A rotary switch includes a rotation movable portion, a movable conductor held in the rotation movable portion, a base portion, a power supply terminal held in the base portion, and a plurality of fixed contacts held in the base portion. The fixed contact and the power supply terminal are connected and disconnected via the movable conductor by a rotational operation of the rotation movable portion. The power supply terminal is disposed at a rotation center position of the rotation movable portion. The plurality of fixed contacts are disposed on a plurality of concentric circles having different diameter dimensions around the power supply terminal.

A switch has a base comprising a flat circular recess formed on an upper surface thereof, a fixed contact disposed in an inner surface of the flat circular recess, a spring body that has a bellows shape in which a reference form unit is repetitively formed, the spring body being annularly disposed in the flat circular recess of the base, an operating body that has a turning unit fitted turnably in the flat circular recess of the base, and an operating projection provided in an inward surface of the turning unit. When the operating body is turned, the operating projection presses an end portion of the spring body to compress the spring body, which allows a contact to be switched.

A switch has a base comprising a flat circular recess formed on an upper surface thereof, a fixed contact disposed in an inner surface of the flat circular recess, a spring body that has a bellows shape in which a reference form unit is repetitively formed, the spring body being annularly disposed in the flat circular recess of the base, an operating body that has a turning unit fitted turnably in the flat circular recess of the base, and an operating projection provided in an inward surface of the turning unit. When the operating body is turned, the operating projection presses an end portion of the spring body to compress the spring body, which allows a contact to be switched.

The present invention relates to an electric switch having a first contact element, an insulating element, and a second contact element. The first contact element includes a first contact surface on which the insulating element is disposed. The second contact element includes a conductive member moveable relative to the first contact element and the insulating element.

A switch assembly includes a switch unit including a button and an arm extending from the button along a height direction, the arm including first and second contact portions spaced apart from each other along a longitudinal direction; and a slider unit extending along a width direction and including a nose to contact the first and second contact portions respectively at first and second engagement positions. The switch assembly provides a reduced need for space and enhanced friendliness in touch and feel.

A switch assembly and method of operation comprises a housing having top and bottom ends spaced about a longitudinal axis and a selectively movable knob coupled to a plunger arrangement having a shaft that extends from inside the housing to couple to the knob. The switch assembly also comprises a printed circuit board having at least one wiper for engaging a contact extending from the plunger arrangement. A step shaft projects from the shaft of the plunger arrangement such that when a maintained mode of operation is desired by the switch assembly, the step shaft engages a retaining assembly formed by a portion of the housing, and when a momentary mode of operation is desired by the switch assembly the step shaft is positioned such that is free from engaging the retaining assembly.

A rotary switch device includes a fixed contact point part and a movable contact point part. The movable contact point part is rotated on the fixed contact point part so as to connect and disconnect the fixed contact point part and the movable contact point part. The fixed contact point part and the movable contact point part have contact surfaces which are band shapes and to which corrosion-resistant conductive processing is applied. A transient contact region, in which a contact point is moved from one end portion to the other end portion in a predetermined connection-operation angle from a contact start point with respect to the other of the fixed contact point part and the movable contact point part, is provided on each of the contact surfaces.

A UPS system and mechanical switching arrangement therefor that is driven by an electromechanical actuator when a fault condition is detected thereby opening or closing a switch of the switching arrangement in response thereto within 8 milliseconds, preferably within 4 milliseconds, and more preferably within 2 milliseconds of a fault condition being detected. The UPS system has one switching arrangement for controlling current flow through a utility power path that is switched by an electromechanical actuator and another switching arrangement for controlling that is switched by an electromechanical actuator through an inverter power path that supplies an output-connected load with electrical power should a fault condition occur. The switching arrangements can be driven by a common electromechanical actuator or independent driven by separate electromechanical actuators enabling programmability of a plurality of different UPS system operating modes.

An electrical switching device including at least a nominal contact arrangement, the nominal contact arrangement at least a first nominal contact with a plurality of nominal contact fingers forming a finger cage concentric with respect to a longitudinal axis (z), and at least a mating second nominal contact. An arcing contact arrangement including a first arcing contact and a mating second arcing contact. An arcing contact finger including at its free end a first impact area in which a first contacting to the second arcing contact occurs when closing, the electrical switching device. The first impact area is formed by a first planar surface arranged at an inclination angle () larger than zero degrees with respect to the longitudinal axis (z).

An electrical switching device including at least a nominal contact arrangement, the nominal contact arrangement at least a first nominal contact with a plurality of nominal contact fingers forming a finger cage concentric with respect to a longitudinal axis (z), and at least a mating second nominal contact. An arcing contact arrangement including a first arcing contact and a mating second arcing contact. An arcing contact finger including at its free end a first impact area in which a first contacting to the second arcing contact occurs when closing, the electrical switching device. The first impact area is formed by a first planar surface arranged at an inclination angle () larger than zero degrees with respect to the longitudinal axis (z).