages a portion of the movable arm of the actuator to restrain movement of the movable arm and so that the blocking member disposed in a second position disengages from the portion of the movable arm of the actuator to permit movement of the movable arm.

A blocking member for an actuator having a movable arm for effecting a quick-make feature, includes for example, an elongated member having a first end and a second end, and wherein a portion of said elongated member being configured so that said blocking member disposed in a first position engages a portion of the movable arm of the actuator to restrain movement of the movable arm, and so that said blocking member disposed in a second position disengages from the portion of the movable arm of the actuator to permit movement of the movable arm.